| /* |
| * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) |
| * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| #include <pjsip/sip_transport.h> |
| #include <pjsip/sip_endpoint.h> |
| #include <pjsip/sip_parser.h> |
| #include <pjsip/sip_msg.h> |
| #include <pjsip/sip_private.h> |
| #include <pjsip/sip_errno.h> |
| #include <pjsip/sip_module.h> |
| #include <pj/addr_resolv.h> |
| #include <pj/except.h> |
| #include <pj/os.h> |
| #include <pj/log.h> |
| #include <pj/ioqueue.h> |
| #include <pj/hash.h> |
| #include <pj/string.h> |
| #include <pj/pool.h> |
| #include <pj/assert.h> |
| #include <pj/lock.h> |
| #include <pj/list.h> |
| |
| |
| #define THIS_FILE "sip_transport.c" |
| |
| #if 0 |
| # define TRACE_(x) PJ_LOG(5,x) |
| |
| static const char *addr_string(const pj_sockaddr_t *addr) |
| { |
| static char str[PJ_INET6_ADDRSTRLEN]; |
| pj_inet_ntop(((const pj_sockaddr*)addr)->addr.sa_family, |
| pj_sockaddr_get_addr(addr), |
| str, sizeof(str)); |
| return str; |
| } |
| static const char* print_tpsel_info(const pjsip_tpselector *sel) |
| { |
| static char tpsel_info_buf[80]; |
| if (!sel) return "(null)"; |
| if (sel->type==PJSIP_TPSELECTOR_LISTENER) |
| pj_ansi_snprintf(tpsel_info_buf, sizeof(tpsel_info_buf), |
| "listener[%s], reuse=%d", sel->u.listener->obj_name, |
| !sel->disable_connection_reuse); |
| else if (sel->type==PJSIP_TPSELECTOR_TRANSPORT) |
| pj_ansi_snprintf(tpsel_info_buf, sizeof(tpsel_info_buf), |
| "transport[%s], reuse=%d", sel->u.transport->info, |
| !sel->disable_connection_reuse); |
| else |
| pj_ansi_snprintf(tpsel_info_buf, sizeof(tpsel_info_buf), |
| "unknown[%p], reuse=%d", sel->u.ptr, |
| !sel->disable_connection_reuse); |
| return tpsel_info_buf; |
| } |
| #else |
| # define TRACE_(x) |
| #endif |
| |
| /* Specify the initial size of the transport manager's pool. */ |
| #ifndef TPMGR_POOL_INIT_SIZE |
| # define TPMGR_POOL_INIT_SIZE 64 |
| #endif |
| |
| /* Specify the increment size of the transport manager's pool. */ |
| #ifndef TPMGR_POOL_INC_SIZE |
| #define TPMGR_POOL_INC_SIZE 64 |
| #endif |
| |
| /* Specify transport entry allocation count. When registering a new transport, |
| * a new entry will be picked from a free list. This setting will determine |
| * the size of the free list size. If all entry is used, then the same number |
| * of entry will be allocated. |
| */ |
| #ifndef PJSIP_TRANSPORT_ENTRY_ALLOC_CNT |
| # define PJSIP_TRANSPORT_ENTRY_ALLOC_CNT 16 |
| #endif |
| |
| /* Prototype. */ |
| static pj_status_t mod_on_tx_msg(pjsip_tx_data *tdata); |
| |
| /* This module has sole purpose to print transmit data to contigous buffer |
| * before actually transmitted to the wire. |
| */ |
| static pjsip_module mod_msg_print = |
| { |
| NULL, NULL, /* prev and next */ |
| { "mod-msg-print", 13}, /* Name. */ |
| -1, /* Id */ |
| PJSIP_MOD_PRIORITY_TRANSPORT_LAYER, /* Priority */ |
| NULL, /* load() */ |
| NULL, /* start() */ |
| NULL, /* stop() */ |
| NULL, /* unload() */ |
| NULL, /* on_rx_request() */ |
| NULL, /* on_rx_response() */ |
| &mod_on_tx_msg, /* on_tx_request() */ |
| &mod_on_tx_msg, /* on_tx_response() */ |
| NULL, /* on_tsx_state() */ |
| }; |
| |
| /* Transport list item */ |
| typedef struct transport |
| { |
| PJ_DECL_LIST_MEMBER(struct transport); |
| pj_hash_entry_buf tp_buf; |
| pjsip_transport *tp; |
| } transport; |
| |
| /* |
| * Transport manager. |
| */ |
| struct pjsip_tpmgr |
| { |
| pj_hash_table_t *table; |
| pj_lock_t *lock; |
| pjsip_endpoint *endpt; |
| pjsip_tpfactory factory_list; |
| pj_pool_t *pool; |
| #if defined(PJ_DEBUG) && PJ_DEBUG!=0 |
| pj_atomic_t *tdata_counter; |
| #endif |
| void (*on_rx_msg)(pjsip_endpoint*, pj_status_t, pjsip_rx_data*); |
| pj_status_t (*on_tx_msg)(pjsip_endpoint*, pjsip_tx_data*); |
| pjsip_tp_state_callback tp_state_cb; |
| pjsip_tp_on_rx_dropped_cb tp_drop_data_cb; |
| |
| /* Transmit data list, for transmit data cleanup when transport manager |
| * is destroyed. |
| */ |
| pjsip_tx_data tdata_list; |
| |
| /* List of free transport entry. */ |
| transport tp_entry_freelist; |
| }; |
| |
| |
| /* Transport state listener list type */ |
| typedef struct tp_state_listener |
| { |
| PJ_DECL_LIST_MEMBER(struct tp_state_listener); |
| |
| pjsip_tp_state_callback cb; |
| void *user_data; |
| } tp_state_listener; |
| |
| |
| /* |
| * Transport data. |
| */ |
| typedef struct transport_data |
| { |
| /* Transport listeners */ |
| tp_state_listener st_listeners; |
| tp_state_listener st_listeners_empty; |
| } transport_data; |
| |
| |
| /***************************************************************************** |
| * |
| * GENERAL TRANSPORT (NAMES, TYPES, ETC.) |
| * |
| *****************************************************************************/ |
| |
| /* |
| * Transport names. |
| */ |
| static struct transport_names_t |
| { |
| pjsip_transport_type_e type; /* Transport type */ |
| pj_uint16_t port; /* Default port number */ |
| pj_str_t name; /* Id tag */ |
| const char *description; /* Longer description */ |
| unsigned flag; /* Flags */ |
| char name_buf[16]; /* For user's transport */ |
| } transport_names[16] = |
| { |
| { |
| PJSIP_TRANSPORT_UNSPECIFIED, |
| 0, |
| {"Unspecified", 11}, |
| "Unspecified", |
| 0 |
| }, |
| { |
| PJSIP_TRANSPORT_UDP, |
| 5060, |
| {"UDP", 3}, |
| "UDP transport", |
| PJSIP_TRANSPORT_DATAGRAM |
| }, |
| { |
| PJSIP_TRANSPORT_TCP, |
| 5060, |
| {"TCP", 3}, |
| "TCP transport", |
| PJSIP_TRANSPORT_RELIABLE |
| }, |
| { |
| PJSIP_TRANSPORT_TLS, |
| 5061, |
| {"TLS", 3}, |
| "TLS transport", |
| PJSIP_TRANSPORT_RELIABLE | PJSIP_TRANSPORT_SECURE |
| }, |
| { |
| PJSIP_TRANSPORT_DTLS, |
| 5061, |
| {"DTLS", 4}, |
| "DTLS transport", |
| PJSIP_TRANSPORT_SECURE |
| }, |
| { |
| PJSIP_TRANSPORT_SCTP, |
| 5060, |
| {"SCTP", 4}, |
| "SCTP transport", |
| PJSIP_TRANSPORT_RELIABLE |
| }, |
| { |
| PJSIP_TRANSPORT_LOOP, |
| 15060, |
| {"LOOP", 4}, |
| "Loopback transport", |
| PJSIP_TRANSPORT_RELIABLE |
| }, |
| { |
| PJSIP_TRANSPORT_LOOP_DGRAM, |
| 15060, |
| {"LOOP-DGRAM", 10}, |
| "Loopback datagram transport", |
| PJSIP_TRANSPORT_DATAGRAM |
| }, |
| { |
| PJSIP_TRANSPORT_UDP6, |
| 5060, |
| {"UDP", 3}, |
| "UDP IPv6 transport", |
| PJSIP_TRANSPORT_DATAGRAM |
| }, |
| { |
| PJSIP_TRANSPORT_TCP6, |
| 5060, |
| {"TCP", 3}, |
| "TCP IPv6 transport", |
| PJSIP_TRANSPORT_RELIABLE |
| }, |
| { |
| PJSIP_TRANSPORT_TLS6, |
| 5061, |
| {"TLS", 3}, |
| "TLS IPv6 transport", |
| PJSIP_TRANSPORT_RELIABLE | PJSIP_TRANSPORT_SECURE |
| }, |
| { |
| PJSIP_TRANSPORT_DTLS6, |
| 5061, |
| {"DTLS", 4}, |
| "DTLS IPv6 transport", |
| PJSIP_TRANSPORT_SECURE |
| }, |
| }; |
| |
| static void tp_state_callback(pjsip_transport *tp, |
| pjsip_transport_state state, |
| const pjsip_transport_state_info *info); |
| |
| |
| static struct transport_names_t *get_tpname(pjsip_transport_type_e type) |
| { |
| unsigned i; |
| for (i=0; i<PJ_ARRAY_SIZE(transport_names); ++i) { |
| if (transport_names[i].type == type) |
| return &transport_names[i]; |
| } |
| pj_assert(!"Invalid transport type!"); |
| return NULL; |
| } |
| |
| |
| |
| /* |
| * Register new transport type to PJSIP. |
| */ |
| PJ_DEF(pj_status_t) pjsip_transport_register_type( unsigned tp_flag, |
| const char *tp_name, |
| int def_port, |
| int *p_tp_type) |
| { |
| unsigned i; |
| pjsip_transport_type_e parent = 0; |
| |
| PJ_ASSERT_RETURN(tp_flag && tp_name && def_port, PJ_EINVAL); |
| PJ_ASSERT_RETURN(pj_ansi_strlen(tp_name) < |
| PJ_ARRAY_SIZE(transport_names[0].name_buf), |
| PJ_ENAMETOOLONG); |
| |
| for (i=1; i<PJ_ARRAY_SIZE(transport_names); ++i) { |
| if (tp_flag & PJSIP_TRANSPORT_IPV6 && |
| pj_stricmp2(&transport_names[i].name, tp_name) == 0) |
| { |
| parent = transport_names[i].type; |
| } |
| if (transport_names[i].type == 0) |
| break; |
| } |
| |
| if (i == PJ_ARRAY_SIZE(transport_names)) |
| return PJ_ETOOMANY; |
| |
| if (tp_flag & PJSIP_TRANSPORT_IPV6 && parent) { |
| transport_names[i].type = parent | PJSIP_TRANSPORT_IPV6; |
| } else { |
| transport_names[i].type = (pjsip_transport_type_e)i; |
| } |
| |
| transport_names[i].port = (pj_uint16_t)def_port; |
| pj_ansi_strcpy(transport_names[i].name_buf, tp_name); |
| transport_names[i].name = pj_str(transport_names[i].name_buf); |
| transport_names[i].flag = tp_flag; |
| |
| if (p_tp_type) |
| *p_tp_type = transport_names[i].type; |
| |
| return PJ_SUCCESS; |
| } |
| |
| |
| /* |
| * Get transport type from name. |
| */ |
| PJ_DEF(pjsip_transport_type_e) pjsip_transport_get_type_from_name(const pj_str_t *name) |
| { |
| unsigned i; |
| |
| if (name->slen == 0) |
| return PJSIP_TRANSPORT_UNSPECIFIED; |
| |
| /* Get transport type from name. */ |
| for (i=0; i<PJ_ARRAY_SIZE(transport_names); ++i) { |
| if (pj_stricmp(name, &transport_names[i].name) == 0) { |
| return transport_names[i].type; |
| } |
| } |
| |
| /* Just return instead of raising assertion. */ |
| //pj_assert(!"Invalid transport name"); |
| return PJSIP_TRANSPORT_UNSPECIFIED; |
| } |
| |
| |
| /* |
| * Get the transport type for the specified flags. |
| */ |
| PJ_DEF(pjsip_transport_type_e) pjsip_transport_get_type_from_flag(unsigned flag) |
| { |
| unsigned i; |
| |
| /* Get the transport type for the specified flags. */ |
| for (i=0; i<PJ_ARRAY_SIZE(transport_names); ++i) { |
| if (transport_names[i].flag == flag) { |
| return transport_names[i].type; |
| } |
| } |
| |
| pj_assert(!"Invalid transport type"); |
| return PJSIP_TRANSPORT_UNSPECIFIED; |
| } |
| |
| /* |
| * Get the socket address family of a given transport type. |
| */ |
| PJ_DEF(int) pjsip_transport_type_get_af(pjsip_transport_type_e type) |
| { |
| if (type & PJSIP_TRANSPORT_IPV6) |
| return pj_AF_INET6(); |
| else |
| return pj_AF_INET(); |
| } |
| |
| PJ_DEF(unsigned) pjsip_transport_get_flag_from_type(pjsip_transport_type_e type) |
| { |
| /* Return transport flag. */ |
| return get_tpname(type)->flag; |
| } |
| |
| /* |
| * Get the default SIP port number for the specified type. |
| */ |
| PJ_DEF(int) pjsip_transport_get_default_port_for_type(pjsip_transport_type_e type) |
| { |
| /* Return the port. */ |
| return get_tpname(type)->port; |
| } |
| |
| /* |
| * Get transport name. |
| */ |
| PJ_DEF(const char*) pjsip_transport_get_type_name(pjsip_transport_type_e type) |
| { |
| /* Return the name. */ |
| return get_tpname(type)->name.ptr; |
| } |
| |
| /* |
| * Get transport description. |
| */ |
| PJ_DEF(const char*) pjsip_transport_get_type_desc(pjsip_transport_type_e type) |
| { |
| /* Return the description. */ |
| return get_tpname(type)->description; |
| } |
| |
| |
| /***************************************************************************** |
| * |
| * TRANSPORT SELECTOR |
| * |
| *****************************************************************************/ |
| |
| /* |
| * Add transport/listener reference in the selector. |
| */ |
| PJ_DEF(void) pjsip_tpselector_add_ref(pjsip_tpselector *sel) |
| { |
| if (sel->type == PJSIP_TPSELECTOR_TRANSPORT && sel->u.transport != NULL) |
| pjsip_transport_add_ref(sel->u.transport); |
| else if (sel->type == PJSIP_TPSELECTOR_LISTENER && sel->u.listener != NULL) |
| ; /* Hmm.. looks like we don't have reference counter for listener */ |
| } |
| |
| |
| /* |
| * Decrement transport/listener reference in the selector. |
| */ |
| PJ_DEF(void) pjsip_tpselector_dec_ref(pjsip_tpselector *sel) |
| { |
| if (sel->type == PJSIP_TPSELECTOR_TRANSPORT && sel->u.transport != NULL) |
| pjsip_transport_dec_ref(sel->u.transport); |
| else if (sel->type == PJSIP_TPSELECTOR_LISTENER && sel->u.listener != NULL) |
| ; /* Hmm.. looks like we don't have reference counter for listener */ |
| } |
| |
| |
| /***************************************************************************** |
| * |
| * TRANSMIT DATA BUFFER MANIPULATION. |
| * |
| *****************************************************************************/ |
| |
| /* |
| * Create new transmit buffer. |
| */ |
| PJ_DEF(pj_status_t) pjsip_tx_data_create( pjsip_tpmgr *mgr, |
| pjsip_tx_data **p_tdata ) |
| { |
| pj_pool_t *pool; |
| pjsip_tx_data *tdata; |
| pj_status_t status; |
| |
| PJ_ASSERT_RETURN(mgr && p_tdata, PJ_EINVAL); |
| |
| pool = pjsip_endpt_create_pool( mgr->endpt, "tdta%p", |
| PJSIP_POOL_LEN_TDATA, |
| PJSIP_POOL_INC_TDATA ); |
| if (!pool) |
| return PJ_ENOMEM; |
| |
| tdata = PJ_POOL_ZALLOC_T(pool, pjsip_tx_data); |
| tdata->pool = pool; |
| tdata->mgr = mgr; |
| pj_ansi_snprintf(tdata->obj_name, sizeof(tdata->obj_name), "tdta%p", tdata); |
| pj_memcpy(pool->obj_name, tdata->obj_name, sizeof(pool->obj_name)); |
| |
| status = pj_atomic_create(tdata->pool, 0, &tdata->ref_cnt); |
| if (status != PJ_SUCCESS) { |
| pjsip_endpt_release_pool( mgr->endpt, tdata->pool ); |
| return status; |
| } |
| |
| //status = pj_lock_create_simple_mutex(pool, "tdta%p", &tdata->lock); |
| status = pj_lock_create_null_mutex(pool, "tdta%p", &tdata->lock); |
| if (status != PJ_SUCCESS) { |
| pjsip_endpt_release_pool( mgr->endpt, tdata->pool ); |
| return status; |
| } |
| |
| pj_ioqueue_op_key_init(&tdata->op_key.key, sizeof(tdata->op_key.key)); |
| pj_list_init(tdata); |
| |
| #if defined(PJSIP_HAS_TX_DATA_LIST) && PJSIP_HAS_TX_DATA_LIST!=0 |
| /* Append this just created tdata to transmit buffer list */ |
| pj_lock_acquire(mgr->lock); |
| pj_list_push_back(&mgr->tdata_list, tdata); |
| pj_lock_release(mgr->lock); |
| #endif |
| |
| #if defined(PJ_DEBUG) && PJ_DEBUG!=0 |
| pj_atomic_inc( tdata->mgr->tdata_counter ); |
| #endif |
| |
| *p_tdata = tdata; |
| return PJ_SUCCESS; |
| } |
| |
| |
| /* |
| * Add reference to tx buffer. |
| */ |
| PJ_DEF(void) pjsip_tx_data_add_ref( pjsip_tx_data *tdata ) |
| { |
| pj_atomic_inc(tdata->ref_cnt); |
| } |
| |
| static void tx_data_destroy(pjsip_tx_data *tdata) |
| { |
| PJ_LOG(5,(tdata->obj_name, "Destroying txdata %s", |
| pjsip_tx_data_get_info(tdata))); |
| pjsip_tpselector_dec_ref(&tdata->tp_sel); |
| #if defined(PJ_DEBUG) && PJ_DEBUG!=0 |
| pj_atomic_dec( tdata->mgr->tdata_counter ); |
| #endif |
| |
| #if defined(PJSIP_HAS_TX_DATA_LIST) && PJSIP_HAS_TX_DATA_LIST!=0 |
| /* Remove this tdata from transmit buffer list */ |
| pj_lock_acquire(tdata->mgr->lock); |
| pj_list_erase(tdata); |
| pj_lock_release(tdata->mgr->lock); |
| #endif |
| |
| pj_atomic_destroy( tdata->ref_cnt ); |
| pj_lock_destroy( tdata->lock ); |
| pjsip_endpt_release_pool( tdata->mgr->endpt, tdata->pool ); |
| } |
| |
| /* |
| * Decrease transport data reference, destroy it when the reference count |
| * reaches zero. |
| */ |
| PJ_DEF(pj_status_t) pjsip_tx_data_dec_ref( pjsip_tx_data *tdata ) |
| { |
| pj_atomic_value_t ref_cnt; |
| |
| PJ_ASSERT_RETURN(tdata && tdata->ref_cnt, PJ_EINVAL); |
| |
| ref_cnt = pj_atomic_dec_and_get(tdata->ref_cnt); |
| pj_assert( ref_cnt >= 0); |
| if (ref_cnt == 0) { |
| tx_data_destroy(tdata); |
| return PJSIP_EBUFDESTROYED; |
| } else { |
| return PJ_SUCCESS; |
| } |
| } |
| |
| /* |
| * Invalidate the content of the print buffer to force the message to be |
| * re-printed when sent. |
| */ |
| PJ_DEF(void) pjsip_tx_data_invalidate_msg( pjsip_tx_data *tdata ) |
| { |
| tdata->buf.cur = tdata->buf.start; |
| tdata->info = NULL; |
| } |
| |
| /* |
| * Print the SIP message to transmit data buffer's internal buffer. |
| */ |
| PJ_DEF(pj_status_t) pjsip_tx_data_encode(pjsip_tx_data *tdata) |
| { |
| /* Allocate buffer if necessary. */ |
| if (tdata->buf.start == NULL) { |
| PJ_USE_EXCEPTION; |
| |
| PJ_TRY { |
| tdata->buf.start = (char*) |
| pj_pool_alloc(tdata->pool, PJSIP_MAX_PKT_LEN); |
| } |
| PJ_CATCH_ANY { |
| return PJ_ENOMEM; |
| } |
| PJ_END |
| |
| tdata->buf.cur = tdata->buf.start; |
| tdata->buf.end = tdata->buf.start + PJSIP_MAX_PKT_LEN; |
| } |
| |
| /* Do we need to reprint? */ |
| if (!pjsip_tx_data_is_valid(tdata)) { |
| pj_ssize_t size; |
| |
| size = pjsip_msg_print( tdata->msg, tdata->buf.start, |
| tdata->buf.end - tdata->buf.start); |
| if (size < 0) { |
| return PJSIP_EMSGTOOLONG; |
| } |
| pj_assert(size != 0); |
| tdata->buf.cur[size] = '\0'; |
| tdata->buf.cur += size; |
| } |
| |
| return PJ_SUCCESS; |
| } |
| |
| PJ_DEF(pj_bool_t) pjsip_tx_data_is_valid( pjsip_tx_data *tdata ) |
| { |
| return tdata->buf.cur != tdata->buf.start; |
| } |
| |
| static char *get_msg_info(pj_pool_t *pool, const char *obj_name, |
| const pjsip_msg *msg) |
| { |
| char info_buf[128], *info; |
| const pjsip_cseq_hdr *cseq; |
| int len; |
| |
| cseq = (const pjsip_cseq_hdr*) pjsip_msg_find_hdr(msg, PJSIP_H_CSEQ, NULL); |
| PJ_ASSERT_RETURN(cseq != NULL, "INVALID MSG"); |
| |
| if (msg->type == PJSIP_REQUEST_MSG) { |
| len = pj_ansi_snprintf(info_buf, sizeof(info_buf), |
| "Request msg %.*s/cseq=%d (%s)", |
| (int)msg->line.req.method.name.slen, |
| msg->line.req.method.name.ptr, |
| cseq->cseq, obj_name); |
| } else { |
| len = pj_ansi_snprintf(info_buf, sizeof(info_buf), |
| "Response msg %d/%.*s/cseq=%d (%s)", |
| msg->line.status.code, |
| (int)cseq->method.name.slen, |
| cseq->method.name.ptr, |
| cseq->cseq, obj_name); |
| } |
| |
| if (len < 1 || len >= (int)sizeof(info_buf)) { |
| return (char*)obj_name; |
| } |
| |
| info = (char*) pj_pool_alloc(pool, len+1); |
| pj_memcpy(info, info_buf, len+1); |
| |
| return info; |
| } |
| |
| PJ_DEF(char*) pjsip_tx_data_get_info( pjsip_tx_data *tdata ) |
| { |
| PJ_ASSERT_RETURN(tdata, "NULL"); |
| |
| /* tdata->info may be assigned by application so if it exists |
| * just return it. |
| */ |
| if (tdata->info) |
| return tdata->info; |
| |
| if (tdata->msg==NULL) |
| return "NULL"; |
| |
| pj_lock_acquire(tdata->lock); |
| tdata->info = get_msg_info(tdata->pool, tdata->obj_name, tdata->msg); |
| pj_lock_release(tdata->lock); |
| |
| return tdata->info; |
| } |
| |
| PJ_DEF(pj_status_t) pjsip_tx_data_set_transport(pjsip_tx_data *tdata, |
| const pjsip_tpselector *sel) |
| { |
| PJ_ASSERT_RETURN(tdata && sel, PJ_EINVAL); |
| |
| pj_lock_acquire(tdata->lock); |
| |
| pjsip_tpselector_dec_ref(&tdata->tp_sel); |
| |
| pj_memcpy(&tdata->tp_sel, sel, sizeof(*sel)); |
| pjsip_tpselector_add_ref(&tdata->tp_sel); |
| |
| pj_lock_release(tdata->lock); |
| |
| return PJ_SUCCESS; |
| } |
| |
| /* Clone pjsip_tx_data. */ |
| PJ_DEF(pj_status_t) pjsip_tx_data_clone(const pjsip_tx_data *src, |
| unsigned flags, |
| pjsip_tx_data ** p_tdata) |
| { |
| pjsip_tx_data *dst; |
| const pjsip_hdr *hsrc; |
| pjsip_msg *msg; |
| pj_status_t status; |
| |
| PJ_UNUSED_ARG(flags); |
| |
| status = pjsip_tx_data_create(src->mgr, p_tdata); |
| if (status != PJ_SUCCESS) |
| return status; |
| |
| dst = *p_tdata; |
| |
| msg = pjsip_msg_create(dst->pool, PJSIP_RESPONSE_MSG); |
| dst->msg = msg; |
| pjsip_tx_data_add_ref(dst); |
| |
| /* Duplicate status line */ |
| msg->line.status.code = src->msg->line.status.code; |
| pj_strdup(dst->pool, &msg->line.status.reason, |
| &src->msg->line.status.reason); |
| |
| /* Duplicate all headers */ |
| hsrc = src->msg->hdr.next; |
| while (hsrc != &src->msg->hdr) { |
| pjsip_hdr *h = (pjsip_hdr*) pjsip_hdr_clone(dst->pool, hsrc); |
| pjsip_msg_add_hdr(msg, h); |
| hsrc = hsrc->next; |
| } |
| |
| /* Duplicate message body */ |
| if (src->msg->body) |
| msg->body = pjsip_msg_body_clone(dst->pool, src->msg->body); |
| |
| /* We shouldn't copy is_pending since it's src's internal state, |
| * indicating that it's currently being sent by the transport. |
| * While the cloned tdata is of course not. |
| */ |
| //dst->is_pending = src->is_pending; |
| |
| PJ_LOG(5,(THIS_FILE, |
| "Tx data %s cloned", |
| pjsip_tx_data_get_info(dst))); |
| |
| return PJ_SUCCESS; |
| } |
| |
| PJ_DEF(char*) pjsip_rx_data_get_info(pjsip_rx_data *rdata) |
| { |
| char obj_name[PJ_MAX_OBJ_NAME]; |
| |
| PJ_ASSERT_RETURN(rdata->msg_info.msg, "INVALID MSG"); |
| |
| if (rdata->msg_info.info) |
| return rdata->msg_info.info; |
| |
| pj_ansi_strcpy(obj_name, "rdata"); |
| pj_ansi_snprintf(obj_name+5, sizeof(obj_name)-5, "%p", rdata); |
| |
| rdata->msg_info.info = get_msg_info(rdata->tp_info.pool, obj_name, |
| rdata->msg_info.msg); |
| return rdata->msg_info.info; |
| } |
| |
| /* Clone pjsip_rx_data. */ |
| PJ_DEF(pj_status_t) pjsip_rx_data_clone( const pjsip_rx_data *src, |
| unsigned flags, |
| pjsip_rx_data **p_rdata) |
| { |
| pj_pool_t *pool; |
| pjsip_rx_data *dst; |
| pjsip_hdr *hdr; |
| |
| PJ_ASSERT_RETURN(src && flags==0 && p_rdata, PJ_EINVAL); |
| |
| pool = pj_pool_create(src->tp_info.pool->factory, |
| "rtd%p", |
| PJSIP_POOL_RDATA_LEN, |
| PJSIP_POOL_RDATA_INC, |
| NULL); |
| if (!pool) |
| return PJ_ENOMEM; |
| |
| dst = PJ_POOL_ZALLOC_T(pool, pjsip_rx_data); |
| |
| /* Parts of tp_info */ |
| dst->tp_info.pool = pool; |
| dst->tp_info.transport = (pjsip_transport*)src->tp_info.transport; |
| |
| /* pkt_info can be memcopied */ |
| pj_memcpy(&dst->pkt_info, &src->pkt_info, sizeof(src->pkt_info)); |
| |
| /* msg_info needs deep clone */ |
| dst->msg_info.msg_buf = dst->pkt_info.packet + |
| (src->msg_info.msg_buf - src->pkt_info.packet); |
| dst->msg_info.len = src->msg_info.len; |
| dst->msg_info.msg = pjsip_msg_clone(pool, src->msg_info.msg); |
| pj_list_init(&dst->msg_info.parse_err); |
| |
| #define GET_MSG_HDR2(TYPE, type, var) \ |
| case PJSIP_H_##TYPE: \ |
| if (!dst->msg_info.var) { \ |
| dst->msg_info.var = (pjsip_##type##_hdr*)hdr; \ |
| } \ |
| break |
| #define GET_MSG_HDR(TYPE, var_type) GET_MSG_HDR2(TYPE, var_type, var_type) |
| |
| hdr = dst->msg_info.msg->hdr.next; |
| while (hdr != &dst->msg_info.msg->hdr) { |
| switch (hdr->type) { |
| GET_MSG_HDR(CALL_ID, cid); |
| GET_MSG_HDR(FROM, from); |
| GET_MSG_HDR(TO, to); |
| GET_MSG_HDR(VIA, via); |
| GET_MSG_HDR(CSEQ, cseq); |
| GET_MSG_HDR(MAX_FORWARDS, max_fwd); |
| GET_MSG_HDR(ROUTE, route); |
| GET_MSG_HDR2(RECORD_ROUTE, rr, record_route); |
| GET_MSG_HDR(CONTENT_TYPE, ctype); |
| GET_MSG_HDR(CONTENT_LENGTH, clen); |
| GET_MSG_HDR(REQUIRE, require); |
| GET_MSG_HDR(SUPPORTED, supported); |
| default: |
| break; |
| } |
| hdr = hdr->next; |
| } |
| |
| #undef GET_MSG_HDR |
| #undef GET_MSG_HDR2 |
| |
| *p_rdata = dst; |
| |
| /* Finally add transport ref */ |
| return pjsip_transport_add_ref(dst->tp_info.transport); |
| } |
| |
| /* Free previously cloned pjsip_rx_data. */ |
| PJ_DEF(pj_status_t) pjsip_rx_data_free_cloned(pjsip_rx_data *rdata) |
| { |
| PJ_ASSERT_RETURN(rdata, PJ_EINVAL); |
| |
| pjsip_transport_dec_ref(rdata->tp_info.transport); |
| pj_pool_release(rdata->tp_info.pool); |
| |
| return PJ_SUCCESS; |
| } |
| |
| /***************************************************************************** |
| * |
| * TRANSPORT KEY |
| * |
| *****************************************************************************/ |
| |
| |
| /***************************************************************************** |
| * |
| * TRANSPORT |
| * |
| *****************************************************************************/ |
| |
| static void transport_send_callback(pjsip_transport *transport, |
| void *token, |
| pj_ssize_t size) |
| { |
| pjsip_tx_data *tdata = (pjsip_tx_data*) token; |
| |
| PJ_UNUSED_ARG(transport); |
| |
| /* Mark pending off so that app can resend/reuse txdata from inside |
| * the callback. |
| */ |
| tdata->is_pending = 0; |
| |
| /* Call callback, if any. */ |
| if (tdata->cb) { |
| (*tdata->cb)(tdata->token, tdata, size); |
| } |
| |
| /* Decrement reference count. */ |
| pjsip_tx_data_dec_ref(tdata); |
| } |
| |
| /* This function is called by endpoint for on_tx_request() and on_tx_response() |
| * notification. |
| */ |
| static pj_status_t mod_on_tx_msg(pjsip_tx_data *tdata) |
| { |
| return pjsip_tx_data_encode(tdata); |
| } |
| |
| /* |
| * Send a SIP message using the specified transport. |
| */ |
| PJ_DEF(pj_status_t) pjsip_transport_send( pjsip_transport *tr, |
| pjsip_tx_data *tdata, |
| const pj_sockaddr_t *addr, |
| int addr_len, |
| void *token, |
| pjsip_tp_send_callback cb) |
| { |
| pj_status_t status; |
| |
| PJ_ASSERT_RETURN(tr && tdata && addr, PJ_EINVAL); |
| |
| /* Is it currently being sent? */ |
| if (tdata->is_pending) { |
| pj_assert(!"Invalid operation step!"); |
| PJ_LOG(2,(THIS_FILE, "Unable to send %s: message is pending", |
| pjsip_tx_data_get_info(tdata))); |
| return PJSIP_EPENDINGTX; |
| } |
| |
| /* Add reference to prevent deletion, and to cancel idle timer if |
| * it's running. |
| */ |
| pjsip_transport_add_ref(tr); |
| |
| /* Fill in tp_info. */ |
| tdata->tp_info.transport = tr; |
| pj_memcpy(&tdata->tp_info.dst_addr, addr, addr_len); |
| tdata->tp_info.dst_addr_len = addr_len; |
| |
| pj_inet_ntop(((pj_sockaddr*)addr)->addr.sa_family, |
| pj_sockaddr_get_addr(addr), |
| tdata->tp_info.dst_name, |
| sizeof(tdata->tp_info.dst_name)); |
| tdata->tp_info.dst_port = pj_sockaddr_get_port(addr); |
| |
| /* Distribute to modules. |
| * When the message reach mod_msg_print, the contents of the message will |
| * be "printed" to contiguous buffer. |
| */ |
| if (tr->tpmgr->on_tx_msg) { |
| status = (*tr->tpmgr->on_tx_msg)(tr->endpt, tdata); |
| if (status != PJ_SUCCESS) { |
| pjsip_transport_dec_ref(tr); |
| return status; |
| } |
| } |
| |
| /* Save callback data. */ |
| tdata->token = token; |
| tdata->cb = cb; |
| |
| /* Add reference counter. */ |
| pjsip_tx_data_add_ref(tdata); |
| |
| /* Mark as pending. */ |
| tdata->is_pending = 1; |
| |
| /* Send to transport. */ |
| status = (*tr->send_msg)(tr, tdata, addr, addr_len, (void*)tdata, |
| &transport_send_callback); |
| |
| if (status != PJ_EPENDING) { |
| tdata->is_pending = 0; |
| pjsip_tx_data_dec_ref(tdata); |
| } |
| |
| pjsip_transport_dec_ref(tr); |
| return status; |
| } |
| |
| |
| /* send_raw() callback */ |
| static void send_raw_callback(pjsip_transport *transport, |
| void *token, |
| pj_ssize_t size) |
| { |
| pjsip_tx_data *tdata = (pjsip_tx_data*) token; |
| |
| /* Mark pending off so that app can resend/reuse txdata from inside |
| * the callback. |
| */ |
| tdata->is_pending = 0; |
| |
| /* Call callback, if any. */ |
| if (tdata->cb) { |
| (*tdata->cb)(tdata->token, tdata, size); |
| } |
| |
| /* Decrement tdata reference count. */ |
| pjsip_tx_data_dec_ref(tdata); |
| |
| /* Decrement transport reference count */ |
| pjsip_transport_dec_ref(transport); |
| } |
| |
| |
| /* Send raw data */ |
| PJ_DEF(pj_status_t) pjsip_tpmgr_send_raw(pjsip_tpmgr *mgr, |
| pjsip_transport_type_e tp_type, |
| const pjsip_tpselector *sel, |
| pjsip_tx_data *tdata, |
| const void *raw_data, |
| pj_size_t data_len, |
| const pj_sockaddr_t *addr, |
| int addr_len, |
| void *token, |
| pjsip_tp_send_callback cb) |
| { |
| pjsip_transport *tr; |
| pj_status_t status; |
| |
| /* Acquire the transport */ |
| status = pjsip_tpmgr_acquire_transport(mgr, tp_type, addr, addr_len, |
| sel, &tr); |
| if (status != PJ_SUCCESS) |
| return status; |
| |
| /* Create transmit data buffer if one is not specified */ |
| if (tdata == NULL) { |
| status = pjsip_endpt_create_tdata(tr->endpt, &tdata); |
| if (status != PJ_SUCCESS) { |
| pjsip_transport_dec_ref(tr); |
| return status; |
| } |
| |
| tdata->info = "raw"; |
| |
| /* Add reference counter. */ |
| pjsip_tx_data_add_ref(tdata); |
| } |
| |
| /* Allocate buffer */ |
| if (tdata->buf.start == NULL || |
| (tdata->buf.end - tdata->buf.start) < (int)data_len) |
| { |
| /* Note: data_len may be zero, so allocate +1 */ |
| tdata->buf.start = (char*) pj_pool_alloc(tdata->pool, data_len+1); |
| tdata->buf.end = tdata->buf.start + data_len + 1; |
| } |
| |
| /* Copy data, if any! (application may send zero len packet) */ |
| if (data_len) { |
| pj_memcpy(tdata->buf.start, raw_data, data_len); |
| } |
| tdata->buf.cur = tdata->buf.start + data_len; |
| |
| /* Save callback data. */ |
| tdata->token = token; |
| tdata->cb = cb; |
| |
| /* Mark as pending. */ |
| tdata->is_pending = 1; |
| |
| /* Send to transport */ |
| status = tr->send_msg(tr, tdata, addr, addr_len, |
| tdata, &send_raw_callback); |
| |
| if (status != PJ_EPENDING) { |
| /* callback will not be called, so destroy tdata now. */ |
| pjsip_tx_data_dec_ref(tdata); |
| pjsip_transport_dec_ref(tr); |
| } |
| |
| return status; |
| } |
| |
| |
| static void transport_idle_callback(pj_timer_heap_t *timer_heap, |
| struct pj_timer_entry *entry) |
| { |
| pjsip_transport *tp = (pjsip_transport*) entry->user_data; |
| pj_assert(tp != NULL); |
| |
| PJ_UNUSED_ARG(timer_heap); |
| |
| if (entry->id == PJ_FALSE) |
| return; |
| |
| entry->id = PJ_FALSE; |
| |
| /* Set is_destroying flag under transport manager mutex to avoid |
| * race condition with pjsip_tpmgr_acquire_transport2(). |
| */ |
| pj_lock_acquire(tp->tpmgr->lock); |
| if (pj_atomic_get(tp->ref_cnt) == 0) { |
| tp->is_destroying = PJ_TRUE; |
| } else { |
| pj_lock_release(tp->tpmgr->lock); |
| return; |
| } |
| pj_lock_release(tp->tpmgr->lock); |
| |
| pjsip_transport_destroy(tp); |
| } |
| |
| |
| static pj_bool_t is_transport_valid(pjsip_transport *tp, pjsip_tpmgr *tpmgr, |
| const pjsip_transport_key *key, |
| int key_len) |
| { |
| transport *tp_entry; |
| |
| tp_entry = (transport *)pj_hash_get(tpmgr->table, key, key_len, NULL); |
| if (tp_entry != NULL) { |
| |
| transport *tp_iter = tp_entry; |
| do { |
| if (tp_iter->tp == tp) { |
| return PJ_TRUE; |
| } |
| tp_iter = tp_iter->next; |
| } while (tp_iter != tp_entry); |
| } |
| |
| return PJ_FALSE; |
| } |
| |
| /* |
| * Add ref. |
| */ |
| PJ_DEF(pj_status_t) pjsip_transport_add_ref( pjsip_transport *tp ) |
| { |
| pjsip_tpmgr *tpmgr; |
| pjsip_transport_key key; |
| int key_len; |
| |
| PJ_ASSERT_RETURN(tp != NULL, PJ_EINVAL); |
| |
| /* Add ref transport group lock, if any */ |
| if (tp->grp_lock) |
| pj_grp_lock_add_ref(tp->grp_lock); |
| |
| /* Cache some vars for checking transport validity later */ |
| tpmgr = tp->tpmgr; |
| key_len = sizeof(tp->key.type) + tp->addr_len; |
| pj_memcpy(&key, &tp->key, key_len); |
| |
| if (pj_atomic_inc_and_get(tp->ref_cnt) == 1) { |
| pj_lock_acquire(tpmgr->lock); |
| /* Verify again. But first, make sure transport is still valid |
| * (see #1883). |
| */ |
| if (is_transport_valid(tp, tpmgr, &key, key_len) && |
| pj_atomic_get(tp->ref_cnt) == 1) |
| { |
| if (tp->idle_timer.id != PJ_FALSE) { |
| tp->idle_timer.id = PJ_FALSE; |
| pjsip_endpt_cancel_timer(tp->tpmgr->endpt, &tp->idle_timer); |
| } |
| } |
| pj_lock_release(tpmgr->lock); |
| } |
| |
| return PJ_SUCCESS; |
| } |
| |
| /* |
| * Dec ref. |
| */ |
| PJ_DEF(pj_status_t) pjsip_transport_dec_ref( pjsip_transport *tp ) |
| { |
| pjsip_tpmgr *tpmgr; |
| pjsip_transport_key key; |
| int key_len; |
| |
| PJ_ASSERT_RETURN(tp != NULL, PJ_EINVAL); |
| pj_assert(pj_atomic_get(tp->ref_cnt) > 0); |
| |
| /* Cache some vars for checking transport validity later */ |
| tpmgr = tp->tpmgr; |
| key_len = sizeof(tp->key.type) + tp->addr_len; |
| pj_memcpy(&key, &tp->key, key_len); |
| |
| if (pj_atomic_dec_and_get(tp->ref_cnt) == 0) { |
| pj_lock_acquire(tpmgr->lock); |
| /* Verify again. Do not register timer if the transport is |
| * being destroyed. But first, make sure transport is still valid |
| * (see #1883). |
| */ |
| if (is_transport_valid(tp, tpmgr, &key, key_len) && |
| !tp->is_destroying && pj_atomic_get(tp->ref_cnt) == 0) |
| { |
| pj_time_val delay; |
| |
| /* If transport is in graceful shutdown, then this is the |
| * last user who uses the transport. Schedule to destroy the |
| * transport immediately. Otherwise schedule idle timer. |
| */ |
| if (tp->is_shutdown) { |
| delay.sec = delay.msec = 0; |
| } else { |
| delay.sec = (tp->dir==PJSIP_TP_DIR_OUTGOING) ? |
| PJSIP_TRANSPORT_IDLE_TIME : |
| PJSIP_TRANSPORT_SERVER_IDLE_TIME; |
| delay.msec = 0; |
| } |
| |
| /* Avoid double timer entry scheduling */ |
| if (pj_timer_entry_running(&tp->idle_timer)) |
| pjsip_endpt_cancel_timer(tp->tpmgr->endpt, &tp->idle_timer); |
| |
| pjsip_endpt_schedule_timer_w_grp_lock(tp->tpmgr->endpt, |
| &tp->idle_timer, |
| &delay, |
| PJ_TRUE, |
| tp->grp_lock); |
| } |
| pj_lock_release(tpmgr->lock); |
| } |
| |
| /* Dec ref transport group lock, if any */ |
| if (tp->grp_lock) { |
| pj_grp_lock_dec_ref(tp->grp_lock); |
| } |
| |
| return PJ_SUCCESS; |
| } |
| |
| |
| /** |
| * Register a transport. |
| */ |
| PJ_DEF(pj_status_t) pjsip_transport_register( pjsip_tpmgr *mgr, |
| pjsip_transport *tp ) |
| { |
| int key_len; |
| pj_uint32_t hval; |
| transport *tp_ref = NULL; |
| transport *tp_add = NULL; |
| |
| /* Init. */ |
| tp->tpmgr = mgr; |
| pj_bzero(&tp->idle_timer, sizeof(tp->idle_timer)); |
| tp->idle_timer.user_data = tp; |
| tp->idle_timer.cb = &transport_idle_callback; |
| |
| /* |
| * Register to hash table (see Trac ticket #42). |
| */ |
| key_len = sizeof(tp->key.type) + tp->addr_len; |
| pj_lock_acquire(mgr->lock); |
| |
| hval = 0; |
| tp_ref = (transport *)pj_hash_get(mgr->table, &tp->key, key_len, &hval); |
| |
| /* Get an empty entry from the freelist. */ |
| if (pj_list_empty(&mgr->tp_entry_freelist)) { |
| unsigned i = 0; |
| |
| TRACE_((THIS_FILE, "Transport list is full, allocate new entry")); |
| /* Allocate new entry for the freelist. */ |
| for (; i < PJSIP_TRANSPORT_ENTRY_ALLOC_CNT; ++i) { |
| tp_add = PJ_POOL_ZALLOC_T(mgr->pool, transport); |
| if (!tp_add) |
| return PJ_ENOMEM; |
| pj_list_init(tp_add); |
| pj_list_push_back(&mgr->tp_entry_freelist, tp_add); |
| } |
| } |
| tp_add = mgr->tp_entry_freelist.next; |
| tp_add->tp = tp; |
| pj_list_erase(tp_add); |
| |
| if (tp_ref) { |
| /* There'a already a transport list from the hash table. Add the |
| * new transport to the list. |
| */ |
| pj_list_push_back(tp_ref, tp_add); |
| TRACE_((THIS_FILE, "Remote address already registered, " |
| "appended the transport to the list")); |
| } else { |
| /* Transport list not found, add it to the hash table. */ |
| pj_hash_set_np(mgr->table, &tp->key, key_len, hval, tp_add->tp_buf, |
| tp_add); |
| TRACE_((THIS_FILE, "Remote address not registered, " |
| "added the transport to the hash")); |
| } |
| |
| /* Add ref transport group lock, if any */ |
| if (tp->grp_lock) |
| pj_grp_lock_add_ref(tp->grp_lock); |
| |
| pj_lock_release(mgr->lock); |
| |
| TRACE_((THIS_FILE, "Transport %s registered: type=%s, remote=%s:%d", |
| tp->obj_name, |
| pjsip_transport_get_type_name(tp->key.type), |
| pj_sockaddr_has_addr(&tp->key.rem_addr)? |
| addr_string(&tp->key.rem_addr):"", |
| pj_sockaddr_has_addr(&tp->key.rem_addr)? |
| pj_sockaddr_get_port(&tp->key.rem_addr):0)); |
| |
| return PJ_SUCCESS; |
| } |
| |
| /* Force destroy transport (e.g. during transport manager shutdown. */ |
| static pj_status_t destroy_transport( pjsip_tpmgr *mgr, |
| pjsip_transport *tp ) |
| { |
| int key_len; |
| pj_uint32_t hval; |
| void *entry; |
| |
| tp->is_destroying = PJ_TRUE; |
| |
| TRACE_((THIS_FILE, "Transport %s is being destroyed", tp->obj_name)); |
| |
| pj_lock_acquire(tp->lock); |
| pj_lock_acquire(mgr->lock); |
| |
| /* |
| * Unregister timer, if any. |
| */ |
| //pj_assert(tp->idle_timer.id == PJ_FALSE); |
| if (tp->idle_timer.id != PJ_FALSE) { |
| tp->idle_timer.id = PJ_FALSE; |
| pjsip_endpt_cancel_timer(mgr->endpt, &tp->idle_timer); |
| } |
| |
| /* |
| * Unregister from hash table (see Trac ticket #42). |
| */ |
| key_len = sizeof(tp->key.type) + tp->addr_len; |
| hval = 0; |
| entry = pj_hash_get(mgr->table, &tp->key, key_len, &hval); |
| if (entry) { |
| transport *tp_ref = (transport *)entry; |
| transport *tp_iter = tp_ref; |
| /* Search the matching entry from the transport list. */ |
| do { |
| if (tp_iter->tp == tp) { |
| transport *tp_next = tp_iter->next; |
| |
| /* Update hash table : |
| * - transport list only contain single element, or |
| * - the entry is the first element of the transport list. |
| */ |
| if (tp_iter == tp_ref) { |
| pj_hash_set(NULL, mgr->table, &tp->key, key_len, hval, |
| NULL); |
| |
| if (tp_ref->next != tp_ref) { |
| /* The transport list has multiple entry. */ |
| pj_hash_set_np(mgr->table, &tp_next->tp->key, key_len, |
| hval, tp_next->tp_buf, tp_next); |
| TRACE_((THIS_FILE, "Hash entry updated after " |
| "transport %d being destroyed", |
| tp->obj_name)); |
| } else { |
| TRACE_((THIS_FILE, "Hash entry deleted after " |
| "transport %d being destroyed", |
| tp->obj_name)); |
| } |
| } |
| |
| pj_list_erase(tp_iter); |
| /* Put back to the transport freelist. */ |
| pj_list_push_back(&mgr->tp_entry_freelist, tp_iter); |
| |
| break; |
| } |
| tp_iter = tp_iter->next; |
| } while (tp_iter != tp_ref); |
| |
| if (tp_iter->tp != tp) { |
| PJ_LOG(3, (THIS_FILE, "Warning: transport %s being destroyed is " |
| "not registered", tp->obj_name)); |
| } |
| } else { |
| PJ_LOG(3, (THIS_FILE, "Warning: transport %s being destroyed is " |
| "not found in the hash table", tp->obj_name)); |
| } |
| |
| pj_lock_release(mgr->lock); |
| pj_lock_release(tp->lock); |
| |
| /* Dec ref transport group lock, if any */ |
| if (tp->grp_lock) { |
| pj_grp_lock_dec_ref(tp->grp_lock); |
| } |
| |
| /* Destroy. */ |
| return tp->destroy(tp); |
| } |
| |
| |
| /* |
| * Start graceful shutdown procedure for this transport. |
| */ |
| PJ_DEF(pj_status_t) pjsip_transport_shutdown(pjsip_transport *tp) |
| { |
| return pjsip_transport_shutdown2(tp, PJ_FALSE); |
| } |
| |
| |
| /* |
| * Start shutdown procedure for this transport. |
| */ |
| PJ_DEF(pj_status_t) pjsip_transport_shutdown2(pjsip_transport *tp, |
| pj_bool_t force) |
| { |
| pjsip_tpmgr *mgr; |
| pj_status_t status; |
| pjsip_tp_state_callback state_cb; |
| |
| PJ_LOG(4, (THIS_FILE, "Transport %s shutting down, force=%d", |
| tp->obj_name, force)); |
| |
| pj_lock_acquire(tp->lock); |
| |
| mgr = tp->tpmgr; |
| pj_lock_acquire(mgr->lock); |
| |
| /* Do nothing if transport is being shutdown/destroyed already */ |
| if (tp->is_shutdown || tp->is_destroying) { |
| pj_lock_release(mgr->lock); |
| pj_lock_release(tp->lock); |
| return PJ_SUCCESS; |
| } |
| |
| status = PJ_SUCCESS; |
| |
| /* Instruct transport to shutdown itself */ |
| if (tp->do_shutdown) |
| status = tp->do_shutdown(tp); |
| |
| if (status == PJ_SUCCESS) |
| tp->is_shutdown = PJ_TRUE; |
| |
| /* Notify application of transport shutdown */ |
| state_cb = pjsip_tpmgr_get_state_cb(tp->tpmgr); |
| if (state_cb) { |
| pjsip_transport_state_info state_info; |
| |
| pj_bzero(&state_info, sizeof(state_info)); |
| state_info.status = PJ_ECANCELLED; |
| (*state_cb)(tp, (force? PJSIP_TP_STATE_DISCONNECTED: |
| PJSIP_TP_STATE_SHUTDOWN), &state_info); |
| } |
| |
| /* If transport reference count is zero, start timer count-down */ |
| if (pj_atomic_get(tp->ref_cnt) == 0) { |
| pjsip_transport_add_ref(tp); |
| pjsip_transport_dec_ref(tp); |
| } |
| |
| pj_lock_release(mgr->lock); |
| pj_lock_release(tp->lock); |
| |
| return status; |
| } |
| |
| |
| /** |
| * Unregister transport. |
| */ |
| PJ_DEF(pj_status_t) pjsip_transport_destroy( pjsip_transport *tp) |
| { |
| pjsip_tp_state_callback state_cb; |
| |
| /* Must have no user. */ |
| PJ_ASSERT_RETURN(pj_atomic_get(tp->ref_cnt) == 0, PJSIP_EBUSY); |
| |
| /* Notify application of transport destroy */ |
| state_cb = pjsip_tpmgr_get_state_cb(tp->tpmgr); |
| if (state_cb) { |
| pjsip_transport_state_info state_info; |
| |
| pj_bzero(&state_info, sizeof(state_info)); |
| (*state_cb)(tp, PJSIP_TP_STATE_DESTROY, &state_info); |
| } |
| |
| /* Destroy. */ |
| return destroy_transport(tp->tpmgr, tp); |
| } |
| |
| |
| |
| /***************************************************************************** |
| * |
| * TRANSPORT FACTORY |
| * |
| *****************************************************************************/ |
| |
| |
| PJ_DEF(pj_status_t) pjsip_tpmgr_register_tpfactory( pjsip_tpmgr *mgr, |
| pjsip_tpfactory *tpf) |
| { |
| pjsip_tpfactory *p; |
| pj_status_t status; |
| |
| pj_lock_acquire(mgr->lock); |
| |
| /* Check that no same factory has been registered. */ |
| status = PJ_SUCCESS; |
| for (p=mgr->factory_list.next; p!=&mgr->factory_list; p=p->next) { |
| if (p->type == tpf->type && |
| !pj_sockaddr_cmp(&tpf->local_addr, &p->local_addr)) |
| { |
| status = PJSIP_ETYPEEXISTS; |
| break; |
| } |
| if (p == tpf) { |
| status = PJ_EEXISTS; |
| break; |
| } |
| } |
| |
| if (status != PJ_SUCCESS) { |
| pj_lock_release(mgr->lock); |
| return status; |
| } |
| |
| pj_list_insert_before(&mgr->factory_list, tpf); |
| |
| pj_lock_release(mgr->lock); |
| |
| return PJ_SUCCESS; |
| } |
| |
| |
| /** |
| * Unregister factory. |
| */ |
| PJ_DEF(pj_status_t) pjsip_tpmgr_unregister_tpfactory( pjsip_tpmgr *mgr, |
| pjsip_tpfactory *tpf) |
| { |
| pj_lock_acquire(mgr->lock); |
| |
| pj_assert(pj_list_find_node(&mgr->factory_list, tpf) == tpf); |
| pj_list_erase(tpf); |
| |
| pj_lock_release(mgr->lock); |
| |
| return PJ_SUCCESS; |
| } |
| |
| PJ_DECL(void) pjsip_tpmgr_fla2_param_default(pjsip_tpmgr_fla2_param *prm) |
| { |
| pj_bzero(prm, sizeof(*prm)); |
| } |
| |
| static pj_bool_t pjsip_tpmgr_is_tpfactory_valid(pjsip_tpmgr *mgr, |
| pjsip_tpfactory *tpf) |
| { |
| pjsip_tpfactory *p; |
| |
| pj_lock_acquire(mgr->lock); |
| for (p=mgr->factory_list.next; p!=&mgr->factory_list; p=p->next) { |
| if (p == tpf) { |
| pj_lock_release(mgr->lock); |
| return PJ_TRUE; |
| } |
| } |
| pj_lock_release(mgr->lock); |
| |
| return PJ_FALSE; |
| } |
| |
| /***************************************************************************** |
| * |
| * TRANSPORT MANAGER |
| * |
| *****************************************************************************/ |
| |
| /* |
| * Create a new transport manager. |
| */ |
| PJ_DEF(pj_status_t) pjsip_tpmgr_create( pj_pool_t *pool, |
| pjsip_endpoint *endpt, |
| pjsip_rx_callback rx_cb, |
| pjsip_tx_callback tx_cb, |
| pjsip_tpmgr **p_mgr) |
| { |
| pjsip_tpmgr *mgr; |
| pj_status_t status; |
| unsigned i = 0; |
| pj_pool_t *mgr_pool; |
| |
| PJ_ASSERT_RETURN(pool && endpt && rx_cb && p_mgr, PJ_EINVAL); |
| |
| /* Register mod_msg_print module. */ |
| status = pjsip_endpt_register_module(endpt, &mod_msg_print); |
| if (status != PJ_SUCCESS) |
| return status; |
| |
| /* Create and initialize transport manager. */ |
| mgr_pool = pjsip_endpt_create_pool(endpt, "tpmgr", |
| TPMGR_POOL_INIT_SIZE, |
| TPMGR_POOL_INC_SIZE); |
| mgr = PJ_POOL_ZALLOC_T(mgr_pool, pjsip_tpmgr); |
| mgr->endpt = endpt; |
| mgr->on_rx_msg = rx_cb; |
| mgr->on_tx_msg = tx_cb; |
| mgr->pool = mgr_pool; |
| |
| if (!mgr->pool) |
| return PJ_ENOMEM; |
| |
| pj_list_init(&mgr->factory_list); |
| pj_list_init(&mgr->tdata_list); |
| pj_list_init(&mgr->tp_entry_freelist); |
| |
| mgr->table = pj_hash_create(mgr->pool, PJSIP_TPMGR_HTABLE_SIZE); |
| if (!mgr->table) |
| return PJ_ENOMEM; |
| |
| status = pj_lock_create_recursive_mutex(mgr->pool, "tmgr%p", &mgr->lock); |
| if (status != PJ_SUCCESS) |
| return status; |
| |
| for (; i < PJSIP_TRANSPORT_ENTRY_ALLOC_CNT; ++i) { |
| transport *tp_add = NULL; |
| |
| tp_add = PJ_POOL_ZALLOC_T(mgr->pool, transport); |
| if (!tp_add) |
| return PJ_ENOMEM; |
| pj_list_init(tp_add); |
| pj_list_push_back(&mgr->tp_entry_freelist, tp_add); |
| } |
| |
| #if defined(PJ_DEBUG) && PJ_DEBUG!=0 |
| status = pj_atomic_create(mgr->pool, 0, &mgr->tdata_counter); |
| if (status != PJ_SUCCESS) { |
| pj_lock_destroy(mgr->lock); |
| return status; |
| } |
| #endif |
| |
| /* Set transport state callback */ |
| pjsip_tpmgr_set_state_cb(mgr, &tp_state_callback); |
| |
| PJ_LOG(5, (THIS_FILE, "Transport manager created.")); |
| |
| *p_mgr = mgr; |
| return PJ_SUCCESS; |
| } |
| |
| /* Get the interface to send packet to the specified address */ |
| static pj_status_t get_net_interface(pjsip_transport_type_e tp_type, |
| const pj_str_t *dst, |
| pj_str_t *itf_str_addr) |
| { |
| int af; |
| pj_sockaddr itf_addr; |
| pj_status_t status = -1; |
| |
| af = (tp_type & PJSIP_TRANSPORT_IPV6)? pj_AF_INET6() : pj_AF_INET(); |
| |
| if (pjsip_cfg()->endpt.resolve_hostname_to_get_interface) { |
| status = pj_getipinterface(af, dst, &itf_addr, PJ_TRUE, NULL); |
| } |
| |
| if (status != PJ_SUCCESS) { |
| status = pj_getipinterface(af, dst, &itf_addr, PJ_FALSE, NULL); |
| if (status != PJ_SUCCESS) { |
| /* If it fails, e.g: on WM6(http://support.microsoft.com/kb/129065), |
| * just fallback using pj_gethostip(), see ticket #1660. |
| */ |
| PJ_PERROR(5,(THIS_FILE, status, |
| "Warning: unable to determine local interface, " |
| "fallback to default interface!")); |
| status = pj_gethostip(af, &itf_addr); |
| if (status != PJ_SUCCESS) |
| return status; |
| } |
| } |
| |
| /* Print address */ |
| pj_sockaddr_print(&itf_addr, itf_str_addr->ptr, |
| PJ_INET6_ADDRSTRLEN, 0); |
| itf_str_addr->slen = pj_ansi_strlen(itf_str_addr->ptr); |
| |
| return PJ_SUCCESS; |
| } |
| |
| /* |
| * Find out the appropriate local address info (IP address and port) to |
| * advertise in Contact header based on the remote address to be |
| * contacted. The local address info would be the address name of the |
| * transport or listener which will be used to send the request. |
| * |
| * In this implementation, it will only select the transport based on |
| * the transport type in the request. |
| */ |
| PJ_DEF(pj_status_t) pjsip_tpmgr_find_local_addr2(pjsip_tpmgr *tpmgr, |
| pj_pool_t *pool, |
| pjsip_tpmgr_fla2_param *prm) |
| { |
| char tmp_buf[PJ_INET6_ADDRSTRLEN+10]; |
| pj_str_t tmp_str; |
| pj_status_t status = PJSIP_EUNSUPTRANSPORT; |
| unsigned flag; |
| |
| /* Sanity checks */ |
| PJ_ASSERT_RETURN(tpmgr && pool && prm, PJ_EINVAL); |
| |
| pj_strset(&tmp_str, tmp_buf, 0); |
| prm->ret_addr.slen = 0; |
| prm->ret_port = 0; |
| prm->ret_tp = NULL; |
| |
| flag = pjsip_transport_get_flag_from_type(prm->tp_type); |
| |
| if (prm->tp_sel && prm->tp_sel->type == PJSIP_TPSELECTOR_TRANSPORT && |
| prm->tp_sel->u.transport) |
| { |
| const pjsip_transport *tp = prm->tp_sel->u.transport; |
| if (prm->local_if) { |
| status = get_net_interface((pjsip_transport_type_e)tp->key.type, |
| &prm->dst_host, &tmp_str); |
| if (status != PJ_SUCCESS) |
| goto on_return; |
| pj_strdup(pool, &prm->ret_addr, &tmp_str); |
| prm->ret_port = pj_sockaddr_get_port(&tp->local_addr); |
| prm->ret_tp = tp; |
| } else { |
| pj_strdup(pool, &prm->ret_addr, &tp->local_name.host); |
| prm->ret_port = (pj_uint16_t)tp->local_name.port; |
| } |
| status = PJ_SUCCESS; |
| |
| } else if (prm->tp_sel && prm->tp_sel->type == PJSIP_TPSELECTOR_LISTENER && |
| prm->tp_sel->u.listener) |
| { |
| if (prm->local_if) { |
| status = get_net_interface(prm->tp_sel->u.listener->type, |
| &prm->dst_host, &tmp_str); |
| if (status != PJ_SUCCESS) |
| goto on_return; |
| pj_strdup(pool, &prm->ret_addr, &tmp_str); |
| } else { |
| pj_strdup(pool, &prm->ret_addr, |
| &prm->tp_sel->u.listener->addr_name.host); |
| } |
| prm->ret_port = (pj_uint16_t)prm->tp_sel->u.listener->addr_name.port; |
| status = PJ_SUCCESS; |
| |
| } else if ((flag & PJSIP_TRANSPORT_DATAGRAM) != 0) { |
| pj_sockaddr remote; |
| int addr_len; |
| pjsip_transport *tp; |
| |
| pj_bzero(&remote, sizeof(remote)); |
| if (prm->tp_type & PJSIP_TRANSPORT_IPV6) { |
| addr_len = sizeof(pj_sockaddr_in6); |
| remote.addr.sa_family = pj_AF_INET6(); |
| } else { |
| addr_len = sizeof(pj_sockaddr_in); |
| remote.addr.sa_family = pj_AF_INET(); |
| } |
| |
| status = pjsip_tpmgr_acquire_transport(tpmgr, prm->tp_type, &remote, |
| addr_len, NULL, &tp); |
| |
| if (status == PJ_SUCCESS) { |
| if (prm->local_if) { |
| status = get_net_interface((pjsip_transport_type_e) |
| tp->key.type, |
| &prm->dst_host, &tmp_str); |
| if (status != PJ_SUCCESS) |
| goto on_return; |
| pj_strdup(pool, &prm->ret_addr, &tmp_str); |
| prm->ret_port = pj_sockaddr_get_port(&tp->local_addr); |
| prm->ret_tp = tp; |
| } else { |
| pj_strdup(pool, &prm->ret_addr, &tp->local_name.host); |
| prm->ret_port = (pj_uint16_t)tp->local_name.port; |
| } |
| |
| pjsip_transport_dec_ref(tp); |
| } |
| |
| } else { |
| /* For connection oriented transport, enum the factories */ |
| pjsip_tpfactory *f; |
| |
| pj_lock_acquire(tpmgr->lock); |
| |
| f = tpmgr->factory_list.next; |
| while (f != &tpmgr->factory_list) { |
| if (f->type == prm->tp_type) |
| break; |
| f = f->next; |
| } |
| |
| if (f != &tpmgr->factory_list) { |
| if (prm->local_if) { |
| status = get_net_interface(f->type, &prm->dst_host, |
| &tmp_str); |
| if (status == PJ_SUCCESS) { |
| pj_strdup(pool, &prm->ret_addr, &tmp_str); |
| } else { |
| /* It could fail "normally" on certain cases, e.g. |
| * when connecting to IPv6 link local address, it |
| * will wail with EINVAL. |
| * In this case, fallback to use the default interface |
| * rather than failing the call. |
| */ |
| PJ_PERROR(5,(THIS_FILE, status, "Warning: unable to " |
| "determine local interface")); |
| pj_strdup(pool, &prm->ret_addr, &f->addr_name.host); |
| status = PJ_SUCCESS; |
| } |
| } else { |
| pj_strdup(pool, &prm->ret_addr, &f->addr_name.host); |
| } |
| prm->ret_port = (pj_uint16_t)f->addr_name.port; |
| status = PJ_SUCCESS; |
| } |
| pj_lock_release(tpmgr->lock); |
| } |
| |
| on_return: |
| return status; |
| } |
| |
| PJ_DEF(pj_status_t) pjsip_tpmgr_find_local_addr( pjsip_tpmgr *tpmgr, |
| pj_pool_t *pool, |
| pjsip_transport_type_e type, |
| const pjsip_tpselector *sel, |
| pj_str_t *ip_addr, |
| int *port) |
| { |
| pjsip_tpmgr_fla2_param prm; |
| pj_status_t status; |
| |
| pjsip_tpmgr_fla2_param_default(&prm); |
| prm.tp_type = type; |
| prm.tp_sel = sel; |
| |
| status = pjsip_tpmgr_find_local_addr2(tpmgr, pool, &prm); |
| if (status != PJ_SUCCESS) |
| return status; |
| |
| *ip_addr = prm.ret_addr; |
| *port = prm.ret_port; |
| |
| return PJ_SUCCESS; |
| } |
| |
| /* |
| * Return number of transports currently registered to the transport |
| * manager. |
| */ |
| PJ_DEF(unsigned) pjsip_tpmgr_get_transport_count(pjsip_tpmgr *mgr) |
| { |
| pj_hash_iterator_t itr_val; |
| pj_hash_iterator_t *itr; |
| int nr_of_transports = 0; |
| |
| pj_lock_acquire(mgr->lock); |
| |
| itr = pj_hash_first(mgr->table, &itr_val); |
| while (itr) { |
| transport *tp_entry = (transport *)pj_hash_this(mgr->table, itr); |
| nr_of_transports += (int)pj_list_size(tp_entry); |
| itr = pj_hash_next(mgr->table, itr); |
| } |
| |
| pj_lock_release(mgr->lock); |
| |
| return nr_of_transports; |
| } |
| |
| /* |
| * pjsip_tpmgr_destroy() |
| * |
| * Destroy transport manager. |
| */ |
| PJ_DEF(pj_status_t) pjsip_tpmgr_destroy( pjsip_tpmgr *mgr ) |
| { |
| pj_hash_iterator_t itr_val; |
| pj_hash_iterator_t *itr; |
| pjsip_tpfactory *factory; |
| pjsip_endpoint *endpt = mgr->endpt; |
| |
| PJ_LOG(5, (THIS_FILE, "Destroying transport manager")); |
| |
| pj_lock_acquire(mgr->lock); |
| |
| /* |
| * Destroy all transports in the hash table. |
| */ |
| for (itr = pj_hash_first(mgr->table, &itr_val); itr; |
| itr = pj_hash_first(mgr->table, &itr_val)) |
| { |
| transport *tp_ref; |
| tp_ref = pj_hash_this(mgr->table, itr); |
| destroy_transport(mgr, tp_ref->tp); |
| } |
| |
| /* |
| * Destroy all factories/listeners. |
| */ |
| factory = mgr->factory_list.next; |
| while (factory != &mgr->factory_list) { |
| pjsip_tpfactory *next = factory->next; |
| |
| factory->destroy(factory); |
| |
| factory = next; |
| } |
| |
| pj_lock_release(mgr->lock); |
| |
| #if defined(PJ_DEBUG) && PJ_DEBUG!=0 |
| /* If you encounter assert error on this line, it means there are |
| * leakings in transmit data (i.e. some transmit data have not been |
| * destroyed). |
| */ |
| //pj_assert(pj_atomic_get(mgr->tdata_counter) == 0); |
| if (pj_atomic_get(mgr->tdata_counter) != 0) { |
| PJ_LOG(3,(THIS_FILE, "Warning: %d transmit buffer(s) not freed!", |
| pj_atomic_get(mgr->tdata_counter))); |
| } |
| #endif |
| |
| /* |
| * Destroy any dangling transmit buffer. |
| */ |
| if (!pj_list_empty(&mgr->tdata_list)) { |
| pjsip_tx_data *tdata = mgr->tdata_list.next; |
| while (tdata != &mgr->tdata_list) { |
| pjsip_tx_data *next = tdata->next; |
| tx_data_destroy(tdata); |
| tdata = next; |
| } |
| PJ_LOG(3,(THIS_FILE, "Cleaned up dangling transmit buffer(s).")); |
| } |
| |
| #if defined(PJ_DEBUG) && PJ_DEBUG!=0 |
| pj_atomic_destroy(mgr->tdata_counter); |
| #endif |
| |
| pj_lock_destroy(mgr->lock); |
| |
| /* Unregister mod_msg_print. */ |
| if (mod_msg_print.id != -1) { |
| pjsip_endpt_unregister_module(endpt, &mod_msg_print); |
| } |
| |
| if (mgr->pool) { |
| pjsip_endpt_release_pool( mgr->endpt, mgr->pool ); |
| } |
| |
| return PJ_SUCCESS; |
| } |
| |
| |
| /* |
| * pjsip_tpmgr_receive_packet() |
| * |
| * Called by tranports when they receive a new packet. |
| */ |
| PJ_DEF(pj_ssize_t) pjsip_tpmgr_receive_packet( pjsip_tpmgr *mgr, |
| pjsip_rx_data *rdata) |
| { |
| pjsip_transport *tr = rdata->tp_info.transport; |
| |
| char *current_pkt; |
| pj_size_t remaining_len; |
| pj_size_t total_processed = 0; |
| |
| /* Check size. */ |
| pj_assert(rdata->pkt_info.len > 0); |
| if (rdata->pkt_info.len <= 0) |
| return -1; |
| |
| current_pkt = rdata->pkt_info.packet; |
| remaining_len = rdata->pkt_info.len; |
| |
| tr->last_recv_len = rdata->pkt_info.len; |
| pj_get_timestamp(&tr->last_recv_ts); |
| |
| /* Must NULL terminate buffer. This is the requirement of the |
| * parser etc. |
| */ |
| current_pkt[remaining_len] = '\0'; |
| |
| /* Process all message fragments. */ |
| while (remaining_len > 0) { |
| |
| pjsip_msg *msg; |
| char *p, *end; |
| char saved; |
| pj_size_t msg_fragment_size; |
| |
| /* Skip leading newlines as pjsip_find_msg() currently can't |
| * handle leading newlines. |
| */ |
| for (p=current_pkt, end=p+remaining_len; p!=end; ++p) { |
| if (*p != '\r' && *p != '\n') |
| break; |
| } |
| if (p!=current_pkt) { |
| remaining_len -= (p - current_pkt); |
| total_processed += (p - current_pkt); |
| |
| /* Notify application about the dropped newlines */ |
| if (mgr->tp_drop_data_cb) { |
| pjsip_tp_dropped_data dd; |
| pj_bzero(&dd, sizeof(dd)); |
| dd.tp = tr; |
| dd.data = current_pkt; |
| dd.len = p - current_pkt; |
| dd.status = PJ_EIGNORED; |
| (*mgr->tp_drop_data_cb)(&dd); |
| } |
| |
| current_pkt = p; |
| if (remaining_len == 0) { |
| return total_processed; |
| } |
| } |
| |
| /* Initialize default fragment size. */ |
| msg_fragment_size = remaining_len; |
| |
| /* Clear and init msg_info in rdata. |
| * Endpoint might inspect the values there when we call the callback |
| * to report some errors. |
| */ |
| pj_bzero(&rdata->msg_info, sizeof(rdata->msg_info)); |
| pj_list_init(&rdata->msg_info.parse_err); |
| rdata->msg_info.msg_buf = current_pkt; |
| rdata->msg_info.len = (int)remaining_len; |
| |
| /* For TCP transport, check if the whole message has been received. */ |
| if ((tr->flag & PJSIP_TRANSPORT_DATAGRAM) == 0) { |
| pj_status_t msg_status; |
| msg_status = pjsip_find_msg(current_pkt, remaining_len, PJ_FALSE, |
| &msg_fragment_size); |
| if (msg_status != PJ_SUCCESS) { |
| if (remaining_len == PJSIP_MAX_PKT_LEN) { |
| mgr->on_rx_msg(mgr->endpt, PJSIP_ERXOVERFLOW, rdata); |
| |
| /* Notify application about the message overflow */ |
| if (mgr->tp_drop_data_cb) { |
| pjsip_tp_dropped_data dd; |
| pj_bzero(&dd, sizeof(dd)); |
| dd.tp = tr; |
| dd.data = current_pkt; |
| dd.len = msg_fragment_size; |
| dd.status = PJSIP_ERXOVERFLOW; |
| (*mgr->tp_drop_data_cb)(&dd); |
| } |
| |
| /* Exhaust all data. */ |
| return rdata->pkt_info.len; |
| } else { |
| /* Not enough data in packet. */ |
| return total_processed; |
| } |
| } |
| } |
| |
| /* Update msg_info. */ |
| rdata->msg_info.len = (int)msg_fragment_size; |
| |
| /* Null terminate packet */ |
| saved = current_pkt[msg_fragment_size]; |
| current_pkt[msg_fragment_size] = '\0'; |
| |
| /* Parse the message. */ |
| rdata->msg_info.msg = msg = |
| pjsip_parse_rdata( current_pkt, msg_fragment_size, rdata); |
| |
| /* Restore null termination */ |
| current_pkt[msg_fragment_size] = saved; |
| |
| /* Check for parsing syntax error */ |
| if (msg==NULL || !pj_list_empty(&rdata->msg_info.parse_err)) { |
| pjsip_parser_err_report *err; |
| char buf[256]; |
| pj_str_t tmp; |
| |
| /* Gather syntax error information */ |
| tmp.ptr = buf; tmp.slen = 0; |
| err = rdata->msg_info.parse_err.next; |
| while (err != &rdata->msg_info.parse_err) { |
| int len; |
| len = pj_ansi_snprintf(tmp.ptr+tmp.slen, sizeof(buf)-tmp.slen, |
| ": %s exception when parsing '%.*s' " |
| "header on line %d col %d", |
| pj_exception_id_name(err->except_code), |
| (int)err->hname.slen, err->hname.ptr, |
| err->line, err->col); |
| if (len >= (int)sizeof(buf)-(int)tmp.slen) { |
| len = (int)sizeof(buf)-(int)tmp.slen; |
| } |
| if (len > 0) { |
| tmp.slen += len; |
| } |
| err = err->next; |
| } |
| |
| /* Only print error message if there's error. |
| * Sometimes we receive blank packets (packets with only CRLF) |
| * which were sent to keep NAT bindings. |
| */ |
| if (tmp.slen) { |
| PJ_LOG(1, (THIS_FILE, |
| "Error processing %d bytes packet from %s %s:%d %.*s:\n" |
| "%.*s\n" |
| "-- end of packet.", |
| msg_fragment_size, |
| rdata->tp_info.transport->type_name, |
| rdata->pkt_info.src_name, |
| rdata->pkt_info.src_port, |
| (int)tmp.slen, tmp.ptr, |
| (int)msg_fragment_size, |
| rdata->msg_info.msg_buf)); |
| } |
| |
| /* Notify application about the dropped data (syntax error) */ |
| if (tmp.slen && mgr->tp_drop_data_cb) { |
| pjsip_tp_dropped_data dd; |
| pj_bzero(&dd, sizeof(dd)); |
| dd.tp = tr; |
| dd.data = current_pkt; |
| dd.len = msg_fragment_size; |
| dd.status = PJSIP_EINVALIDMSG; |
| (*mgr->tp_drop_data_cb)(&dd); |
| |
| if (dd.len > 0 && dd.len < msg_fragment_size) |
| msg_fragment_size = dd.len; |
| } |
| |
| goto finish_process_fragment; |
| } |
| |
| /* Perform basic header checking. */ |
| if (rdata->msg_info.cid == NULL || |
| rdata->msg_info.cid->id.slen == 0 || |
| rdata->msg_info.from == NULL || |
| rdata->msg_info.to == NULL || |
| rdata->msg_info.via == NULL || |
| rdata->msg_info.cseq == NULL) |
| { |
| mgr->on_rx_msg(mgr->endpt, PJSIP_EMISSINGHDR, rdata); |
| |
| /* Notify application about the missing header. */ |
| if (mgr->tp_drop_data_cb) { |
| pjsip_tp_dropped_data dd; |
| pj_bzero(&dd, sizeof(dd)); |
| dd.tp = tr; |
| dd.data = current_pkt; |
| dd.len = msg_fragment_size; |
| dd.status = PJSIP_EMISSINGHDR; |
| (*mgr->tp_drop_data_cb)(&dd); |
| } |
| goto finish_process_fragment; |
| } |
| |
| /* For request: */ |
| if (rdata->msg_info.msg->type == PJSIP_REQUEST_MSG) { |
| /* always add received parameter to the via. */ |
| pj_strdup2(rdata->tp_info.pool, |
| &rdata->msg_info.via->recvd_param, |
| rdata->pkt_info.src_name); |
| |
| /* RFC 3581: |
| * If message contains "rport" param, put the received port there. |
| */ |
| if (rdata->msg_info.via->rport_param == 0) { |
| rdata->msg_info.via->rport_param = rdata->pkt_info.src_port; |
| } |
| } else { |
| /* Drop malformed responses */ |
| if (rdata->msg_info.msg->line.status.code < 100 || |
| rdata->msg_info.msg->line.status.code >= 700) |
| { |
| mgr->on_rx_msg(mgr->endpt, PJSIP_EINVALIDSTATUS, rdata); |
| |
| /* Notify application about the invalid status. */ |
| if (mgr->tp_drop_data_cb) { |
| pjsip_tp_dropped_data dd; |
| pj_bzero(&dd, sizeof(dd)); |
| dd.tp = tr; |
| dd.data = current_pkt; |
| dd.len = msg_fragment_size; |
| dd.status = PJSIP_EINVALIDSTATUS; |
| (*mgr->tp_drop_data_cb)(&dd); |
| } |
| goto finish_process_fragment; |
| } |
| } |
| |
| /* Drop response message if it has more than one Via. |
| */ |
| /* This is wrong. Proxy DOES receive responses with multiple |
| * Via headers! Thanks Aldo <acampi at deis.unibo.it> for pointing |
| * this out. |
| |
| if (msg->type == PJSIP_RESPONSE_MSG) { |
| pjsip_hdr *hdr; |
| hdr = (pjsip_hdr*)rdata->msg_info.via->next; |
| if (hdr != &msg->hdr) { |
| hdr = pjsip_msg_find_hdr(msg, PJSIP_H_VIA, hdr); |
| if (hdr) { |
| mgr->on_rx_msg(mgr->endpt, PJSIP_EMULTIPLEVIA, rdata); |
| goto finish_process_fragment; |
| } |
| } |
| } |
| */ |
| |
| /* Call the transport manager's upstream message callback. |
| */ |
| mgr->on_rx_msg(mgr->endpt, PJ_SUCCESS, rdata); |
| |
| |
| finish_process_fragment: |
| total_processed += msg_fragment_size; |
| current_pkt += msg_fragment_size; |
| remaining_len -= msg_fragment_size; |
| |
| } /* while (rdata->pkt_info.len > 0) */ |
| |
| |
| return total_processed; |
| } |
| |
| |
| /* |
| * pjsip_tpmgr_acquire_transport() |
| * |
| * Get transport suitable to communicate to remote. Create a new one |
| * if necessary. |
| */ |
| PJ_DEF(pj_status_t) pjsip_tpmgr_acquire_transport(pjsip_tpmgr *mgr, |
| pjsip_transport_type_e type, |
| const pj_sockaddr_t *remote, |
| int addr_len, |
| const pjsip_tpselector *sel, |
| pjsip_transport **tp) |
| { |
| return pjsip_tpmgr_acquire_transport2(mgr, type, remote, addr_len, sel, |
| NULL, tp); |
| } |
| |
| |
| /* |
| * pjsip_tpmgr_acquire_transport2() |
| * |
| * Get transport suitable to communicate to remote. Create a new one |
| * if necessary. |
| */ |
| PJ_DEF(pj_status_t) pjsip_tpmgr_acquire_transport2(pjsip_tpmgr *mgr, |
| pjsip_transport_type_e type, |
| const pj_sockaddr_t *remote, |
| int addr_len, |
| const pjsip_tpselector *sel, |
| pjsip_tx_data *tdata, |
| pjsip_transport **tp) |
| { |
| pjsip_tpfactory *factory; |
| pj_status_t status; |
| |
| TRACE_((THIS_FILE,"Acquiring transport type=%s, sel=%s remote=%s:%d", |
| pjsip_transport_get_type_name(type), |
| print_tpsel_info(sel), |
| addr_string(remote), |
| pj_sockaddr_get_port(remote))); |
| |
| pj_lock_acquire(mgr->lock); |
| |
| /* If transport is specified, then just use it if it is suitable |
| * for the destination. |
| */ |
| if (sel && sel->type == PJSIP_TPSELECTOR_TRANSPORT && |
| sel->u.transport) |
| { |
| pjsip_transport *seltp = sel->u.transport; |
| |
| pjsip_transport_type_e type_no_ipv6 = type % PJSIP_TRANSPORT_IPV6; |
| pjsip_transport_type_e key_type_no_ipv6 = seltp->key.type % |
| PJSIP_TRANSPORT_IPV6; |
| /* See if the transport is (not) suitable */ |
| if (seltp->key.type != type) { |
| pj_lock_release(mgr->lock); |
| TRACE_((THIS_FILE, "Transport type in tpsel not matched")); |
| return PJSIP_ETPNOTSUITABLE; |
| } |
| |
| /* Make sure the transport is not being destroyed */ |
| if (seltp->is_destroying) { |
| pj_lock_release(mgr->lock); |
| TRACE_((THIS_FILE,"Transport to be acquired is being destroyed")); |
| return PJ_ENOTFOUND; |
| } |
| |
| /* We could also verify that the destination address is reachable |
| * from this transport (i.e. both are equal), but if application |
| * has requested a specific transport to be used, assume that |
| * it knows what to do. |
| * |
| * In other words, I don't think destination verification is a good |
| * idea for now. |
| */ |
| |
| /* Transport looks to be suitable to use, so just use it. */ |
| pjsip_transport_add_ref(seltp); |
| pj_lock_release(mgr->lock); |
| *tp = seltp; |
| |
| TRACE_((THIS_FILE, "Transport %s acquired", seltp->obj_name)); |
| return PJ_SUCCESS; |
| |
| } else { |
| |
| /* |
| * This is the "normal" flow, where application doesn't specify |
| * specific transport to be used to send message to. |
| * In this case, lookup the transport from the hash table. |
| */ |
| pjsip_transport_key key; |
| int key_len; |
| pjsip_transport *tp_ref = NULL; |
| transport *tp_entry = NULL; |
| unsigned flag = pjsip_transport_get_flag_from_type(type); |
| |
| /* If listener is specified, verify that the listener type matches |
| * the destination type. |
| */ |
| if (sel && sel->type == PJSIP_TPSELECTOR_LISTENER && sel->u.listener) |
| { |
| if (sel->u.listener->type != type) { |
| pj_lock_release(mgr->lock); |
| TRACE_((THIS_FILE, "Listener type in tpsel not matched")); |
| return PJSIP_ETPNOTSUITABLE; |
| } |
| } |
| |
| if (!sel || sel->disable_connection_reuse == PJ_FALSE) { |
| pj_bzero(&key, sizeof(key)); |
| key_len = sizeof(key.type) + addr_len; |
| |
| /* First try to get exact destination. */ |
| key.type = type; |
| pj_memcpy(&key.rem_addr, remote, addr_len); |
| |
| tp_entry = (transport *)pj_hash_get(mgr->table, &key, key_len, |
| NULL); |
| if (tp_entry) { |
| transport *tp_iter = tp_entry; |
| do { |
| /* Don't use transport being shutdown/destroyed */ |
| if (!tp_iter->tp->is_shutdown && |
| !tp_iter->tp->is_destroying) |
| { |
| if ((flag & PJSIP_TRANSPORT_SECURE) && tdata) { |
| /* For secure transport, make sure tdata's |
| * destination host matches the transport's |
| * remote host. |
| */ |
| if (pj_stricmp(&tdata->dest_info.name, |
| &tp_iter->tp->remote_name.host)) |
| { |
| tp_iter = tp_iter->next; |
| continue; |
| } |
| } |
| |
| if (sel && sel->type == PJSIP_TPSELECTOR_LISTENER && |
| sel->u.listener) |
| { |
| /* Match listener if selector is set */ |
| if (tp_iter->tp->factory == sel->u.listener) { |
| tp_ref = tp_iter->tp; |
| break; |
| } |
| } else { |
| tp_ref = tp_iter->tp; |
| break; |
| } |
| } |
| tp_iter = tp_iter->next; |
| } while (tp_iter != tp_entry); |
| } |
| } |
| |
| if (tp_ref == NULL && |
| (!sel || sel->disable_connection_reuse == PJ_FALSE)) |
| { |
| const pj_sockaddr *remote_addr = (const pj_sockaddr*)remote; |
| |
| |
| /* Ignore address for loop transports. */ |
| if (type == PJSIP_TRANSPORT_LOOP || |
| type == PJSIP_TRANSPORT_LOOP_DGRAM) |
| { |
| pj_sockaddr *addr = &key.rem_addr; |
| |
| pj_bzero(addr, addr_len); |
| key_len = sizeof(key.type) + addr_len; |
| tp_entry = (transport *) pj_hash_get(mgr->table, &key, |
| key_len, NULL); |
| if (tp_entry) { |
| tp_ref = tp_entry->tp; |
| } |
| } |
| /* For datagram transports, try lookup with zero address. |
| */ |
| else if (flag & PJSIP_TRANSPORT_DATAGRAM) |
| { |
| pj_sockaddr *addr = &key.rem_addr; |
| |
| pj_bzero(addr, addr_len); |
| addr->addr.sa_family = remote_addr->addr.sa_family; |
| |
| key_len = sizeof(key.type) + addr_len; |
| tp_entry = (transport *) pj_hash_get(mgr->table, &key, |
| key_len, NULL); |
| |
| while (tp_entry) { |
| tp_ref = tp_entry->tp; |
| if (!tp_ref->is_shutdown && !tp_ref->is_destroying) |
| break; |
| tp_entry = tp_entry->next; |
| } |
| } |
| } |
| |
| /* If transport is found and listener is specified, verify listener */ |
| else if (sel && sel->type == PJSIP_TPSELECTOR_LISTENER && |
| sel->u.listener && tp_ref->factory != sel->u.listener) |
| { |
| tp_ref = NULL; |
| /* This will cause a new transport to be created which will be a |
| * 'duplicate' of the existing transport (same type & remote addr, |
| * but different factory). |
| */ |
| TRACE_((THIS_FILE, "Transport found but from different listener")); |
| } |
| |
| if (tp_ref!=NULL && !tp_ref->is_shutdown && !tp_ref->is_destroying) { |
| /* |
| * Transport found! |
| */ |
| pjsip_transport_add_ref(tp_ref); |
| pj_lock_release(mgr->lock); |
| *tp = tp_ref; |
| |
| TRACE_((THIS_FILE, "Transport %s acquired", tp_ref->obj_name)); |
| return PJ_SUCCESS; |
| } |
| |
| |
| /* |
| * Either transport not found, or we don't want to use the existing |
| * transport (such as in the case of different factory or |
| * if connection reuse is disabled). So we need to create one, |
| * find factory that can create such transport. |
| * |
| * If there's an existing transport, its place in the hash table |
| * will be replaced by this new one. And eventually the existing |
| * transport will still be freed (by application or #1774). |
| */ |
| if (sel && sel->type == PJSIP_TPSELECTOR_LISTENER && sel->u.listener) |
| { |
| /* Application has requested that a specific listener is to |
| * be used. |
| */ |
| |
| /* Verify that the listener type matches the destination type */ |
| /* Already checked above. */ |
| /* |
| if (sel->u.listener->type != type) { |
| pj_lock_release(mgr->lock); |
| return PJSIP_ETPNOTSUITABLE; |
| } |
| */ |
| |
| /* We'll use this listener to create transport */ |
| factory = sel->u.listener; |
| |
| /* Verify if listener is still valid */ |
| if (!pjsip_tpmgr_is_tpfactory_valid(mgr, factory)) { |
| pj_lock_release(mgr->lock); |
| PJ_LOG(3,(THIS_FILE, "Specified factory for creating " |
| "transport is not found")); |
| return PJ_ENOTFOUND; |
| } |
| |
| } else { |
| |
| /* Find factory with type matches the destination type */ |
| factory = mgr->factory_list.next; |
| while (factory != &mgr->factory_list) { |
| if (factory->type == type) |
| break; |
| factory = factory->next; |
| } |
| |
| if (factory == &mgr->factory_list) { |
| /* No factory can create the transport! */ |
| pj_lock_release(mgr->lock); |
| TRACE_((THIS_FILE, "No suitable factory was found either")); |
| return PJSIP_EUNSUPTRANSPORT; |
| } |
| } |
| } |
| |
| TRACE_((THIS_FILE, "Creating new transport from factory")); |
| |
| /* Request factory to create transport. */ |
| if (factory->create_transport2) { |
| status = factory->create_transport2(factory, mgr, mgr->endpt, |
| (const pj_sockaddr*) remote, |
| addr_len, tdata, tp); |
| } else { |
| status = factory->create_transport(factory, mgr, mgr->endpt, |
| (const pj_sockaddr*) remote, |
| addr_len, tp); |
| } |
| if (status == PJ_SUCCESS) { |
| PJ_ASSERT_ON_FAIL(tp!=NULL, |
| {pj_lock_release(mgr->lock); return PJ_EBUG;}); |
| pjsip_transport_add_ref(*tp); |
| (*tp)->factory = factory; |
| } |
| pj_lock_release(mgr->lock); |
| return status; |
| } |
| |
| /** |
| * Dump transport info. |
| */ |
| PJ_DEF(void) pjsip_tpmgr_dump_transports(pjsip_tpmgr *mgr) |
| { |
| #if PJ_LOG_MAX_LEVEL >= 3 |
| pj_hash_iterator_t itr_val; |
| pj_hash_iterator_t *itr; |
| pjsip_tpfactory *factory; |
| |
| pj_lock_acquire(mgr->lock); |
| |
| #if defined(PJ_DEBUG) && PJ_DEBUG!=0 |
| PJ_LOG(3,(THIS_FILE, " Outstanding transmit buffers: %d", |
| pj_atomic_get(mgr->tdata_counter))); |
| #endif |
| |
| PJ_LOG(3, (THIS_FILE, " Dumping listeners:")); |
| factory = mgr->factory_list.next; |
| while (factory != &mgr->factory_list) { |
| PJ_LOG(3, (THIS_FILE, " %s %s:%.*s:%d", |
| factory->obj_name, |
| factory->type_name, |
| (int)factory->addr_name.host.slen, |
| factory->addr_name.host.ptr, |
| (int)factory->addr_name.port)); |
| factory = factory->next; |
| } |
| |
| itr = pj_hash_first(mgr->table, &itr_val); |
| if (itr) { |
| PJ_LOG(3, (THIS_FILE, " Dumping transports:")); |
| |
| do { |
| transport *tp_entry = (transport *) pj_hash_this(mgr->table, itr); |
| if (tp_entry) { |
| transport *tp_iter = tp_entry; |
| |
| do { |
| pjsip_transport *tp_ref = tp_iter->tp; |
| |
| PJ_LOG(3, (THIS_FILE, " %s %s%s%s%s(refcnt=%d%s)", |
| tp_ref->obj_name, |
| tp_ref->info, |
| (tp_ref->factory)?" listener[":"", |
| (tp_ref->factory)?tp_ref->factory->obj_name:"", |
| (tp_ref->factory)?"]":"", |
| pj_atomic_get(tp_ref->ref_cnt), |
| (tp_ref->idle_timer.id ? " [idle]" : ""))); |
| |
| tp_iter = tp_iter->next; |
| } while (tp_iter != tp_entry); |
| } |
| itr = pj_hash_next(mgr->table, itr); |
| } while (itr); |
| } |
| |
| pj_lock_release(mgr->lock); |
| #else |
| PJ_UNUSED_ARG(mgr); |
| #endif |
| } |
| |
| /** |
| * Set callback of global transport state notification. |
| */ |
| PJ_DEF(pj_status_t) pjsip_tpmgr_set_state_cb(pjsip_tpmgr *mgr, |
| pjsip_tp_state_callback cb) |
| { |
| PJ_ASSERT_RETURN(mgr, PJ_EINVAL); |
| |
| mgr->tp_state_cb = cb; |
| |
| return PJ_SUCCESS; |
| } |
| |
| /** |
| * Get callback of global transport state notification. |
| */ |
| PJ_DEF(pjsip_tp_state_callback) pjsip_tpmgr_get_state_cb( |
| const pjsip_tpmgr *mgr) |
| { |
| PJ_ASSERT_RETURN(mgr, NULL); |
| |
| return mgr->tp_state_cb; |
| } |
| |
| |
| /** |
| * Allocate and init transport data. |
| */ |
| static void init_tp_data(pjsip_transport *tp) |
| { |
| transport_data *tp_data; |
| |
| pj_assert(tp && !tp->data); |
| |
| tp_data = PJ_POOL_ZALLOC_T(tp->pool, transport_data); |
| pj_list_init(&tp_data->st_listeners); |
| pj_list_init(&tp_data->st_listeners_empty); |
| tp->data = tp_data; |
| } |
| |
| |
| static void tp_state_callback(pjsip_transport *tp, |
| pjsip_transport_state state, |
| const pjsip_transport_state_info *info) |
| { |
| transport_data *tp_data; |
| |
| pj_lock_acquire(tp->lock); |
| |
| tp_data = (transport_data*)tp->data; |
| |
| /* Notify the transport state listeners, if any. */ |
| if (!tp_data || pj_list_empty(&tp_data->st_listeners)) { |
| goto on_return; |
| } else { |
| pjsip_transport_state_info st_info; |
| tp_state_listener *st_listener = tp_data->st_listeners.next; |
| |
| /* As we need to put the user data into the transport state info, |
| * let's use a copy of transport state info. |
| */ |
| pj_memcpy(&st_info, info, sizeof(st_info)); |
| while (st_listener != &tp_data->st_listeners) { |
| st_info.user_data = st_listener->user_data; |
| (*st_listener->cb)(tp, state, &st_info); |
| |
| st_listener = st_listener->next; |
| } |
| } |
| |
| on_return: |
| pj_lock_release(tp->lock); |
| } |
| |
| |
| /** |
| * Add a listener to the specified transport for transport state notification. |
| */ |
| PJ_DEF(pj_status_t) pjsip_transport_add_state_listener ( |
| pjsip_transport *tp, |
| pjsip_tp_state_callback cb, |
| void *user_data, |
| pjsip_tp_state_listener_key **key) |
| { |
| transport_data *tp_data; |
| tp_state_listener *entry; |
| |
| PJ_ASSERT_RETURN(tp && cb && key, PJ_EINVAL); |
| |
| if (tp->is_shutdown || tp->is_destroying) { |
| *key = NULL; |
| return PJ_EINVALIDOP; |
| } |
| |
| pj_lock_acquire(tp->lock); |
| |
| /* Init transport data, if it hasn't */ |
| if (!tp->data) |
| init_tp_data(tp); |
| |
| tp_data = (transport_data*)tp->data; |
| |
| /* Init the new listener entry. Use available empty slot, if any, |
| * otherwise allocate it using the transport pool. |
| */ |
| if (!pj_list_empty(&tp_data->st_listeners_empty)) { |
| entry = tp_data->st_listeners_empty.next; |
| pj_list_erase(entry); |
| } else { |
| entry = PJ_POOL_ZALLOC_T(tp->pool, tp_state_listener); |
| } |
| entry->cb = cb; |
| entry->user_data = user_data; |
| |
| /* Add the new listener entry to the listeners list */ |
| pj_list_push_back(&tp_data->st_listeners, entry); |
| |
| *key = entry; |
| |
| pj_lock_release(tp->lock); |
| |
| return PJ_SUCCESS; |
| } |
| |
| /** |
| * Remove a listener from the specified transport for transport state |
| * notification. |
| */ |
| PJ_DEF(pj_status_t) pjsip_transport_remove_state_listener ( |
| pjsip_transport *tp, |
| pjsip_tp_state_listener_key *key, |
| const void *user_data) |
| { |
| transport_data *tp_data; |
| tp_state_listener *entry; |
| |
| PJ_ASSERT_RETURN(tp && key, PJ_EINVAL); |
| |
| pj_lock_acquire(tp->lock); |
| |
| tp_data = (transport_data*)tp->data; |
| |
| /* Transport data is NULL or no registered listener? */ |
| if (!tp_data || pj_list_empty(&tp_data->st_listeners)) { |
| pj_lock_release(tp->lock); |
| return PJ_ENOTFOUND; |
| } |
| |
| entry = (tp_state_listener*)key; |
| |
| /* Validate the user data */ |
| if (entry->user_data != user_data) { |
| pj_assert(!"Invalid transport state listener key"); |
| pj_lock_release(tp->lock); |
| return PJ_EBUG; |
| } |
| |
| /* Reset the entry and move it to the empty list */ |
| entry->cb = NULL; |
| entry->user_data = NULL; |
| pj_list_erase(entry); |
| pj_list_push_back(&tp_data->st_listeners_empty, entry); |
| |
| pj_lock_release(tp->lock); |
| |
| return PJ_SUCCESS; |
| } |
| |
| /* |
| * Set callback of data dropping. |
| */ |
| PJ_DEF(pj_status_t) pjsip_tpmgr_set_drop_data_cb(pjsip_tpmgr *mgr, |
| pjsip_tp_on_rx_dropped_cb cb) |
| { |
| PJ_ASSERT_RETURN(mgr, PJ_EINVAL); |
| |
| mgr->tp_drop_data_cb = cb; |
| |
| return PJ_SUCCESS; |
| } |