UDPTL support for T.38. More...
#include "asterisk/network.h"
#include "asterisk/frame.h"
#include "asterisk/io.h"
#include "asterisk/sched.h"
#include "asterisk/channel.h"
#include "asterisk/netsock2.h"
Go to the source code of this file.
Data Structures | |
struct | ast_udptl_protocol |
Typedefs | |
typedef int(* | ast_udptl_callback )(struct ast_udptl *udptl, struct ast_frame *f, void *data) |
Enumerations | |
enum | ast_t38_ec_modes { UDPTL_ERROR_CORRECTION_NONE, UDPTL_ERROR_CORRECTION_FEC, UDPTL_ERROR_CORRECTION_REDUNDANCY } |
Functions | |
int | ast_udptl_bridge (struct ast_channel *c0, struct ast_channel *c1, int flags, struct ast_frame **fo, struct ast_channel **rc) |
void | ast_udptl_destroy (struct ast_udptl *udptl) |
int | ast_udptl_fd (const struct ast_udptl *udptl) |
enum ast_t38_ec_modes | ast_udptl_get_error_correction_scheme (const struct ast_udptl *udptl) |
unsigned int | ast_udptl_get_far_max_datagram (const struct ast_udptl *udptl) |
unsigned int | ast_udptl_get_far_max_ifp (struct ast_udptl *udptl) |
retrieves far max ifp More... | |
unsigned int | ast_udptl_get_local_max_datagram (struct ast_udptl *udptl) |
retrieves local_max_datagram. More... | |
void | ast_udptl_get_peer (const struct ast_udptl *udptl, struct ast_sockaddr *them) |
void | ast_udptl_get_us (const struct ast_udptl *udptl, struct ast_sockaddr *us) |
void | ast_udptl_init (void) |
struct ast_udptl * | ast_udptl_new_with_bindaddr (struct sched_context *sched, struct io_context *io, int callbackmode, struct ast_sockaddr *in) |
int | ast_udptl_proto_register (struct ast_udptl_protocol *proto) |
void | ast_udptl_proto_unregister (struct ast_udptl_protocol *proto) |
struct ast_frame * | ast_udptl_read (struct ast_udptl *udptl) |
int | ast_udptl_reload (void) |
void | ast_udptl_reset (struct ast_udptl *udptl) |
void | ast_udptl_set_callback (struct ast_udptl *udptl, ast_udptl_callback callback) |
void | ast_udptl_set_data (struct ast_udptl *udptl, void *data) |
void | ast_udptl_set_error_correction_scheme (struct ast_udptl *udptl, enum ast_t38_ec_modes ec) |
void | ast_udptl_set_far_max_datagram (struct ast_udptl *udptl, unsigned int max_datagram) |
sets far max datagram size. If max_datagram is = 0, the far max datagram size is set to a default value. More... | |
void | ast_udptl_set_local_max_ifp (struct ast_udptl *udptl, unsigned int max_ifp) |
void | ast_udptl_set_m_type (struct ast_udptl *udptl, unsigned int pt) |
void | ast_udptl_set_peer (struct ast_udptl *udptl, const struct ast_sockaddr *them) |
void | ast_udptl_set_tag (struct ast_udptl *udptl, const char *format,...) |
Associates a character string 'tag' with a UDPTL session. More... | |
void | ast_udptl_set_udptlmap_type (struct ast_udptl *udptl, unsigned int pt, char *mimeType, char *mimeSubtype) |
void | ast_udptl_setnat (struct ast_udptl *udptl, int nat) |
int | ast_udptl_setqos (struct ast_udptl *udptl, unsigned int tos, unsigned int cos) |
void | ast_udptl_stop (struct ast_udptl *udptl) |
int | ast_udptl_write (struct ast_udptl *udptl, struct ast_frame *f) |
enum ast_t38_ec_modes |
Enumerator | |
---|---|
UDPTL_ERROR_CORRECTION_NONE | |
UDPTL_ERROR_CORRECTION_FEC | |
UDPTL_ERROR_CORRECTION_REDUNDANCY |
int ast_udptl_bridge | ( | struct ast_channel * | c0, |
struct ast_channel * | c1, | ||
int | flags, | ||
struct ast_frame ** | fo, | ||
struct ast_channel ** | rc | ||
) |
Definition at line 1146 of file udptl.c.
References ast_channel_lock, ast_channel_trylock, ast_channel_unlock, ast_check_hangup(), ast_debug, AST_FRAME_MODEM, ast_frfree, ast_log(), ast_read(), ast_sockaddr_cmp(), ast_sockaddr_copy(), ast_sockaddr_stringify(), ast_udptl_get_peer(), ast_waitfor_n(), ast_write(), f, ast_frame::frametype, get_proto(), ast_udptl_protocol::get_udptl_info, LOG_WARNING, ast_channel::masq, ast_channel::masqr, ast_channel::name, ast_udptl_protocol::set_udptl_peer, and ast_channel::tech_pvt.
void ast_udptl_destroy | ( | struct ast_udptl * | udptl | ) |
Definition at line 1044 of file udptl.c.
References ast_free, ast_io_remove(), ast_udptl::fd, ast_udptl::io, ast_udptl::ioid, and ast_udptl::tag.
Referenced by __sip_destroy().
int ast_udptl_fd | ( | const struct ast_udptl * | udptl | ) |
Definition at line 643 of file udptl.c.
References ast_udptl::fd.
Referenced by __oh323_new(), initialize_udptl(), and sip_new().
enum ast_t38_ec_modes ast_udptl_get_error_correction_scheme | ( | const struct ast_udptl * | udptl | ) |
Definition at line 841 of file udptl.c.
References ast_udptl::error_correction_scheme.
Referenced by add_sdp().
unsigned int ast_udptl_get_far_max_datagram | ( | const struct ast_udptl * | udptl | ) |
Definition at line 909 of file udptl.c.
References ast_udptl::far_max_datagram.
Referenced by process_sdp().
unsigned int ast_udptl_get_far_max_ifp | ( | struct ast_udptl * | udptl | ) |
retrieves far max ifp
positive | value representing max ifp size |
0 | if no value is present |
Definition at line 917 of file udptl.c.
References calculate_far_max_ifp(), and ast_udptl::far_max_ifp.
Referenced by change_t38_state(), and interpret_t38_parameters().
unsigned int ast_udptl_get_local_max_datagram | ( | struct ast_udptl * | udptl | ) |
retrieves local_max_datagram.
positive | value representing max datagram size. |
0 | if no value is present |
Definition at line 885 of file udptl.c.
References calculate_local_max_datagram(), and ast_udptl::local_max_datagram.
Referenced by add_sdp().
void ast_udptl_get_peer | ( | const struct ast_udptl * | udptl, |
struct ast_sockaddr * | them | ||
) |
Definition at line 1029 of file udptl.c.
References ast_sockaddr_copy(), and ast_udptl::them.
Referenced by ast_udptl_bridge(), and sip_set_udptl_peer().
void ast_udptl_get_us | ( | const struct ast_udptl * | udptl, |
struct ast_sockaddr * | us | ||
) |
Definition at line 1034 of file udptl.c.
References ast_sockaddr_copy(), and ast_udptl::us.
Referenced by add_sdp().
void ast_udptl_init | ( | void | ) |
Definition at line 1436 of file udptl.c.
References __ast_udptl_reload(), ARRAY_LEN, ast_cli_register_multiple(), ast_register_atexit(), and udptl_shutdown().
Referenced by main().
struct ast_udptl* ast_udptl_new_with_bindaddr | ( | struct sched_context * | sched, |
struct io_context * | io, | ||
int | callbackmode, | ||
struct ast_sockaddr * | in | ||
) |
Definition at line 929 of file udptl.c.
References ast_bind(), ast_calloc, ast_free, ast_io_add(), AST_IO_IN, ast_log(), ast_random(), ast_sockaddr_copy(), ast_sockaddr_is_ipv6(), ast_sockaddr_set_port, udptl_fec_tx_buffer_t::buf_len, udptl_fec_rx_buffer_t::buf_len, errno, ast_udptl::error_correction_entries, ast_udptl::error_correction_span, ast_udptl::far_max_datagram, ast_udptl::far_max_ifp, ast_udptl::fd, ast_udptl::flags, ast_udptl::io, io, ast_udptl::ioid, ast_udptl::local_max_datagram, ast_udptl::local_max_ifp, LOG_WARNING, ast_udptl::rx, ast_udptl::sched, sched, ast_udptl::tx, UDPTL_BUF_MASK, udptlend, udptlfecentries, udptlfecspan, udptlread(), udptlstart, and ast_udptl::us.
Referenced by initialize_udptl().
int ast_udptl_proto_register | ( | struct ast_udptl_protocol * | proto | ) |
Definition at line 1115 of file udptl.c.
References ast_log(), AST_RWLIST_INSERT_TAIL, AST_RWLIST_TRAVERSE, AST_RWLIST_UNLOCK, AST_RWLIST_WRLOCK, LOG_WARNING, and ast_udptl_protocol::type.
Referenced by load_module().
void ast_udptl_proto_unregister | ( | struct ast_udptl_protocol * | proto | ) |
Definition at line 1108 of file udptl.c.
References AST_RWLIST_REMOVE, AST_RWLIST_UNLOCK, and AST_RWLIST_WRLOCK.
Referenced by unload_module().
Definition at line 675 of file udptl.c.
References ast_assert, ast_debug, AST_FRIENDLY_OFFSET, ast_log(), ast_null_frame, ast_recvfrom(), ast_sockaddr_cmp(), ast_sockaddr_copy(), ast_sockaddr_isnull(), ast_sockaddr_stringify(), ast_verb, errno, ast_udptl::f, ast_udptl::fd, LOG_TAG, LOG_WARNING, ast_udptl::nat, ast_udptl::rawdata, ast_udptl::them, udptl_debug_test_addr(), and udptl_rx_packet().
Referenced by sip_rtp_read(), skinny_rtp_read(), and udptlread().
int ast_udptl_reload | ( | void | ) |
Definition at line 1421 of file udptl.c.
References __ast_udptl_reload().
void ast_udptl_reset | ( | struct ast_udptl * | udptl | ) |
void ast_udptl_set_callback | ( | struct ast_udptl * | udptl, |
ast_udptl_callback | callback | ||
) |
void ast_udptl_set_data | ( | struct ast_udptl * | udptl, |
void * | data | ||
) |
Definition at line 648 of file udptl.c.
References ast_udptl::data.
void ast_udptl_set_error_correction_scheme | ( | struct ast_udptl * | udptl, |
enum ast_t38_ec_modes | ec | ||
) |
Definition at line 846 of file udptl.c.
References ast_udptl::error_correction_entries, ast_udptl::error_correction_scheme, ast_udptl::error_correction_span, ast_udptl::far_max_ifp, ast_udptl::local_max_datagram, UDPTL_ERROR_CORRECTION_FEC, and UDPTL_ERROR_CORRECTION_REDUNDANCY.
Referenced by process_sdp(), process_sdp_a_image(), and set_t38_capabilities().
void ast_udptl_set_far_max_datagram | ( | struct ast_udptl * | udptl, |
unsigned int | max_datagram | ||
) |
sets far max datagram size. If max_datagram is = 0, the far max datagram size is set to a default value.
Definition at line 898 of file udptl.c.
References DEFAULT_FAX_MAX_DATAGRAM, ast_udptl::far_max_datagram, ast_udptl::far_max_ifp, and FAX_MAX_DATAGRAM_LIMIT.
Referenced by process_sdp(), and process_sdp_a_image().
void ast_udptl_set_local_max_ifp | ( | struct ast_udptl * | udptl, |
unsigned int | max_ifp | ||
) |
Definition at line 874 of file udptl.c.
References ast_udptl::local_max_datagram, and ast_udptl::local_max_ifp.
Referenced by interpret_t38_parameters().
void ast_udptl_set_m_type | ( | struct ast_udptl * | udptl, |
unsigned int | pt | ||
) |
void ast_udptl_set_peer | ( | struct ast_udptl * | udptl, |
const struct ast_sockaddr * | them | ||
) |
Definition at line 1024 of file udptl.c.
References ast_sockaddr_copy(), and ast_udptl::them.
Referenced by process_sdp().
void ast_udptl_set_tag | ( | struct ast_udptl * | udptl, |
const char * | format, | ||
... | |||
) |
Associates a character string 'tag' with a UDPTL session.
udptl | The UDPTL session. |
format | printf-style format string used to construct the tag |
This function formats a tag for the specified UDPTL session, so that any log messages generated by the UDPTL stack related to that session will include the tag and the reader of the messages will be able to identify which endpoint caused them to be generated.
none |
Definition at line 1006 of file udptl.c.
References ast_free, ast_vasprintf, and ast_udptl::tag.
Referenced by change_t38_state().
void ast_udptl_set_udptlmap_type | ( | struct ast_udptl * | udptl, |
unsigned int | pt, | ||
char * | mimeType, | ||
char * | mimeSubtype | ||
) |
void ast_udptl_setnat | ( | struct ast_udptl * | udptl, |
int | nat | ||
) |
Definition at line 658 of file udptl.c.
References ast_udptl::nat, and nat.
Referenced by do_setnat(), and initialize_udptl().
int ast_udptl_setqos | ( | struct ast_udptl * | udptl, |
unsigned int | tos, | ||
unsigned int | cos | ||
) |
Definition at line 1019 of file udptl.c.
References ast_netsock_set_qos(), and ast_udptl::fd.
Referenced by initialize_udptl().
void ast_udptl_stop | ( | struct ast_udptl * | udptl | ) |
Definition at line 1039 of file udptl.c.
References ast_sockaddr_setnull(), and ast_udptl::them.
Referenced by process_sdp(), and stop_media_flows().
Definition at line 1055 of file udptl.c.
References AST_FRAME_MODEM, ast_log(), AST_MODEM_T38, ast_sendto(), ast_sockaddr_isnull(), ast_sockaddr_stringify(), ast_verb, ast_frame_subclass::codec, ast_frame::data, ast_frame::datalen, DEFAULT_FAX_MAX_DATAGRAM, errno, ast_udptl::far_max_datagram, ast_udptl::far_max_ifp, ast_udptl::fd, ast_frame::frametype, len(), LOG_NOTICE, LOG_TAG, LOG_WARNING, ast_frame::ptr, seq, ast_frame::subclass, ast_udptl::them, ast_udptl::tx_seq_no, udptl_build_packet(), and udptl_debug_test_addr().
Referenced by sip_write().