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/* $Id: sip_transport.c 4775 2014-03-04 02:18:51Z nanang $ */
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* Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com)
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* Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org>
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#include <pjsip/sip_transport.h>
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#include <pjsip/sip_endpoint.h>
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#include <pjsip/sip_parser.h>
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#include <pjsip/sip_msg.h>
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#include <pjsip/sip_private.h>
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#include <pjsip/sip_errno.h>
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#include <pjsip/sip_module.h>
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#include <pj/addr_resolv.h>
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#include <pj/except.h>
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#include <pj/ioqueue.h>
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#include <pj/string.h>
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#include <pj/assert.h>
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#define THIS_FILE "sip_transport.c"
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# define TRACE_(x) PJ_LOG(5,x)
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static const char *addr_string(const pj_sockaddr_t *addr)
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static char str[PJ_INET6_ADDRSTRLEN];
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pj_inet_ntop(((const pj_sockaddr*)addr)->addr.sa_family,
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pj_sockaddr_get_addr(addr),
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static pj_status_t mod_on_tx_msg(pjsip_tx_data *tdata);
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/* This module has sole purpose to print transmit data to contigous buffer
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* before actually transmitted to the wire.
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static pjsip_module mod_msg_print =
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NULL, NULL, /* prev and next */
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{ "mod-msg-print", 13}, /* Name. */
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PJSIP_MOD_PRIORITY_TRANSPORT_LAYER, /* Priority */
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NULL, /* on_rx_request() */
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NULL, /* on_rx_response() */
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&mod_on_tx_msg, /* on_tx_request() */
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&mod_on_tx_msg, /* on_tx_response() */
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NULL, /* on_tsx_state() */
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pj_hash_table_t *table;
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pjsip_endpoint *endpt;
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pjsip_tpfactory factory_list;
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#if defined(PJ_DEBUG) && PJ_DEBUG!=0
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pj_atomic_t *tdata_counter;
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void (*on_rx_msg)(pjsip_endpoint*, pj_status_t, pjsip_rx_data*);
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pj_status_t (*on_tx_msg)(pjsip_endpoint*, pjsip_tx_data*);
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pjsip_tp_state_callback tp_state_cb;
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/* Transmit data list, for transmit data cleanup when transport manager
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pjsip_tx_data tdata_list;
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/* Transport state listener list type */
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typedef struct tp_state_listener
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PJ_DECL_LIST_MEMBER(struct tp_state_listener);
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pjsip_tp_state_callback cb;
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typedef struct transport_data
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/* Transport listeners */
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tp_state_listener st_listeners;
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tp_state_listener st_listeners_empty;
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/*****************************************************************************
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* GENERAL TRANSPORT (NAMES, TYPES, ETC.)
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*****************************************************************************/
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static struct transport_names_t
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pjsip_transport_type_e type; /* Transport type */
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pj_uint16_t port; /* Default port number */
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pj_str_t name; /* Id tag */
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const char *description; /* Longer description */
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unsigned flag; /* Flags */
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char name_buf[16]; /* For user's transport */
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} transport_names[16] =
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PJSIP_TRANSPORT_UNSPECIFIED,
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PJSIP_TRANSPORT_DATAGRAM
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PJSIP_TRANSPORT_RELIABLE
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PJSIP_TRANSPORT_RELIABLE | PJSIP_TRANSPORT_SECURE
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PJSIP_TRANSPORT_SCTP,
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PJSIP_TRANSPORT_RELIABLE
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PJSIP_TRANSPORT_LOOP,
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"Loopback transport",
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PJSIP_TRANSPORT_RELIABLE
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PJSIP_TRANSPORT_LOOP_DGRAM,
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"Loopback datagram transport",
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PJSIP_TRANSPORT_DATAGRAM
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PJSIP_TRANSPORT_UDP6,
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"UDP IPv6 transport",
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PJSIP_TRANSPORT_DATAGRAM
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PJSIP_TRANSPORT_TCP6,
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"TCP IPv6 transport",
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PJSIP_TRANSPORT_RELIABLE
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PJSIP_TRANSPORT_TLS6,
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"TLS IPv6 transport",
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PJSIP_TRANSPORT_RELIABLE | PJSIP_TRANSPORT_SECURE
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static void tp_state_callback(pjsip_transport *tp,
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pjsip_transport_state state,
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const pjsip_transport_state_info *info);
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static struct transport_names_t *get_tpname(pjsip_transport_type_e type)
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for (i=0; i<PJ_ARRAY_SIZE(transport_names); ++i) {
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if (transport_names[i].type == type)
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return &transport_names[i];
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pj_assert(!"Invalid transport type!");
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* Register new transport type to PJSIP.
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PJ_DEF(pj_status_t) pjsip_transport_register_type( unsigned tp_flag,
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PJ_ASSERT_RETURN(tp_flag && tp_name && def_port, PJ_EINVAL);
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PJ_ASSERT_RETURN(pj_ansi_strlen(tp_name) <
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PJ_ARRAY_SIZE(transport_names[0].name_buf),
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for (i=1; i<PJ_ARRAY_SIZE(transport_names); ++i) {
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if (transport_names[i].type == 0)
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if (i == PJ_ARRAY_SIZE(transport_names))
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transport_names[i].type = (pjsip_transport_type_e)i;
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transport_names[i].port = (pj_uint16_t)def_port;
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pj_ansi_strcpy(transport_names[i].name_buf, tp_name);
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transport_names[i].name = pj_str(transport_names[i].name_buf);
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transport_names[i].flag = tp_flag;
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* Get transport type from name.
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PJ_DEF(pjsip_transport_type_e) pjsip_transport_get_type_from_name(const pj_str_t *name)
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return PJSIP_TRANSPORT_UNSPECIFIED;
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/* Get transport type from name. */
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for (i=0; i<PJ_ARRAY_SIZE(transport_names); ++i) {
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if (pj_stricmp(name, &transport_names[i].name) == 0) {
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return transport_names[i].type;
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pj_assert(!"Invalid transport name");
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return PJSIP_TRANSPORT_UNSPECIFIED;
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* Get the transport type for the specified flags.
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PJ_DEF(pjsip_transport_type_e) pjsip_transport_get_type_from_flag(unsigned flag)
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/* Get the transport type for the specified flags. */
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for (i=0; i<PJ_ARRAY_SIZE(transport_names); ++i) {
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if (transport_names[i].flag == flag) {
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return transport_names[i].type;
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pj_assert(!"Invalid transport type");
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return PJSIP_TRANSPORT_UNSPECIFIED;
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* Get the socket address family of a given transport type.
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PJ_DEF(int) pjsip_transport_type_get_af(pjsip_transport_type_e type)
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if (type & PJSIP_TRANSPORT_IPV6)
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return pj_AF_INET6();
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PJ_DEF(unsigned) pjsip_transport_get_flag_from_type(pjsip_transport_type_e type)
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/* Return transport flag. */
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return get_tpname(type)->flag;
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* Get the default SIP port number for the specified type.
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PJ_DEF(int) pjsip_transport_get_default_port_for_type(pjsip_transport_type_e type)
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/* Return the port. */
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return get_tpname(type)->port;
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* Get transport name.
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PJ_DEF(const char*) pjsip_transport_get_type_name(pjsip_transport_type_e type)
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/* Return the name. */
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return get_tpname(type)->name.ptr;
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* Get transport description.
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PJ_DEF(const char*) pjsip_transport_get_type_desc(pjsip_transport_type_e type)
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/* Return the description. */
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return get_tpname(type)->description;
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/*****************************************************************************
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*****************************************************************************/
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* Add transport/listener reference in the selector.
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PJ_DEF(void) pjsip_tpselector_add_ref(pjsip_tpselector *sel)
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if (sel->type == PJSIP_TPSELECTOR_TRANSPORT && sel->u.transport != NULL)
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pjsip_transport_add_ref(sel->u.transport);
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else if (sel->type == PJSIP_TPSELECTOR_LISTENER && sel->u.listener != NULL)
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; /* Hmm.. looks like we don't have reference counter for listener */
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* Decrement transport/listener reference in the selector.
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PJ_DEF(void) pjsip_tpselector_dec_ref(pjsip_tpselector *sel)
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if (sel->type == PJSIP_TPSELECTOR_TRANSPORT && sel->u.transport != NULL)
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pjsip_transport_dec_ref(sel->u.transport);
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else if (sel->type == PJSIP_TPSELECTOR_LISTENER && sel->u.listener != NULL)
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; /* Hmm.. looks like we don't have reference counter for listener */
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/*****************************************************************************
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* TRANSMIT DATA BUFFER MANIPULATION.
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*****************************************************************************/
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* Create new transmit buffer.
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PJ_DEF(pj_status_t) pjsip_tx_data_create( pjsip_tpmgr *mgr,
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pjsip_tx_data **p_tdata )
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pjsip_tx_data *tdata;
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PJ_ASSERT_RETURN(mgr && p_tdata, PJ_EINVAL);
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pool = pjsip_endpt_create_pool( mgr->endpt, "tdta%p",
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PJSIP_POOL_LEN_TDATA,
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PJSIP_POOL_INC_TDATA );
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tdata = PJ_POOL_ZALLOC_T(pool, pjsip_tx_data);
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pj_memcpy(tdata->obj_name, pool->obj_name, PJ_MAX_OBJ_NAME);
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status = pj_atomic_create(tdata->pool, 0, &tdata->ref_cnt);
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if (status != PJ_SUCCESS) {
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pjsip_endpt_release_pool( mgr->endpt, tdata->pool );
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//status = pj_lock_create_simple_mutex(pool, "tdta%p", &tdata->lock);
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status = pj_lock_create_null_mutex(pool, "tdta%p", &tdata->lock);
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if (status != PJ_SUCCESS) {
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pjsip_endpt_release_pool( mgr->endpt, tdata->pool );
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pj_ioqueue_op_key_init(&tdata->op_key.key, sizeof(tdata->op_key.key));
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#if defined(PJSIP_HAS_TX_DATA_LIST) && PJSIP_HAS_TX_DATA_LIST!=0
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/* Append this just created tdata to transmit buffer list */
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pj_lock_acquire(mgr->lock);
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pj_list_push_back(&mgr->tdata_list, tdata);
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pj_lock_release(mgr->lock);
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#if defined(PJ_DEBUG) && PJ_DEBUG!=0
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pj_atomic_inc( tdata->mgr->tdata_counter );
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* Add reference to tx buffer.
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PJ_DEF(void) pjsip_tx_data_add_ref( pjsip_tx_data *tdata )
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pj_atomic_inc(tdata->ref_cnt);
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static void tx_data_destroy(pjsip_tx_data *tdata)
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PJ_LOG(5,(tdata->obj_name, "Destroying txdata %s",
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pjsip_tx_data_get_info(tdata)));
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pjsip_tpselector_dec_ref(&tdata->tp_sel);
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#if defined(PJ_DEBUG) && PJ_DEBUG!=0
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pj_atomic_dec( tdata->mgr->tdata_counter );
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#if defined(PJSIP_HAS_TX_DATA_LIST) && PJSIP_HAS_TX_DATA_LIST!=0
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/* Remove this tdata from transmit buffer list */
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pj_lock_acquire(tdata->mgr->lock);
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pj_list_erase(tdata);
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pj_lock_release(tdata->mgr->lock);
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pj_atomic_destroy( tdata->ref_cnt );
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pj_lock_destroy( tdata->lock );
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pjsip_endpt_release_pool( tdata->mgr->endpt, tdata->pool );
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* Decrease transport data reference, destroy it when the reference count
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PJ_DEF(pj_status_t) pjsip_tx_data_dec_ref( pjsip_tx_data *tdata )
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pj_assert( pj_atomic_get(tdata->ref_cnt) > 0);
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if (pj_atomic_dec_and_get(tdata->ref_cnt) <= 0) {
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tx_data_destroy(tdata);
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return PJSIP_EBUFDESTROYED;
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* Invalidate the content of the print buffer to force the message to be
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* re-printed when sent.
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PJ_DEF(void) pjsip_tx_data_invalidate_msg( pjsip_tx_data *tdata )
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tdata->buf.cur = tdata->buf.start;
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* Print the SIP message to transmit data buffer's internal buffer.
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PJ_DEF(pj_status_t) pjsip_tx_data_encode(pjsip_tx_data *tdata)
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/* Allocate buffer if necessary. */
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if (tdata->buf.start == NULL) {
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tdata->buf.start = (char*)
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pj_pool_alloc(tdata->pool, PJSIP_MAX_PKT_LEN);
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tdata->buf.cur = tdata->buf.start;
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tdata->buf.end = tdata->buf.start + PJSIP_MAX_PKT_LEN;
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/* Do we need to reprint? */
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if (!pjsip_tx_data_is_valid(tdata)) {
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size = pjsip_msg_print( tdata->msg, tdata->buf.start,
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tdata->buf.end - tdata->buf.start);
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return PJSIP_EMSGTOOLONG;
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pj_assert(size != 0);
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tdata->buf.cur[size] = '\0';
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tdata->buf.cur += size;
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PJ_DEF(pj_bool_t) pjsip_tx_data_is_valid( pjsip_tx_data *tdata )
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return tdata->buf.cur != tdata->buf.start;
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static char *get_msg_info(pj_pool_t *pool, const char *obj_name,
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const pjsip_msg *msg)
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char info_buf[128], *info;
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const pjsip_cseq_hdr *cseq;
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cseq = (const pjsip_cseq_hdr*) pjsip_msg_find_hdr(msg, PJSIP_H_CSEQ, NULL);
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PJ_ASSERT_RETURN(cseq != NULL, "INVALID MSG");
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if (msg->type == PJSIP_REQUEST_MSG) {
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len = pj_ansi_snprintf(info_buf, sizeof(info_buf),
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"Request msg %.*s/cseq=%d (%s)",
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(int)msg->line.req.method.name.slen,
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msg->line.req.method.name.ptr,
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cseq->cseq, obj_name);
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len = pj_ansi_snprintf(info_buf, sizeof(info_buf),
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"Response msg %d/%.*s/cseq=%d (%s)",
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msg->line.status.code,
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(int)cseq->method.name.slen,
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cseq->method.name.ptr,
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cseq->cseq, obj_name);
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if (len < 1 || len >= (int)sizeof(info_buf)) {
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return (char*)obj_name;
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info = (char*) pj_pool_alloc(pool, len+1);
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pj_memcpy(info, info_buf, len+1);
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PJ_DEF(char*) pjsip_tx_data_get_info( pjsip_tx_data *tdata )
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PJ_ASSERT_RETURN(tdata, "NULL");
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/* tdata->info may be assigned by application so if it exists
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if (tdata->msg==NULL)
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pj_lock_acquire(tdata->lock);
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tdata->info = get_msg_info(tdata->pool, tdata->obj_name, tdata->msg);
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pj_lock_release(tdata->lock);
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PJ_DEF(pj_status_t) pjsip_tx_data_set_transport(pjsip_tx_data *tdata,
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const pjsip_tpselector *sel)
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PJ_ASSERT_RETURN(tdata && sel, PJ_EINVAL);
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pj_lock_acquire(tdata->lock);
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pjsip_tpselector_dec_ref(&tdata->tp_sel);
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pj_memcpy(&tdata->tp_sel, sel, sizeof(*sel));
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pjsip_tpselector_add_ref(&tdata->tp_sel);
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pj_lock_release(tdata->lock);
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PJ_DEF(char*) pjsip_rx_data_get_info(pjsip_rx_data *rdata)
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char obj_name[PJ_MAX_OBJ_NAME];
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PJ_ASSERT_RETURN(rdata->msg_info.msg, "INVALID MSG");
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if (rdata->msg_info.info)
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return rdata->msg_info.info;
625
pj_ansi_strcpy(obj_name, "rdata");
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pj_ansi_snprintf(obj_name+5, sizeof(obj_name)-5, "%p", rdata);
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rdata->msg_info.info = get_msg_info(rdata->tp_info.pool, obj_name,
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rdata->msg_info.msg);
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return rdata->msg_info.info;
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/* Clone pjsip_rx_data. */
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PJ_DEF(pj_status_t) pjsip_rx_data_clone( const pjsip_rx_data *src,
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pjsip_rx_data **p_rdata)
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PJ_ASSERT_RETURN(src && flags==0 && p_rdata, PJ_EINVAL);
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pool = pj_pool_create(src->tp_info.pool->factory,
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PJSIP_POOL_RDATA_LEN,
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PJSIP_POOL_RDATA_INC,
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dst = PJ_POOL_ZALLOC_T(pool, pjsip_rx_data);
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/* Parts of tp_info */
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dst->tp_info.pool = pool;
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dst->tp_info.transport = (pjsip_transport*)src->tp_info.transport;
658
/* pkt_info can be memcopied */
659
pj_memcpy(&dst->pkt_info, &src->pkt_info, sizeof(src->pkt_info));
661
/* msg_info needs deep clone */
662
dst->msg_info.msg_buf = dst->pkt_info.packet;
663
dst->msg_info.len = src->msg_info.len;
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dst->msg_info.msg = pjsip_msg_clone(pool, src->msg_info.msg);
665
pj_list_init(&dst->msg_info.parse_err);
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#define GET_MSG_HDR2(TYPE, type, var) \
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case PJSIP_H_##TYPE: \
669
if (!dst->msg_info.var) { \
670
dst->msg_info.var = (pjsip_##type##_hdr*)hdr; \
673
#define GET_MSG_HDR(TYPE, var_type) GET_MSG_HDR2(TYPE, var_type, var_type)
675
hdr = dst->msg_info.msg->hdr.next;
676
while (hdr != &dst->msg_info.msg->hdr) {
678
GET_MSG_HDR(CALL_ID, cid);
679
GET_MSG_HDR(FROM, from);
681
GET_MSG_HDR(VIA, via);
682
GET_MSG_HDR(CSEQ, cseq);
683
GET_MSG_HDR(MAX_FORWARDS, max_fwd);
684
GET_MSG_HDR(ROUTE, route);
685
GET_MSG_HDR2(RECORD_ROUTE, rr, record_route);
686
GET_MSG_HDR(CONTENT_TYPE, ctype);
687
GET_MSG_HDR(CONTENT_LENGTH, clen);
688
GET_MSG_HDR(REQUIRE, require);
689
GET_MSG_HDR(SUPPORTED, supported);
701
/* Finally add transport ref */
702
return pjsip_transport_add_ref(dst->tp_info.transport);
705
/* Free previously cloned pjsip_rx_data. */
706
PJ_DEF(pj_status_t) pjsip_rx_data_free_cloned(pjsip_rx_data *rdata)
708
PJ_ASSERT_RETURN(rdata, PJ_EINVAL);
710
pjsip_transport_dec_ref(rdata->tp_info.transport);
711
pj_pool_release(rdata->tp_info.pool);
716
/*****************************************************************************
720
*****************************************************************************/
723
/*****************************************************************************
727
*****************************************************************************/
729
static void transport_send_callback(pjsip_transport *transport,
733
pjsip_tx_data *tdata = (pjsip_tx_data*) token;
735
PJ_UNUSED_ARG(transport);
737
/* Mark pending off so that app can resend/reuse txdata from inside
740
tdata->is_pending = 0;
742
/* Call callback, if any. */
744
(*tdata->cb)(tdata->token, tdata, size);
747
/* Decrement reference count. */
748
pjsip_tx_data_dec_ref(tdata);
751
/* This function is called by endpoint for on_tx_request() and on_tx_response()
754
static pj_status_t mod_on_tx_msg(pjsip_tx_data *tdata)
756
return pjsip_tx_data_encode(tdata);
760
* Send a SIP message using the specified transport.
762
PJ_DEF(pj_status_t) pjsip_transport_send( pjsip_transport *tr,
763
pjsip_tx_data *tdata,
764
const pj_sockaddr_t *addr,
767
pjsip_tp_send_callback cb)
771
PJ_ASSERT_RETURN(tr && tdata && addr, PJ_EINVAL);
773
/* Is it currently being sent? */
774
if (tdata->is_pending) {
775
pj_assert(!"Invalid operation step!");
776
PJ_LOG(2,(THIS_FILE, "Unable to send %s: message is pending",
777
pjsip_tx_data_get_info(tdata)));
778
return PJSIP_EPENDINGTX;
781
/* Add reference to prevent deletion, and to cancel idle timer if
784
pjsip_transport_add_ref(tr);
786
/* Fill in tp_info. */
787
tdata->tp_info.transport = tr;
788
pj_memcpy(&tdata->tp_info.dst_addr, addr, addr_len);
789
tdata->tp_info.dst_addr_len = addr_len;
791
pj_inet_ntop(((pj_sockaddr*)addr)->addr.sa_family,
792
pj_sockaddr_get_addr(addr),
793
tdata->tp_info.dst_name,
794
sizeof(tdata->tp_info.dst_name));
795
tdata->tp_info.dst_port = pj_sockaddr_get_port(addr);
797
/* Distribute to modules.
798
* When the message reach mod_msg_print, the contents of the message will
799
* be "printed" to contiguous buffer.
801
if (tr->tpmgr->on_tx_msg) {
802
status = (*tr->tpmgr->on_tx_msg)(tr->endpt, tdata);
803
if (status != PJ_SUCCESS) {
804
pjsip_transport_dec_ref(tr);
809
/* Save callback data. */
810
tdata->token = token;
813
/* Add reference counter. */
814
pjsip_tx_data_add_ref(tdata);
816
/* Mark as pending. */
817
tdata->is_pending = 1;
819
/* Send to transport. */
820
status = (*tr->send_msg)(tr, tdata, addr, addr_len, (void*)tdata,
821
&transport_send_callback);
823
if (status != PJ_EPENDING) {
824
tdata->is_pending = 0;
825
pjsip_tx_data_dec_ref(tdata);
828
pjsip_transport_dec_ref(tr);
833
/* send_raw() callback */
834
static void send_raw_callback(pjsip_transport *transport,
838
pjsip_tx_data *tdata = (pjsip_tx_data*) token;
840
/* Mark pending off so that app can resend/reuse txdata from inside
843
tdata->is_pending = 0;
845
/* Call callback, if any. */
847
(*tdata->cb)(tdata->token, tdata, size);
850
/* Decrement tdata reference count. */
851
pjsip_tx_data_dec_ref(tdata);
853
/* Decrement transport reference count */
854
pjsip_transport_dec_ref(transport);
859
PJ_DEF(pj_status_t) pjsip_tpmgr_send_raw(pjsip_tpmgr *mgr,
860
pjsip_transport_type_e tp_type,
861
const pjsip_tpselector *sel,
862
pjsip_tx_data *tdata,
863
const void *raw_data,
865
const pj_sockaddr_t *addr,
868
pjsip_tp_send_callback cb)
873
/* Acquire the transport */
874
status = pjsip_tpmgr_acquire_transport(mgr, tp_type, addr, addr_len,
876
if (status != PJ_SUCCESS)
879
/* Create transmit data buffer if one is not specified */
881
status = pjsip_endpt_create_tdata(tr->endpt, &tdata);
882
if (status != PJ_SUCCESS) {
883
pjsip_transport_dec_ref(tr);
889
/* Add reference counter. */
890
pjsip_tx_data_add_ref(tdata);
893
/* Allocate buffer */
894
if (tdata->buf.start == NULL ||
895
(tdata->buf.end - tdata->buf.start) < (int)data_len)
897
/* Note: data_len may be zero, so allocate +1 */
898
tdata->buf.start = (char*) pj_pool_alloc(tdata->pool, data_len+1);
899
tdata->buf.end = tdata->buf.start + data_len + 1;
902
/* Copy data, if any! (application may send zero len packet) */
904
pj_memcpy(tdata->buf.start, raw_data, data_len);
906
tdata->buf.cur = tdata->buf.start + data_len;
908
/* Save callback data. */
909
tdata->token = token;
912
/* Mark as pending. */
913
tdata->is_pending = 1;
915
/* Send to transport */
916
status = tr->send_msg(tr, tdata, addr, addr_len,
917
tdata, &send_raw_callback);
919
if (status != PJ_EPENDING) {
920
/* callback will not be called, so destroy tdata now. */
921
pjsip_tx_data_dec_ref(tdata);
922
pjsip_transport_dec_ref(tr);
929
static void transport_idle_callback(pj_timer_heap_t *timer_heap,
930
struct pj_timer_entry *entry)
932
pjsip_transport *tp = (pjsip_transport*) entry->user_data;
933
pj_assert(tp != NULL);
935
PJ_UNUSED_ARG(timer_heap);
937
entry->id = PJ_FALSE;
938
pjsip_transport_destroy(tp);
944
PJ_DEF(pj_status_t) pjsip_transport_add_ref( pjsip_transport *tp )
946
PJ_ASSERT_RETURN(tp != NULL, PJ_EINVAL);
948
if (pj_atomic_inc_and_get(tp->ref_cnt) == 1) {
949
pj_lock_acquire(tp->tpmgr->lock);
951
if (pj_atomic_get(tp->ref_cnt) == 1) {
952
if (tp->idle_timer.id != PJ_FALSE) {
953
pjsip_endpt_cancel_timer(tp->tpmgr->endpt, &tp->idle_timer);
954
tp->idle_timer.id = PJ_FALSE;
957
pj_lock_release(tp->tpmgr->lock);
966
PJ_DEF(pj_status_t) pjsip_transport_dec_ref( pjsip_transport *tp )
968
PJ_ASSERT_RETURN(tp != NULL, PJ_EINVAL);
970
pj_assert(pj_atomic_get(tp->ref_cnt) > 0);
972
if (pj_atomic_dec_and_get(tp->ref_cnt) == 0) {
973
pj_lock_acquire(tp->tpmgr->lock);
974
/* Verify again. Do not register timer if the transport is
977
if (pj_atomic_get(tp->ref_cnt) == 0 && !tp->is_destroying) {
980
/* If transport is in graceful shutdown, then this is the
981
* last user who uses the transport. Schedule to destroy the
982
* transport immediately. Otherwise schedule idle timer.
984
if (tp->is_shutdown) {
985
delay.sec = delay.msec = 0;
987
delay.sec = (tp->dir==PJSIP_TP_DIR_OUTGOING) ?
988
PJSIP_TRANSPORT_IDLE_TIME :
989
PJSIP_TRANSPORT_SERVER_IDLE_TIME;
993
pj_assert(tp->idle_timer.id == 0);
994
tp->idle_timer.id = PJ_TRUE;
995
pjsip_endpt_schedule_timer(tp->tpmgr->endpt, &tp->idle_timer,
998
pj_lock_release(tp->tpmgr->lock);
1006
* Register a transport.
1008
PJ_DEF(pj_status_t) pjsip_transport_register( pjsip_tpmgr *mgr,
1009
pjsip_transport *tp )
1017
pj_bzero(&tp->idle_timer, sizeof(tp->idle_timer));
1018
tp->idle_timer.user_data = tp;
1019
tp->idle_timer.cb = &transport_idle_callback;
1022
* Register to hash table (see Trac ticket #42).
1024
key_len = sizeof(tp->key.type) + tp->addr_len;
1025
pj_lock_acquire(mgr->lock);
1027
/* If entry already occupied, unregister previous entry */
1029
entry = pj_hash_get(mgr->table, &tp->key, key_len, &hval);
1031
pj_hash_set(NULL, mgr->table, &tp->key, key_len, hval, NULL);
1033
/* Register new entry */
1034
pj_hash_set(tp->pool, mgr->table, &tp->key, key_len, hval, tp);
1036
pj_lock_release(mgr->lock);
1038
TRACE_((THIS_FILE,"Transport %s registered: type=%s, remote=%s:%d",
1040
pjsip_transport_get_type_name(tp->key.type),
1041
addr_string(&tp->key.rem_addr),
1042
pj_sockaddr_get_port(&tp->key.rem_addr)));
1047
/* Force destroy transport (e.g. during transport manager shutdown. */
1048
static pj_status_t destroy_transport( pjsip_tpmgr *mgr,
1049
pjsip_transport *tp )
1055
TRACE_((THIS_FILE, "Transport %s is being destroyed", tp->obj_name));
1057
pj_lock_acquire(tp->lock);
1058
pj_lock_acquire(mgr->lock);
1060
tp->is_destroying = PJ_TRUE;
1063
* Unregister timer, if any.
1065
//pj_assert(tp->idle_timer.id == PJ_FALSE);
1066
if (tp->idle_timer.id != PJ_FALSE) {
1067
pjsip_endpt_cancel_timer(mgr->endpt, &tp->idle_timer);
1068
tp->idle_timer.id = PJ_FALSE;
1072
* Unregister from hash table (see Trac ticket #42).
1074
key_len = sizeof(tp->key.type) + tp->addr_len;
1076
entry = pj_hash_get(mgr->table, &tp->key, key_len, &hval);
1077
if (entry == (void*)tp)
1078
pj_hash_set(NULL, mgr->table, &tp->key, key_len, hval, NULL);
1080
pj_lock_release(mgr->lock);
1083
return tp->destroy(tp);
1088
* Start graceful shutdown procedure for this transport.
1090
PJ_DEF(pj_status_t) pjsip_transport_shutdown(pjsip_transport *tp)
1094
pjsip_tp_state_callback state_cb;
1096
TRACE_((THIS_FILE, "Transport %s shutting down", tp->obj_name));
1098
pj_lock_acquire(tp->lock);
1101
pj_lock_acquire(mgr->lock);
1103
/* Do nothing if transport is being shutdown already */
1104
if (tp->is_shutdown) {
1105
pj_lock_release(tp->lock);
1106
pj_lock_release(mgr->lock);
1110
status = PJ_SUCCESS;
1112
/* Instruct transport to shutdown itself */
1113
if (tp->do_shutdown)
1114
status = tp->do_shutdown(tp);
1116
/* Notify application of transport shutdown */
1117
state_cb = pjsip_tpmgr_get_state_cb(tp->tpmgr);
1119
pjsip_transport_state_info state_info;
1121
pj_bzero(&state_info, sizeof(state_info));
1122
state_info.status = status;
1123
(*state_cb)(tp, PJSIP_TP_STATE_SHUTDOWN, &state_info);
1126
if (status == PJ_SUCCESS)
1127
tp->is_shutdown = PJ_TRUE;
1129
/* If transport reference count is zero, start timer count-down */
1130
if (pj_atomic_get(tp->ref_cnt) == 0) {
1131
pjsip_transport_add_ref(tp);
1132
pjsip_transport_dec_ref(tp);
1135
pj_lock_release(tp->lock);
1136
pj_lock_release(mgr->lock);
1143
* Unregister transport.
1145
PJ_DEF(pj_status_t) pjsip_transport_destroy( pjsip_transport *tp)
1147
pjsip_tp_state_callback state_cb;
1149
/* Must have no user. */
1150
PJ_ASSERT_RETURN(pj_atomic_get(tp->ref_cnt) == 0, PJSIP_EBUSY);
1152
/* Notify application of transport destroy */
1153
state_cb = pjsip_tpmgr_get_state_cb(tp->tpmgr);
1155
pjsip_transport_state_info state_info;
1157
pj_bzero(&state_info, sizeof(state_info));
1158
(*state_cb)(tp, PJSIP_TP_STATE_DESTROY, &state_info);
1162
return destroy_transport(tp->tpmgr, tp);
1167
/*****************************************************************************
1171
*****************************************************************************/
1174
PJ_DEF(pj_status_t) pjsip_tpmgr_register_tpfactory( pjsip_tpmgr *mgr,
1175
pjsip_tpfactory *tpf)
1180
pj_lock_acquire(mgr->lock);
1182
/* Check that no factory with the same type has been registered. */
1183
status = PJ_SUCCESS;
1184
for (p=mgr->factory_list.next; p!=&mgr->factory_list; p=p->next) {
1185
if (p->type == tpf->type) {
1186
status = PJSIP_ETYPEEXISTS;
1190
status = PJ_EEXISTS;
1195
if (status != PJ_SUCCESS) {
1196
pj_lock_release(mgr->lock);
1200
pj_list_insert_before(&mgr->factory_list, tpf);
1202
pj_lock_release(mgr->lock);
1209
* Unregister factory.
1211
PJ_DEF(pj_status_t) pjsip_tpmgr_unregister_tpfactory( pjsip_tpmgr *mgr,
1212
pjsip_tpfactory *tpf)
1214
pj_lock_acquire(mgr->lock);
1216
pj_assert(pj_list_find_node(&mgr->factory_list, tpf) == tpf);
1219
pj_lock_release(mgr->lock);
1224
PJ_DECL(void) pjsip_tpmgr_fla2_param_default(pjsip_tpmgr_fla2_param *prm)
1226
pj_bzero(prm, sizeof(*prm));
1229
/*****************************************************************************
1233
*****************************************************************************/
1236
* Create a new transport manager.
1238
PJ_DEF(pj_status_t) pjsip_tpmgr_create( pj_pool_t *pool,
1239
pjsip_endpoint *endpt,
1240
pjsip_rx_callback rx_cb,
1241
pjsip_tx_callback tx_cb,
1242
pjsip_tpmgr **p_mgr)
1247
PJ_ASSERT_RETURN(pool && endpt && rx_cb && p_mgr, PJ_EINVAL);
1249
/* Register mod_msg_print module. */
1250
status = pjsip_endpt_register_module(endpt, &mod_msg_print);
1251
if (status != PJ_SUCCESS)
1254
/* Create and initialize transport manager. */
1255
mgr = PJ_POOL_ZALLOC_T(pool, pjsip_tpmgr);
1257
mgr->on_rx_msg = rx_cb;
1258
mgr->on_tx_msg = tx_cb;
1259
pj_list_init(&mgr->factory_list);
1260
pj_list_init(&mgr->tdata_list);
1262
mgr->table = pj_hash_create(pool, PJSIP_TPMGR_HTABLE_SIZE);
1266
status = pj_lock_create_recursive_mutex(pool, "tmgr%p", &mgr->lock);
1267
if (status != PJ_SUCCESS)
1270
#if defined(PJ_DEBUG) && PJ_DEBUG!=0
1271
status = pj_atomic_create(pool, 0, &mgr->tdata_counter);
1272
if (status != PJ_SUCCESS) {
1273
pj_lock_destroy(mgr->lock);
1278
/* Set transport state callback */
1279
pjsip_tpmgr_set_state_cb(mgr, &tp_state_callback);
1281
PJ_LOG(5, (THIS_FILE, "Transport manager created."));
1287
/* Get the interface to send packet to the specified address */
1288
static pj_status_t get_net_interface(pjsip_transport_type_e tp_type,
1289
const pj_str_t *dst,
1290
pj_str_t *itf_str_addr)
1293
pj_sockaddr itf_addr;
1296
af = (tp_type & PJSIP_TRANSPORT_IPV6)? PJ_AF_INET6 : PJ_AF_INET;
1297
status = pj_getipinterface(af, dst, &itf_addr, PJ_FALSE, NULL);
1298
if (status != PJ_SUCCESS) {
1299
/* If it fails, e.g: on WM6 (http://support.microsoft.com/kb/129065),
1300
* just fallback using pj_gethostip(), see ticket #1660.
1302
PJ_LOG(5,(THIS_FILE,"Warning: unable to determine local "
1303
"interface, fallback to default interface!"));
1304
status = pj_gethostip(af, &itf_addr);
1305
if (status != PJ_SUCCESS)
1310
pj_sockaddr_print(&itf_addr, itf_str_addr->ptr,
1311
PJ_INET6_ADDRSTRLEN, 0);
1312
itf_str_addr->slen = pj_ansi_strlen(itf_str_addr->ptr);
1318
* Find out the appropriate local address info (IP address and port) to
1319
* advertise in Contact header based on the remote address to be
1320
* contacted. The local address info would be the address name of the
1321
* transport or listener which will be used to send the request.
1323
* In this implementation, it will only select the transport based on
1324
* the transport type in the request.
1326
PJ_DEF(pj_status_t) pjsip_tpmgr_find_local_addr2(pjsip_tpmgr *tpmgr,
1328
pjsip_tpmgr_fla2_param *prm)
1330
char tmp_buf[PJ_INET6_ADDRSTRLEN+10];
1332
pj_status_t status = PJSIP_EUNSUPTRANSPORT;
1336
PJ_ASSERT_RETURN(tpmgr && pool && prm, PJ_EINVAL);
1338
pj_strset(&tmp_str, tmp_buf, 0);
1339
prm->ret_addr.slen = 0;
1343
flag = pjsip_transport_get_flag_from_type(prm->tp_type);
1345
if (prm->tp_sel && prm->tp_sel->type == PJSIP_TPSELECTOR_TRANSPORT &&
1346
prm->tp_sel->u.transport)
1348
const pjsip_transport *tp = prm->tp_sel->u.transport;
1349
if (prm->local_if) {
1350
status = get_net_interface((pjsip_transport_type_e)tp->key.type,
1351
&prm->dst_host, &tmp_str);
1352
if (status != PJ_SUCCESS)
1354
pj_strdup(pool, &prm->ret_addr, &tmp_str);
1355
prm->ret_port = pj_sockaddr_get_port(&tp->local_addr);
1358
pj_strdup(pool, &prm->ret_addr, &tp->local_name.host);
1359
prm->ret_port = (pj_uint16_t)tp->local_name.port;
1361
status = PJ_SUCCESS;
1363
} else if (prm->tp_sel && prm->tp_sel->type == PJSIP_TPSELECTOR_LISTENER &&
1364
prm->tp_sel->u.listener)
1366
if (prm->local_if) {
1367
status = get_net_interface(prm->tp_sel->u.listener->type,
1368
&prm->dst_host, &tmp_str);
1369
if (status != PJ_SUCCESS)
1371
pj_strdup(pool, &prm->ret_addr, &tmp_str);
1373
pj_strdup(pool, &prm->ret_addr,
1374
&prm->tp_sel->u.listener->addr_name.host);
1376
prm->ret_port = (pj_uint16_t)prm->tp_sel->u.listener->addr_name.port;
1377
status = PJ_SUCCESS;
1379
} else if ((flag & PJSIP_TRANSPORT_DATAGRAM) != 0) {
1382
pjsip_transport *tp;
1384
pj_bzero(&remote, sizeof(remote));
1385
if (prm->tp_type & PJSIP_TRANSPORT_IPV6) {
1386
addr_len = sizeof(pj_sockaddr_in6);
1387
remote.addr.sa_family = pj_AF_INET6();
1389
addr_len = sizeof(pj_sockaddr_in);
1390
remote.addr.sa_family = pj_AF_INET();
1393
status = pjsip_tpmgr_acquire_transport(tpmgr, prm->tp_type, &remote,
1394
addr_len, NULL, &tp);
1396
if (status == PJ_SUCCESS) {
1397
if (prm->local_if) {
1398
status = get_net_interface((pjsip_transport_type_e)
1400
&prm->dst_host, &tmp_str);
1401
if (status != PJ_SUCCESS)
1403
pj_strdup(pool, &prm->ret_addr, &tmp_str);
1404
prm->ret_port = pj_sockaddr_get_port(&tp->local_addr);
1407
pj_strdup(pool, &prm->ret_addr, &tp->local_name.host);
1408
prm->ret_port = (pj_uint16_t)tp->local_name.port;
1411
pjsip_transport_dec_ref(tp);
1415
/* For connection oriented transport, enum the factories */
1418
pj_lock_acquire(tpmgr->lock);
1420
f = tpmgr->factory_list.next;
1421
while (f != &tpmgr->factory_list) {
1422
if (f->type == prm->tp_type)
1427
if (f != &tpmgr->factory_list) {
1428
if (prm->local_if) {
1429
status = get_net_interface(f->type, &prm->dst_host,
1431
if (status == PJ_SUCCESS) {
1432
pj_strdup(pool, &prm->ret_addr, &tmp_str);
1434
/* It could fail "normally" on certain cases, e.g.
1435
* when connecting to IPv6 link local address, it
1436
* will wail with EINVAL.
1437
* In this case, fallback to use the default interface
1438
* rather than failing the call.
1440
PJ_PERROR(5,(THIS_FILE, status, "Warning: unable to "
1441
"determine local interface"));
1442
pj_strdup(pool, &prm->ret_addr, &f->addr_name.host);
1443
status = PJ_SUCCESS;
1446
pj_strdup(pool, &prm->ret_addr, &f->addr_name.host);
1448
prm->ret_port = (pj_uint16_t)f->addr_name.port;
1449
status = PJ_SUCCESS;
1451
pj_lock_release(tpmgr->lock);
1458
PJ_DEF(pj_status_t) pjsip_tpmgr_find_local_addr( pjsip_tpmgr *tpmgr,
1460
pjsip_transport_type_e type,
1461
const pjsip_tpselector *sel,
1465
pjsip_tpmgr_fla2_param prm;
1468
pjsip_tpmgr_fla2_param_default(&prm);
1472
status = pjsip_tpmgr_find_local_addr2(tpmgr, pool, &prm);
1473
if (status != PJ_SUCCESS)
1476
*ip_addr = prm.ret_addr;
1477
*port = prm.ret_port;
1483
* Return number of transports currently registered to the transport
1486
PJ_DEF(unsigned) pjsip_tpmgr_get_transport_count(pjsip_tpmgr *mgr)
1488
pj_hash_iterator_t itr_val;
1489
pj_hash_iterator_t *itr;
1490
int nr_of_transports = 0;
1492
pj_lock_acquire(mgr->lock);
1494
itr = pj_hash_first(mgr->table, &itr_val);
1497
itr = pj_hash_next(mgr->table, itr);
1500
pj_lock_release(mgr->lock);
1502
return nr_of_transports;
1506
* pjsip_tpmgr_destroy()
1508
* Destroy transport manager.
1510
PJ_DEF(pj_status_t) pjsip_tpmgr_destroy( pjsip_tpmgr *mgr )
1512
pj_hash_iterator_t itr_val;
1513
pj_hash_iterator_t *itr;
1514
pjsip_tpfactory *factory;
1515
pjsip_endpoint *endpt = mgr->endpt;
1517
PJ_LOG(5, (THIS_FILE, "Destroying transport manager"));
1519
pj_lock_acquire(mgr->lock);
1522
* Destroy all transports.
1524
itr = pj_hash_first(mgr->table, &itr_val);
1525
while (itr != NULL) {
1526
pj_hash_iterator_t *next;
1527
pjsip_transport *transport;
1529
transport = (pjsip_transport*) pj_hash_this(mgr->table, itr);
1531
next = pj_hash_next(mgr->table, itr);
1533
destroy_transport(mgr, transport);
1539
* Destroy all factories/listeners.
1541
factory = mgr->factory_list.next;
1542
while (factory != &mgr->factory_list) {
1543
pjsip_tpfactory *next = factory->next;
1545
factory->destroy(factory);
1550
pj_lock_release(mgr->lock);
1552
#if defined(PJ_DEBUG) && PJ_DEBUG!=0
1553
/* If you encounter assert error on this line, it means there are
1554
* leakings in transmit data (i.e. some transmit data have not been
1557
//pj_assert(pj_atomic_get(mgr->tdata_counter) == 0);
1558
if (pj_atomic_get(mgr->tdata_counter) != 0) {
1559
PJ_LOG(3,(THIS_FILE, "Warning: %d transmit buffer(s) not freed!",
1560
pj_atomic_get(mgr->tdata_counter)));
1565
* Destroy any dangling transmit buffer.
1567
if (!pj_list_empty(&mgr->tdata_list)) {
1568
pjsip_tx_data *tdata = mgr->tdata_list.next;
1569
while (tdata != &mgr->tdata_list) {
1570
pjsip_tx_data *next = tdata->next;
1571
tx_data_destroy(tdata);
1574
PJ_LOG(3,(THIS_FILE, "Cleaned up dangling transmit buffer(s)."));
1577
#if defined(PJ_DEBUG) && PJ_DEBUG!=0
1578
pj_atomic_destroy(mgr->tdata_counter);
1581
pj_lock_destroy(mgr->lock);
1583
/* Unregister mod_msg_print. */
1584
if (mod_msg_print.id != -1) {
1585
pjsip_endpt_unregister_module(endpt, &mod_msg_print);
1593
* pjsip_tpmgr_receive_packet()
1595
* Called by tranports when they receive a new packet.
1597
PJ_DEF(pj_ssize_t) pjsip_tpmgr_receive_packet( pjsip_tpmgr *mgr,
1598
pjsip_rx_data *rdata)
1600
pjsip_transport *tr = rdata->tp_info.transport;
1603
pj_size_t remaining_len;
1604
pj_size_t total_processed = 0;
1607
pj_assert(rdata->pkt_info.len > 0);
1608
if (rdata->pkt_info.len <= 0)
1611
current_pkt = rdata->pkt_info.packet;
1612
remaining_len = rdata->pkt_info.len;
1614
tr->last_recv_len = rdata->pkt_info.len;
1615
pj_get_timestamp(&tr->last_recv_ts);
1617
/* Must NULL terminate buffer. This is the requirement of the
1620
current_pkt[remaining_len] = '\0';
1622
/* Process all message fragments. */
1623
while (remaining_len > 0) {
1628
pj_size_t msg_fragment_size;
1630
/* Skip leading newlines as pjsip_find_msg() currently can't
1631
* handle leading newlines.
1633
for (p=current_pkt, end=p+remaining_len; p!=end; ++p) {
1634
if (*p != '\r' && *p != '\n')
1637
if (p!=current_pkt) {
1638
remaining_len -= (p - current_pkt);
1639
total_processed += (p - current_pkt);
1641
if (remaining_len == 0) {
1642
return total_processed;
1646
/* Initialize default fragment size. */
1647
msg_fragment_size = remaining_len;
1649
/* Clear and init msg_info in rdata.
1650
* Endpoint might inspect the values there when we call the callback
1651
* to report some errors.
1653
pj_bzero(&rdata->msg_info, sizeof(rdata->msg_info));
1654
pj_list_init(&rdata->msg_info.parse_err);
1655
rdata->msg_info.msg_buf = current_pkt;
1656
rdata->msg_info.len = (int)remaining_len;
1658
/* For TCP transport, check if the whole message has been received. */
1659
if ((tr->flag & PJSIP_TRANSPORT_DATAGRAM) == 0) {
1660
pj_status_t msg_status;
1661
msg_status = pjsip_find_msg(current_pkt, remaining_len, PJ_FALSE,
1662
&msg_fragment_size);
1663
if (msg_status != PJ_SUCCESS) {
1664
if (remaining_len == PJSIP_MAX_PKT_LEN) {
1665
mgr->on_rx_msg(mgr->endpt, PJSIP_ERXOVERFLOW, rdata);
1666
/* Exhaust all data. */
1667
return rdata->pkt_info.len;
1669
/* Not enough data in packet. */
1670
return total_processed;
1675
/* Update msg_info. */
1676
rdata->msg_info.len = (int)msg_fragment_size;
1678
/* Null terminate packet */
1679
saved = current_pkt[msg_fragment_size];
1680
current_pkt[msg_fragment_size] = '\0';
1682
/* Parse the message. */
1683
rdata->msg_info.msg = msg =
1684
pjsip_parse_rdata( current_pkt, msg_fragment_size, rdata);
1686
/* Restore null termination */
1687
current_pkt[msg_fragment_size] = saved;
1689
/* Check for parsing syntax error */
1690
if (msg==NULL || !pj_list_empty(&rdata->msg_info.parse_err)) {
1691
pjsip_parser_err_report *err;
1695
/* Gather syntax error information */
1696
tmp.ptr = buf; tmp.slen = 0;
1697
err = rdata->msg_info.parse_err.next;
1698
while (err != &rdata->msg_info.parse_err) {
1700
len = pj_ansi_snprintf(tmp.ptr+tmp.slen, sizeof(buf)-tmp.slen,
1701
": %s exception when parsing '%.*s' "
1702
"header on line %d col %d",
1703
pj_exception_id_name(err->except_code),
1704
(int)err->hname.slen, err->hname.ptr,
1705
err->line, err->col);
1706
if (len > 0 && len < (int) (sizeof(buf)-tmp.slen)) {
1712
/* Only print error message if there's error.
1713
* Sometimes we receive blank packets (packets with only CRLF)
1714
* which were sent to keep NAT bindings.
1717
PJ_LOG(1, (THIS_FILE,
1718
"Error processing %d bytes packet from %s %s:%d %.*s:\n"
1720
"-- end of packet.",
1722
rdata->tp_info.transport->type_name,
1723
rdata->pkt_info.src_name,
1724
rdata->pkt_info.src_port,
1725
(int)tmp.slen, tmp.ptr,
1726
(int)msg_fragment_size,
1727
rdata->msg_info.msg_buf));
1730
goto finish_process_fragment;
1733
/* Perform basic header checking. */
1734
if (rdata->msg_info.cid == NULL ||
1735
rdata->msg_info.cid->id.slen == 0 ||
1736
rdata->msg_info.from == NULL ||
1737
rdata->msg_info.to == NULL ||
1738
rdata->msg_info.via == NULL ||
1739
rdata->msg_info.cseq == NULL)
1741
mgr->on_rx_msg(mgr->endpt, PJSIP_EMISSINGHDR, rdata);
1742
goto finish_process_fragment;
1746
if (rdata->msg_info.msg->type == PJSIP_REQUEST_MSG) {
1747
/* always add received parameter to the via. */
1748
pj_strdup2(rdata->tp_info.pool,
1749
&rdata->msg_info.via->recvd_param,
1750
rdata->pkt_info.src_name);
1753
* If message contains "rport" param, put the received port there.
1755
if (rdata->msg_info.via->rport_param == 0) {
1756
rdata->msg_info.via->rport_param = rdata->pkt_info.src_port;
1759
/* Drop malformed responses */
1760
if (rdata->msg_info.msg->line.status.code < 100 ||
1761
rdata->msg_info.msg->line.status.code >= 700)
1763
mgr->on_rx_msg(mgr->endpt, PJSIP_EINVALIDSTATUS, rdata);
1764
goto finish_process_fragment;
1768
/* Drop response message if it has more than one Via.
1770
/* This is wrong. Proxy DOES receive responses with multiple
1771
* Via headers! Thanks Aldo <acampi at deis.unibo.it> for pointing
1774
if (msg->type == PJSIP_RESPONSE_MSG) {
1776
hdr = (pjsip_hdr*)rdata->msg_info.via->next;
1777
if (hdr != &msg->hdr) {
1778
hdr = pjsip_msg_find_hdr(msg, PJSIP_H_VIA, hdr);
1780
mgr->on_rx_msg(mgr->endpt, PJSIP_EMULTIPLEVIA, rdata);
1781
goto finish_process_fragment;
1787
/* Call the transport manager's upstream message callback.
1789
mgr->on_rx_msg(mgr->endpt, PJ_SUCCESS, rdata);
1792
finish_process_fragment:
1793
total_processed += msg_fragment_size;
1794
current_pkt += msg_fragment_size;
1795
remaining_len -= msg_fragment_size;
1797
} /* while (rdata->pkt_info.len > 0) */
1800
return total_processed;
1805
* pjsip_tpmgr_acquire_transport()
1807
* Get transport suitable to communicate to remote. Create a new one
1810
PJ_DEF(pj_status_t) pjsip_tpmgr_acquire_transport(pjsip_tpmgr *mgr,
1811
pjsip_transport_type_e type,
1812
const pj_sockaddr_t *remote,
1814
const pjsip_tpselector *sel,
1815
pjsip_transport **tp)
1817
return pjsip_tpmgr_acquire_transport2(mgr, type, remote, addr_len, sel,
1822
* pjsip_tpmgr_acquire_transport2()
1824
* Get transport suitable to communicate to remote. Create a new one
1827
PJ_DEF(pj_status_t) pjsip_tpmgr_acquire_transport2(pjsip_tpmgr *mgr,
1828
pjsip_transport_type_e type,
1829
const pj_sockaddr_t *remote,
1831
const pjsip_tpselector *sel,
1832
pjsip_tx_data *tdata,
1833
pjsip_transport **tp)
1835
pjsip_tpfactory *factory;
1838
TRACE_((THIS_FILE,"Acquiring transport type=%s, remote=%s:%d",
1839
pjsip_transport_get_type_name(type),
1840
addr_string(remote),
1841
pj_sockaddr_get_port(remote)));
1843
pj_lock_acquire(mgr->lock);
1845
/* If transport is specified, then just use it if it is suitable
1846
* for the destination.
1848
if (sel && sel->type == PJSIP_TPSELECTOR_TRANSPORT &&
1851
pjsip_transport *seltp = sel->u.transport;
1853
/* See if the transport is (not) suitable */
1854
if (seltp->key.type != type) {
1855
pj_lock_release(mgr->lock);
1856
return PJSIP_ETPNOTSUITABLE;
1859
/* We could also verify that the destination address is reachable
1860
* from this transport (i.e. both are equal), but if application
1861
* has requested a specific transport to be used, assume that
1862
* it knows what to do.
1864
* In other words, I don't think destination verification is a good
1868
/* Transport looks to be suitable to use, so just use it. */
1869
pjsip_transport_add_ref(seltp);
1870
pj_lock_release(mgr->lock);
1873
TRACE_((THIS_FILE, "Transport %s acquired", seltp->obj_name));
1877
} else if (sel && sel->type == PJSIP_TPSELECTOR_LISTENER &&
1880
/* Application has requested that a specific listener is to
1881
* be used. In this case, skip transport hash table lookup.
1884
/* Verify that the listener type matches the destination type */
1885
if (sel->u.listener->type != type) {
1886
pj_lock_release(mgr->lock);
1887
return PJSIP_ETPNOTSUITABLE;
1890
/* We'll use this listener to create transport */
1891
factory = sel->u.listener;
1896
* This is the "normal" flow, where application doesn't specify
1897
* specific transport/listener to be used to send message to.
1898
* In this case, lookup the transport from the hash table.
1900
pjsip_transport_key key;
1902
pjsip_transport *transport;
1904
pj_bzero(&key, sizeof(key));
1905
key_len = sizeof(key.type) + addr_len;
1907
/* First try to get exact destination. */
1909
pj_memcpy(&key.rem_addr, remote, addr_len);
1911
transport = (pjsip_transport*)
1912
pj_hash_get(mgr->table, &key, key_len, NULL);
1914
if (transport == NULL) {
1915
unsigned flag = pjsip_transport_get_flag_from_type(type);
1916
const pj_sockaddr *remote_addr = (const pj_sockaddr*)remote;
1919
/* Ignore address for loop transports. */
1920
if (type == PJSIP_TRANSPORT_LOOP ||
1921
type == PJSIP_TRANSPORT_LOOP_DGRAM)
1923
pj_sockaddr *addr = &key.rem_addr;
1925
pj_bzero(addr, addr_len);
1926
key_len = sizeof(key.type) + addr_len;
1927
transport = (pjsip_transport*)
1928
pj_hash_get(mgr->table, &key, key_len, NULL);
1930
/* For datagram transports, try lookup with zero address.
1932
else if (flag & PJSIP_TRANSPORT_DATAGRAM)
1934
pj_sockaddr *addr = &key.rem_addr;
1936
pj_bzero(addr, addr_len);
1937
addr->addr.sa_family = remote_addr->addr.sa_family;
1939
key_len = sizeof(key.type) + addr_len;
1940
transport = (pjsip_transport*)
1941
pj_hash_get(mgr->table, &key, key_len, NULL);
1945
if (transport!=NULL && !transport->is_shutdown) {
1949
pjsip_transport_add_ref(transport);
1950
pj_lock_release(mgr->lock);
1953
TRACE_((THIS_FILE, "Transport %s acquired", transport->obj_name));
1958
* Transport not found!
1959
* Find factory that can create such transport.
1961
factory = mgr->factory_list.next;
1962
while (factory != &mgr->factory_list) {
1963
if (factory->type == type)
1965
factory = factory->next;
1968
if (factory == &mgr->factory_list) {
1969
/* No factory can create the transport! */
1970
pj_lock_release(mgr->lock);
1971
TRACE_((THIS_FILE, "No suitable factory was found either"));
1972
return PJSIP_EUNSUPTRANSPORT;
1976
TRACE_((THIS_FILE, "Creating new transport from factory"));
1978
/* Request factory to create transport. */
1979
if (factory->create_transport2) {
1980
status = factory->create_transport2(factory, mgr, mgr->endpt,
1981
(const pj_sockaddr*) remote,
1982
addr_len, tdata, tp);
1984
status = factory->create_transport(factory, mgr, mgr->endpt,
1985
(const pj_sockaddr*) remote,
1988
if (status == PJ_SUCCESS) {
1989
PJ_ASSERT_ON_FAIL(tp!=NULL,
1990
{pj_lock_release(mgr->lock); return PJ_EBUG;});
1991
pjsip_transport_add_ref(*tp);
1993
pj_lock_release(mgr->lock);
1998
* Dump transport info.
2000
PJ_DEF(void) pjsip_tpmgr_dump_transports(pjsip_tpmgr *mgr)
2002
#if PJ_LOG_MAX_LEVEL >= 3
2003
pj_hash_iterator_t itr_val;
2004
pj_hash_iterator_t *itr;
2005
pjsip_tpfactory *factory;
2007
pj_lock_acquire(mgr->lock);
2009
#if defined(PJ_DEBUG) && PJ_DEBUG!=0
2010
PJ_LOG(3,(THIS_FILE, " Outstanding transmit buffers: %d",
2011
pj_atomic_get(mgr->tdata_counter)));
2014
PJ_LOG(3, (THIS_FILE, " Dumping listeners:"));
2015
factory = mgr->factory_list.next;
2016
while (factory != &mgr->factory_list) {
2017
PJ_LOG(3, (THIS_FILE, " %s %s:%.*s:%d",
2020
(int)factory->addr_name.host.slen,
2021
factory->addr_name.host.ptr,
2022
(int)factory->addr_name.port));
2023
factory = factory->next;
2026
itr = pj_hash_first(mgr->table, &itr_val);
2028
PJ_LOG(3, (THIS_FILE, " Dumping transports:"));
2031
pjsip_transport *t = (pjsip_transport*)
2032
pj_hash_this(mgr->table, itr);
2034
PJ_LOG(3, (THIS_FILE, " %s %s (refcnt=%d%s)",
2037
pj_atomic_get(t->ref_cnt),
2038
(t->idle_timer.id ? " [idle]" : "")));
2040
itr = pj_hash_next(mgr->table, itr);
2044
pj_lock_release(mgr->lock);
2051
* Set callback of global transport state notification.
2053
PJ_DEF(pj_status_t) pjsip_tpmgr_set_state_cb(pjsip_tpmgr *mgr,
2054
pjsip_tp_state_callback cb)
2056
PJ_ASSERT_RETURN(mgr, PJ_EINVAL);
2058
mgr->tp_state_cb = cb;
2064
* Get callback of global transport state notification.
2066
PJ_DEF(pjsip_tp_state_callback) pjsip_tpmgr_get_state_cb(
2067
const pjsip_tpmgr *mgr)
2069
PJ_ASSERT_RETURN(mgr, NULL);
2071
return mgr->tp_state_cb;
2076
* Allocate and init transport data.
2078
static void init_tp_data(pjsip_transport *tp)
2080
transport_data *tp_data;
2082
pj_assert(tp && !tp->data);
2084
tp_data = PJ_POOL_ZALLOC_T(tp->pool, transport_data);
2085
pj_list_init(&tp_data->st_listeners);
2086
pj_list_init(&tp_data->st_listeners_empty);
2091
static void tp_state_callback(pjsip_transport *tp,
2092
pjsip_transport_state state,
2093
const pjsip_transport_state_info *info)
2095
transport_data *tp_data;
2097
pj_lock_acquire(tp->lock);
2099
tp_data = (transport_data*)tp->data;
2101
/* Notify the transport state listeners, if any. */
2102
if (!tp_data || pj_list_empty(&tp_data->st_listeners)) {
2105
pjsip_transport_state_info st_info;
2106
tp_state_listener *st_listener = tp_data->st_listeners.next;
2108
/* As we need to put the user data into the transport state info,
2109
* let's use a copy of transport state info.
2111
pj_memcpy(&st_info, info, sizeof(st_info));
2112
while (st_listener != &tp_data->st_listeners) {
2113
st_info.user_data = st_listener->user_data;
2114
(*st_listener->cb)(tp, state, &st_info);
2116
st_listener = st_listener->next;
2121
pj_lock_release(tp->lock);
2126
* Add a listener to the specified transport for transport state notification.
2128
PJ_DEF(pj_status_t) pjsip_transport_add_state_listener (
2129
pjsip_transport *tp,
2130
pjsip_tp_state_callback cb,
2132
pjsip_tp_state_listener_key **key)
2134
transport_data *tp_data;
2135
tp_state_listener *entry;
2137
PJ_ASSERT_RETURN(tp && cb && key, PJ_EINVAL);
2139
pj_lock_acquire(tp->lock);
2141
/* Init transport data, if it hasn't */
2145
tp_data = (transport_data*)tp->data;
2147
/* Init the new listener entry. Use available empty slot, if any,
2148
* otherwise allocate it using the transport pool.
2150
if (!pj_list_empty(&tp_data->st_listeners_empty)) {
2151
entry = tp_data->st_listeners_empty.next;
2152
pj_list_erase(entry);
2154
entry = PJ_POOL_ZALLOC_T(tp->pool, tp_state_listener);
2157
entry->user_data = user_data;
2159
/* Add the new listener entry to the listeners list */
2160
pj_list_push_back(&tp_data->st_listeners, entry);
2164
pj_lock_release(tp->lock);
2170
* Remove a listener from the specified transport for transport state
2173
PJ_DEF(pj_status_t) pjsip_transport_remove_state_listener (
2174
pjsip_transport *tp,
2175
pjsip_tp_state_listener_key *key,
2176
const void *user_data)
2178
transport_data *tp_data;
2179
tp_state_listener *entry;
2181
PJ_ASSERT_RETURN(tp && key, PJ_EINVAL);
2183
pj_lock_acquire(tp->lock);
2185
tp_data = (transport_data*)tp->data;
2187
/* Transport data is NULL or no registered listener? */
2188
if (!tp_data || pj_list_empty(&tp_data->st_listeners)) {
2189
pj_lock_release(tp->lock);
2190
return PJ_ENOTFOUND;
2193
entry = (tp_state_listener*)key;
2195
/* Validate the user data */
2196
if (entry->user_data != user_data) {
2197
pj_assert(!"Invalid transport state listener key");
2198
pj_lock_release(tp->lock);
2202
/* Reset the entry and move it to the empty list */
2204
entry->user_data = NULL;
2205
pj_list_erase(entry);
2206
pj_list_push_back(&tp_data->st_listeners_empty, entry);
2208
pj_lock_release(tp->lock);