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rtsp_demo.c
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rtsp_demo.c
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/*************************************************************************
> File Name: rtsp_demo.c
> Author: bxq
> Mail: 544177215@qq.com
> Created Time: Monday, November 23, 2015 AM12:34:09 CST
************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <stdint.h>
#include "comm.h"
#include "rtsp_demo.h"
#include "rtsp_msg.h"
#include "rtp_enc.h"
#include "queue.h"
#include "stream_queue.h"
#include "utils.h"
#ifdef __WIN32__
#define MSG_DONTWAIT 0
#define SK_EAGAIN (WSAEWOULDBLOCK)
#define SK_EINTR (WSAEINTR)
typedef int SOCKLEN;
#endif
#ifdef __LINUX__
#define SOCKET_ERROR (-1)
#define INVALID_SOCKET (-1)
#define SK_EAGAIN (EAGAIN)
#define SK_EINTR (EINTR)
#define closesocket(x) close(x)
typedef int SOCKET;
typedef socklen_t SOCKLEN;
#endif
static int sk_errno (void)
{
#ifdef __WIN32__
return WSAGetLastError();
#endif
#ifdef __LINUX__
return (errno);
#endif
}
static const char *sk_strerror (int err)
{
#ifdef __WIN32__
static char serr_code_buf[24];
sprintf(serr_code_buf, "WSAE-%d", err);
return serr_code_buf;
#endif
#ifdef __LINUX__
return strerror(err);
#endif
}
struct rtsp_session;
struct rtsp_client_connection;
TAILQ_HEAD(rtsp_session_queue_head, rtsp_session);
TAILQ_HEAD(rtsp_client_connection_queue_head, rtsp_client_connection);
struct rtsp_session
{
char path[64];
int vcodec_id;
int acodec_id;
int auth_type;
char auth_user[16];
char auth_passwd[16];
union {
struct codec_data_h264 h264;
struct codec_data_h265 h265;
} vcodec_data;
union {
struct codec_data_g726 g726;
struct codec_data_aac aac;
} acodec_data;
rtp_enc vrtpe;
rtp_enc artpe;
struct stream_queue *vstreamq;
struct stream_queue *astreamq;
uint64_t video_ntptime_of_zero_ts;
uint64_t audio_ntptime_of_zero_ts;
struct rtsp_demo *demo;
struct rtsp_client_connection_queue_head connections_qhead;
TAILQ_ENTRY(rtsp_session) demo_entry;
};
struct rtp_connection
{
int is_over_tcp;
int tcp_interleaved[2];//if is_over_tcp=1. [0] is rtp interleaved, [1] is rtcp interleaved
SOCKET udp_sockfd[2]; //if is_over_tcp=0. [0] is rtp socket, [1] is rtcp socket
uint16_t udp_localport[2]; //if is_over_tcp=0. [0] is rtp local port, [1] is rtcp local port
uint16_t udp_peerport[2]; //if is_over_tcp=0. [0] is rtp peer port, [1] is rtcp peer port
struct in_addr peer_addr; //peer ipv4 addr
int streamq_index;
uint32_t ssrc;
uint32_t rtcp_packet_count;
uint32_t rtcp_octet_count;
uint64_t rtcp_last_ts;
};
#define RTP_MAX_PKTSIZ ((1500-42)/4*4)
#define VRTP_MAX_NBPKTS (400)
#define ARTP_MAX_NBPKTS (10)
#define VRTP_PT_ID (96)
#define ARTP_PT_ID (97)
#define VRTSP_SUBPATH "track1"
#define ARTSP_SUBPATH "track2"
#define RTSP_REQBUF_MAX_SIZ (1024)
//#define RTSP_RESBUF_MAX_SIZ (1024)
#if (RTP_MAX_PKTSIZ+4 < RTSP_REQBUF_MAX_SIZ)
#define RTSP_RESBUF_MAX_SIZ (RTSP_REQ_BUF_MAX_SIZ)
#else
#define RTSP_RESBUF_MAX_SIZ (RTP_MAX_PKTSIZ+4)
#endif
struct rtsp_client_connection
{
int state; //session state
#define RTSP_CC_STATE_INIT 0
#define RTSP_CC_STATE_READY 1
#define RTSP_CC_STATE_PLAYING 2
#define RTSP_CC_STATE_RECORDING 3
SOCKET sockfd; //rtsp client socket
struct in_addr peer_addr; //peer ipv4 addr
unsigned int peer_port; //peer ipv4 port
unsigned long session_id; //session id
char reqbuf[RTSP_REQBUF_MAX_SIZ];
int reqlen;
char resbuf[RTSP_RESBUF_MAX_SIZ];
int resoff;
int reslen;
struct rtp_connection *vrtp;
struct rtp_connection *artp;
struct rtsp_demo *demo;
struct rtsp_session *session;
TAILQ_ENTRY(rtsp_client_connection) demo_entry;
TAILQ_ENTRY(rtsp_client_connection) session_entry;
};
struct rtsp_demo
{
SOCKET sockfd; //rtsp server socket 0:invalid
struct rtsp_session_queue_head sessions_qhead;
struct rtsp_client_connection_queue_head connections_qhead;
};
static struct rtsp_demo *__alloc_demo (void)
{
struct rtsp_demo *d = (struct rtsp_demo*) calloc(1, sizeof(struct rtsp_demo));
if (NULL == d) {
err("alloc memory for rtsp_demo failed\n");
return NULL;
}
TAILQ_INIT(&d->sessions_qhead);
TAILQ_INIT(&d->connections_qhead);
return d;
}
static void __free_demo (struct rtsp_demo *d)
{
if (d) {
free(d);
}
}
static struct rtsp_session *__alloc_session (struct rtsp_demo *d)
{
struct rtsp_session *s = (struct rtsp_session*) calloc(1, sizeof(struct rtsp_session));
if (NULL == s) {
err("alloc memory for rtsp_session failed\n");
return NULL;
}
s->demo = d;
TAILQ_INIT(&s->connections_qhead);
TAILQ_INSERT_TAIL(&d->sessions_qhead, s, demo_entry);
return s;
}
static void __free_session (struct rtsp_session *s)
{
if (s) {
struct rtsp_demo *d = s->demo;
TAILQ_REMOVE(&d->sessions_qhead, s, demo_entry);
free(s);
}
}
static struct rtsp_client_connection *__alloc_client_connection (struct rtsp_demo *d)
{
struct rtsp_client_connection *cc = (struct rtsp_client_connection*) calloc(1, sizeof(struct rtsp_client_connection));
if (NULL == cc) {
err("alloc memory for rtsp_session failed\n");
return NULL;
}
cc->demo = d;
TAILQ_INSERT_TAIL(&d->connections_qhead, cc, demo_entry);
return cc;
}
static void __free_client_connection (struct rtsp_client_connection *cc)
{
if (cc) {
struct rtsp_demo *d = cc->demo;
TAILQ_REMOVE(&d->connections_qhead, cc, demo_entry);
free(cc);
}
}
static void __client_connection_bind_session (struct rtsp_client_connection *cc, struct rtsp_session *s)
{
if (cc->session == NULL) {
cc->session = s;
TAILQ_INSERT_TAIL(&s->connections_qhead, cc, session_entry);
}
}
static void __client_connection_unbind_session (struct rtsp_client_connection *cc)
{
struct rtsp_session *s = cc->session;
if (s) {
TAILQ_REMOVE(&s->connections_qhead, cc, session_entry);
cc->session = NULL;
}
}
rtsp_demo_handle rtsp_new_demo (int port)
{
struct rtsp_demo *d = NULL;
struct sockaddr_in inaddr;
SOCKET sockfd;
int ret;
#ifdef __WIN32__
WSADATA ws;
WSAStartup(MAKEWORD(2,2), &ws);
#endif
d = __alloc_demo();
if (NULL == d) {
return NULL;
}
sockfd = socket(AF_INET, SOCK_STREAM, 0);
if (sockfd == INVALID_SOCKET) {
err("create socket failed : %s\n", sk_strerror(sk_errno()));
__free_demo(d);
return NULL;
}
if (port <= 0)
port = 554;
memset(&inaddr, 0, sizeof(inaddr));
inaddr.sin_family = AF_INET;
inaddr.sin_addr.s_addr = htonl(INADDR_ANY);
inaddr.sin_port = htons(port);
ret = bind(sockfd, (struct sockaddr*)&inaddr, sizeof(inaddr));
if (ret == SOCKET_ERROR) {
err("bind socket to address failed : %s\n", sk_strerror(sk_errno()));
closesocket(sockfd);
__free_demo(d);
return NULL;
}
ret = listen(sockfd, 128); //XXX
if (ret == SOCKET_ERROR) {
err("listen socket failed : %s\n", sk_strerror(sk_errno()));
closesocket(sockfd);
__free_demo(d);
return NULL;
}
d->sockfd = sockfd;
info("rtsp server demo starting on port %d\n", port);
return (rtsp_demo_handle)d;
}
#ifdef __WIN32__
#include <mstcpip.h>
#endif
#ifdef __LINUX__
#include <fcntl.h>
#include <netinet/tcp.h>
#endif
static int rtsp_set_client_socket (SOCKET sockfd)
{
int ret;
#ifdef __WIN32__
unsigned long nonblocked = 1;
int sndbufsiz = 1024 * 256;
int keepalive = 1;
struct tcp_keepalive alive_in, alive_out;
unsigned long alive_retlen;
struct linger ling;
ret = ioctlsocket(sockfd, FIONBIO, &nonblocked);
if (ret == SOCKET_ERROR) {
warn("ioctlsocket FIONBIO failed: %s\n", sk_strerror(sk_errno()));
}
ret = setsockopt(sockfd, SOL_SOCKET, SO_SNDBUF, (const char*)&sndbufsiz, sizeof(sndbufsiz));
if (ret == SOCKET_ERROR) {
warn("setsockopt SO_SNDBUF failed: %s\n", sk_strerror(sk_errno()));
}
ret = setsockopt(sockfd, SOL_SOCKET, SO_KEEPALIVE, (const char*)&keepalive, sizeof(keepalive));
if (ret == SOCKET_ERROR) {
warn("setsockopt setsockopt SO_KEEPALIVE failed: %s\n", sk_strerror(sk_errno()));
}
alive_in.onoff = TRUE;
alive_in.keepalivetime = 60000;
alive_in.keepaliveinterval = 30000;
ret = WSAIoctl(sockfd, SIO_KEEPALIVE_VALS, &alive_in, sizeof(alive_in),
&alive_out, sizeof(alive_out), &alive_retlen, NULL, NULL);
if (ret == SOCKET_ERROR) {
warn("WSAIoctl SIO_KEEPALIVE_VALS failed: %s\n", sk_strerror(sk_errno()));
}
memset(&ling, 0, sizeof(ling));
ling.l_onoff = 1;
ling.l_linger = 0;
ret = setsockopt(sockfd, SOL_SOCKET, SO_LINGER, (const char*)&ling, sizeof(ling)); //resolve too many TCP CLOSE_WAIT
if (ret == SOCKET_ERROR) {
warn("setsockopt SO_LINGER failed: %s\n", sk_strerror(sk_errno()));
}
#endif
#ifdef __LINUX__
int sndbufsiz = 1024 * 256;
int keepalive = 1;
int keepidle = 60;
int keepinterval = 3;
int keepcount = 5;
struct linger ling;
ret = fcntl(sockfd, F_GETFL, 0);
if (ret < 0) {
warn("fcntl F_GETFL failed: %s\n", strerror(errno));
} else {
ret |= O_NONBLOCK;
ret = fcntl(sockfd, F_SETFL, ret);
if (ret < 0) {
warn("fcntl F_SETFL failed: %s\n", strerror(errno));
}
}
ret = setsockopt(sockfd, SOL_SOCKET, SO_SNDBUF, (const char*)&sndbufsiz, sizeof(sndbufsiz));
if (ret == SOCKET_ERROR) {
warn("setsockopt SO_SNDBUF failed: %s\n", sk_strerror(sk_errno()));
}
ret = setsockopt(sockfd, SOL_SOCKET, SO_KEEPALIVE, (const char*)&keepalive, sizeof(keepalive));
if (ret == SOCKET_ERROR) {
warn("setsockopt SO_KEEPALIVE failed: %s\n", sk_strerror(sk_errno()));
}
ret = setsockopt(sockfd, SOL_TCP, TCP_KEEPIDLE, (const char*)&keepidle, sizeof(keepidle));
if (ret == SOCKET_ERROR) {
warn("setsockopt TCP_KEEPIDLE failed: %s\n", sk_strerror(sk_errno()));
}
ret = setsockopt(sockfd, SOL_TCP, TCP_KEEPINTVL, (const char*)&keepinterval, sizeof(keepinterval));
if (ret == SOCKET_ERROR) {
warn("setsockopt TCP_KEEPINTVL failed: %s\n", sk_strerror(sk_errno()));
}
ret = setsockopt(sockfd, SOL_TCP, TCP_KEEPCNT, (const char*)&keepcount, sizeof(keepcount));
if (ret == SOCKET_ERROR) {
warn("setsockopt TCP_KEEPCNT failed: %s\n", sk_strerror(sk_errno()));
}
memset(&ling, 0, sizeof(ling));
ling.l_onoff = 1;
ling.l_linger = 0;
ret = setsockopt(sockfd, SOL_SOCKET, SO_LINGER, (const char*)&ling, sizeof(ling)); //resolve too many TCP CLOSE_WAIT
if (ret == SOCKET_ERROR) {
warn("setsockopt SO_LINGER failed: %s\n", sk_strerror(sk_errno()));
}
#endif
return 0;
}
static struct rtsp_client_connection *rtsp_new_client_connection (struct rtsp_demo *d)
{
struct rtsp_client_connection *cc = NULL;
struct sockaddr_in inaddr;
SOCKET sockfd;
SOCKLEN addrlen = sizeof(inaddr);
sockfd = accept(d->sockfd, (struct sockaddr*)&inaddr, &addrlen);
if (sockfd == INVALID_SOCKET) {
err("accept failed : %s\n", sk_strerror(sk_errno()));
return NULL;
}
rtsp_set_client_socket(sockfd);//XXX DEBUG
info("new rtsp client comming [peer %s:%u]\n",
inet_ntoa(inaddr.sin_addr), ntohs(inaddr.sin_port));
cc = __alloc_client_connection(d);
if (cc == NULL) {
closesocket(sockfd);
return NULL;
}
cc->state = RTSP_CC_STATE_INIT;
cc->sockfd = sockfd;
cc->peer_addr = inaddr.sin_addr;
cc->peer_port = ntohs(inaddr.sin_port);
return cc;
}
static void rtsp_del_rtp_connection (struct rtsp_client_connection *cc, int isaudio);
static void rtsp_del_client_connection (struct rtsp_client_connection *cc)
{
if (cc) {
info("delete client socket %d [peer %s:%u]\n", cc->sockfd, inet_ntoa(cc->peer_addr), cc->peer_port);
__client_connection_unbind_session(cc);
rtsp_del_rtp_connection(cc, 0);
rtsp_del_rtp_connection(cc, 1);
closesocket(cc->sockfd);
__free_client_connection(cc);
}
}
static int rtsp_path_match (const char *main_path, const char *full_path)
{
char path0[64] = {0};
char path1[64] = {0};
strncpy(path0, main_path, sizeof(path0) - 2);
strncpy(path1, full_path, sizeof(path1) - 2);
if (path0[strlen(path0) - 1] != '/')
strcat(path0, "/");
if (path1[strlen(path1) - 1] != '/')
strcat(path1, "/");
if (strncmp(path0, path1, strlen(path0)))
return 0;
return 1;
}
rtsp_session_handle rtsp_new_session (rtsp_demo_handle demo, const char *path)
{
struct rtsp_demo *d = (struct rtsp_demo*)demo;
struct rtsp_session *s = NULL;
if (!d || !path || strlen(path) == 0) {
err("param invalid\n");
goto fail;
}
TAILQ_FOREACH(s, &d->sessions_qhead, demo_entry) {
if (rtsp_path_match(s->path, path) || rtsp_path_match(path, s->path)) {
err("path:%s (%s) is exist!!!\n", s->path, path);
goto fail;
}
}
s = __alloc_session(d);
if (NULL == s) {
goto fail;
}
strncpy(s->path, path, sizeof(s->path) - 1);
s->vcodec_id = RTSP_CODEC_ID_NONE;
s->acodec_id = RTSP_CODEC_ID_NONE;
info("add session path: %s\n", s->path);
return (rtsp_session_handle)s;
fail:
if (s) {
free(s);
}
return NULL;
}
int rtsp_set_auth (rtsp_session_handle session, int type, const char *user, const char *passwd)
{
struct rtsp_session *s = (struct rtsp_session*)session;
if (!s || (s->auth_type != RTSP_AUTH_TYPE_NONE && s->auth_type != type))
return -1;
switch(type) {
case RTSP_AUTH_TYPE_NONE:
s->auth_type = RTSP_AUTH_TYPE_NONE;
memset(s->auth_user, 0, sizeof(s->auth_user));
memset(s->auth_passwd, 0, sizeof(s->auth_passwd));
break;
case RTSP_AUTH_TYPE_BASIC:
if (!user || !passwd) {
err("please set user/passwd!\n");
return -1;
}
if (strlen(user) < 1 || strlen(user) + 1 > sizeof(s->auth_user)) {
err("user too short or too length!\n");
return -1;
}
if (strlen(passwd) < 1 || strlen(passwd) + 1 > sizeof(s->auth_passwd)) {
err("passwd too short or too length!\n");
return -1;
}
s->auth_type = RTSP_AUTH_TYPE_BASIC;
strcpy(s->auth_user, user);
strcpy(s->auth_passwd, passwd);
break;
case RTSP_AUTH_TYPE_DIGEST:
default:
err("not support this authorization type %d\n", type);
return -1;
}
return 0;
}
int rtsp_set_video (rtsp_session_handle session, int codec_id, const uint8_t *codec_data, int data_len)
{
struct rtsp_session *s = (struct rtsp_session*)session;
if (!s || (s->vcodec_id != RTSP_CODEC_ID_NONE && s->vcodec_id != codec_id))
return -1;
switch (codec_id) {
case RTSP_CODEC_ID_VIDEO_H264:
case RTSP_CODEC_ID_VIDEO_H265:
break;
default:
err("not supported codec_id %d for video\n", codec_id);
return -1;
}
s->vcodec_id = codec_id;
s->vrtpe.pt = VRTP_PT_ID;
s->vrtpe.seq = 0;
s->vrtpe.ssrc = 0;
s->vrtpe.sample_rate = 90000;
memset(&s->vcodec_data, 0, sizeof(s->vcodec_data));
if (codec_data && data_len > 0) {
switch (codec_id) {
case RTSP_CODEC_ID_VIDEO_H264:
if (rtsp_codec_data_parse_from_user_h264(codec_data, data_len, &s->vcodec_data.h264) <= 0) {
warn("parse codec_data failed\n");
break;
}
break;
case RTSP_CODEC_ID_VIDEO_H265:
if (rtsp_codec_data_parse_from_user_h265(codec_data, data_len, &s->vcodec_data.h265) <= 0) {
warn("parse codec_data failed\n");
break;
}
break;
}
}
if (!s->vstreamq) {
//NOTE must VRTP_MAX_NBPKTS+1. Circular Queue requires at least 1 free elements for Empty element
s->vstreamq = streamq_alloc(RTP_MAX_PKTSIZ, VRTP_MAX_NBPKTS + 1);
if (!s->vstreamq) {
err("alloc memory for video rtp queue failed\n");
s->vcodec_id = RTSP_CODEC_ID_NONE;
return -1;
}
}
return 0;
}
int rtsp_set_audio (rtsp_session_handle session, int codec_id, const uint8_t *codec_data, int data_len)
{
struct rtsp_session *s = (struct rtsp_session*)session;
if (!s || (s->acodec_id != RTSP_CODEC_ID_NONE && s->acodec_id != codec_id))
return -1;
switch (codec_id) {
case RTSP_CODEC_ID_AUDIO_G711A:
case RTSP_CODEC_ID_AUDIO_G711U:
case RTSP_CODEC_ID_AUDIO_G726:
case RTSP_CODEC_ID_AUDIO_AAC:
break;
default:
err("not supported codec_id %d for audio\n", codec_id);
return -1;
}
s->acodec_id = codec_id;
s->artpe.pt = ARTP_PT_ID;
s->artpe.seq = 0;
s->artpe.ssrc = 0;
s->artpe.sample_rate = 8000;
memset(&s->acodec_data, 0, sizeof(s->acodec_data));
if (codec_data && data_len > 0) {
switch (codec_id) {
case RTSP_CODEC_ID_AUDIO_G726:
if (rtsp_codec_data_parse_from_user_g726(codec_data, data_len, &s->acodec_data.g726) <= 0) {
warn("parse codec_data failed\n");
break;
}
break;
case RTSP_CODEC_ID_AUDIO_AAC:
if (rtsp_codec_data_parse_from_user_aac(codec_data, data_len, &s->acodec_data.aac) <= 0) {
warn("parse codec_data failed\n");
break;
}
s->artpe.sample_rate = s->acodec_data.aac.sample_rate;
break;
}
}
if (!s->astreamq) {
//NOTE must VRTP_MAX_NBPKTS+1. Circular Queue requires at least 1 free elements for Empty element
s->astreamq = streamq_alloc(RTP_MAX_PKTSIZ, ARTP_MAX_NBPKTS + 1);
if (!s->astreamq) {
err("alloc memory for audio rtp queue failed\n");
s->acodec_id = RTSP_CODEC_ID_NONE;
return -1;
}
}
return 0;
}
void rtsp_del_session (rtsp_session_handle session)
{
struct rtsp_session *s = (struct rtsp_session*)session;
if (s) {
struct rtsp_client_connection *cc;
while ((cc = TAILQ_FIRST(&s->connections_qhead))) {
rtsp_del_client_connection(cc);
}
info("del session path: %s\n", s->path);
if (s->vstreamq)
streamq_free(s->vstreamq);
if (s->astreamq)
streamq_free(s->astreamq);
__free_session(s);
}
}
void rtsp_del_demo (rtsp_demo_handle demo)
{
struct rtsp_demo *d = (struct rtsp_demo*)demo;
if (d) {
struct rtsp_session *s;
struct rtsp_client_connection *cc;
while ((cc = TAILQ_FIRST(&d->connections_qhead))) {
rtsp_del_client_connection(cc);
}
while ((s = TAILQ_FIRST(&d->sessions_qhead))) {
rtsp_del_session(s);
}
closesocket(d->sockfd);
__free_demo(d);
}
}
static int build_simple_sdp (struct rtsp_session *s, const char *ip, const char *uri, char *sdpbuf, int maxlen)
{
char *p = sdpbuf;
p += sprintf(p, "v=0\r\n");
p += sprintf(p, "o=- 0 0 IN IP4 %s\r\n", ip ? ip : "0.0.0.0");
p += sprintf(p, "s=rtsp_demo\r\n");
p += sprintf(p, "t=0 0\r\n");
p += sprintf(p, "c=IN IP4 %s\r\n", ip ? ip : "0.0.0.0");
p += sprintf(p, "a=control:%s\r\n", uri ? uri : "*");
p += sprintf(p, "a=range:npt=0-\r\n");
if (s->vcodec_id != RTSP_CODEC_ID_NONE) {
switch (s->vcodec_id) {
case RTSP_CODEC_ID_VIDEO_H264:
p += rtsp_build_sdp_media_attr_h264(VRTP_PT_ID, s->vrtpe.sample_rate,
&s->vcodec_data.h264, p, maxlen - (p - sdpbuf));
break;
case RTSP_CODEC_ID_VIDEO_H265:
p += rtsp_build_sdp_media_attr_h265(VRTP_PT_ID, s->vrtpe.sample_rate,
&s->vcodec_data.h265, p, maxlen - (p - sdpbuf));
break;
}
if (uri)
p += sprintf(p, "a=control:%s/%s\r\n", uri, VRTSP_SUBPATH);
else
p += sprintf(p, "a=control:%s\r\n", VRTSP_SUBPATH);
}
if (s->acodec_id != RTSP_CODEC_ID_NONE) {
switch (s->acodec_id) {
case RTSP_CODEC_ID_AUDIO_G711A:
p += rtsp_build_sdp_media_attr_g711a(ARTP_PT_ID, s->artpe.sample_rate,
p, maxlen - (p - sdpbuf));
break;
case RTSP_CODEC_ID_AUDIO_G711U:
p += rtsp_build_sdp_media_attr_g711u(ARTP_PT_ID, s->artpe.sample_rate,
p, maxlen - (p - sdpbuf));
break;
case RTSP_CODEC_ID_AUDIO_G726:
p += rtsp_build_sdp_media_attr_g726(ARTP_PT_ID, s->artpe.sample_rate,
&s->acodec_data.g726, p, maxlen - (p - sdpbuf));
break;
case RTSP_CODEC_ID_AUDIO_AAC:
p += rtsp_build_sdp_media_attr_aac(ARTP_PT_ID, s->artpe.sample_rate,
&s->acodec_data.aac, p, maxlen - (p - sdpbuf));
break;
}
if (uri)
p += sprintf(p, "a=control:%s/%s\r\n", uri, ARTSP_SUBPATH);
else
p += sprintf(p, "a=control:%s\r\n", ARTSP_SUBPATH);
}
return (p - sdpbuf);
}
static int rtsp_authorization_request (struct rtsp_client_connection *cc, const rtsp_msg_s *reqmsg, rtsp_msg_s *resmsg)
{
// struct rtsp_demo *d = cc->demo;
struct rtsp_session *s = cc->session;
char basic_up[32] = "";
char basic_b64a[64] = "";
char basic_b64b[64] = "";
switch (s->auth_type) {
case RTSP_AUTH_TYPE_NONE:
return 0;
case RTSP_AUTH_TYPE_BASIC:
if (rtsp_msg_get_auth_basic(reqmsg, basic_b64a, sizeof(basic_b64a))) {
dbg("authorization get fail. [peer %s:%u]\n", inet_ntoa(cc->peer_addr), cc->peer_port);
rtsp_msg_set_www_auth_basic(resmsg, "rtsp_demo");
rtsp_msg_set_response(resmsg, 401);//Unauthorized
return 1;
}
sprintf(basic_up, "%s:%s", s->auth_user, s->auth_passwd);
base64_encode(basic_b64b, sizeof(basic_b64b), (uint8_t*)basic_up, strlen(basic_up));
if (strcmp(basic_b64a, basic_b64b)) {
warn("authorization basic fail, my %s his %s. [peer %s:%u]\n",
basic_b64b, basic_b64a, inet_ntoa(cc->peer_addr), cc->peer_port);
rtsp_msg_set_www_auth_basic(resmsg, "rtsp_demo");
rtsp_msg_set_response(resmsg, 401);//Unauthorized
return 1;
}
break;
case RTSP_AUTH_TYPE_DIGEST:
//TODO
default:
break;
}
return 0;
}
static int rtsp_handle_OPTIONS (struct rtsp_client_connection *cc, const rtsp_msg_s *reqmsg, rtsp_msg_s *resmsg)
{
// struct rtsp_demo *d = cc->demo;
// struct rtsp_session *s = cc->session;
uint32_t public_ = 0;
dbg("\n");
public_ |= RTSP_MSG_PUBLIC_OPTIONS;
public_ |= RTSP_MSG_PUBLIC_DESCRIBE;
public_ |= RTSP_MSG_PUBLIC_SETUP;
public_ |= RTSP_MSG_PUBLIC_PAUSE;
public_ |= RTSP_MSG_PUBLIC_PLAY;
public_ |= RTSP_MSG_PUBLIC_TEARDOWN;
rtsp_msg_set_public(resmsg, public_);
return 0;
}
static int rtsp_handle_DESCRIBE (struct rtsp_client_connection *cc, const rtsp_msg_s *reqmsg, rtsp_msg_s *resmsg)
{
// struct rtsp_demo *d = cc->demo;
struct rtsp_session *s = cc->session;
char sdpbuf[1024] = "";
int sdplen = 0;
uint32_t accept = 0;
const rtsp_msg_uri_s *puri = &reqmsg->hdrs.startline.reqline.uri;
char uri[128] = "";
dbg("\n");
if (rtsp_msg_get_accept(reqmsg, &accept) < 0 && !(accept & RTSP_MSG_ACCEPT_SDP)) {
rtsp_msg_set_response(resmsg, 406);
warn("client not support accept SDP\n");
return 0;
}
//build uri
sprintf(uri, "rtsp://%s", puri->ipaddr);
if (puri->port != 0)
sprintf(uri + strlen(uri), ":%u", puri->port);
strcat(uri, s->path);
sdplen = build_simple_sdp(s, puri->ipaddr, uri, sdpbuf, sizeof(sdpbuf));
rtsp_msg_set_content_type(resmsg, RTSP_MSG_CONTENT_TYPE_SDP);
rtsp_msg_set_content_length(resmsg, sdplen);
rtsp_msg_set_x_accept_dynamic_rate(resmsg, 1); //for QuickTime Player
resmsg->body.body = rtsp_mem_dup(sdpbuf, sdplen);
return 0;
}
static unsigned long __rtp_gen_ssrc (void)
{
static unsigned long ssrc = 0x22345678;
return ssrc++;
}
static int __rtp_udp_local_setup (struct rtp_connection *rtp)
{
int i, ret;
for (i = 65536/4*3/2*2; i < 65536; i += 2) {
SOCKET rtpsock, rtcpsock;
struct sockaddr_in inaddr;
uint16_t port;
rtpsock = socket(AF_INET, SOCK_DGRAM, 0);
if (rtpsock == INVALID_SOCKET) {
err("create rtp socket failed: %s\n", sk_strerror(sk_errno()));
return -1;
}
rtcpsock = socket(AF_INET, SOCK_DGRAM, 0);
if (rtcpsock == INVALID_SOCKET) {
err("create rtcp socket failed: %s\n", sk_strerror(sk_errno()));
closesocket(rtpsock);
return -1;
}
port = i;
memset(&inaddr, 0, sizeof(inaddr));
inaddr.sin_family = AF_INET;
inaddr.sin_addr.s_addr = htonl(INADDR_ANY);
inaddr.sin_port = htons(port);
ret = bind(rtpsock, (struct sockaddr*)&inaddr, sizeof(inaddr));
if (ret == SOCKET_ERROR) {
closesocket(rtpsock);
closesocket(rtcpsock);
continue;
}
port = i + 1;
memset(&inaddr, 0, sizeof(inaddr));
inaddr.sin_family = AF_INET;
inaddr.sin_addr.s_addr = htonl(INADDR_ANY);
inaddr.sin_port = htons(port);
ret = bind(rtcpsock, (struct sockaddr*)&inaddr, sizeof(inaddr));
if (ret == SOCKET_ERROR) {
closesocket(rtpsock);
closesocket(rtcpsock);
continue;
}
#ifdef __WIN32__
{
unsigned long nonblocked = 1;
ret = ioctlsocket(rtpsock, FIONBIO, &nonblocked);
if (ret == SOCKET_ERROR) {
warn("ioctlsocket FIONBIO failed: %s\n", sk_strerror(sk_errno()));
}
ret = ioctlsocket(rtcpsock, FIONBIO, &nonblocked);
if (ret == SOCKET_ERROR) {
warn("ioctlsocket FIONBIO failed: %s\n", sk_strerror(sk_errno()));
}
}
#endif
#ifdef __LINUX__
ret = fcntl(rtpsock, F_GETFL, 0);
if (ret < 0) {
warn("fcntl F_GETFL failed: %s\n", strerror(errno));
} else {
ret |= O_NONBLOCK;
ret = fcntl(rtpsock, F_SETFL, ret);
if (ret < 0) {
warn("fcntl F_SETFL failed: %s\n", strerror(errno));
}
}
ret = fcntl(rtcpsock, F_GETFL, 0);
if (ret < 0) {
warn("fcntl F_GETFL failed: %s\n", strerror(errno));
} else {
ret |= O_NONBLOCK;
ret = fcntl(rtcpsock, F_SETFL, ret);
if (ret < 0) {
warn("fcntl F_SETFL failed: %s\n", strerror(errno));
}
}
#endif
rtp->is_over_tcp = 0;
rtp->udp_sockfd[0] = rtpsock;
rtp->udp_sockfd[1] = rtcpsock;
rtp->udp_localport[0] = i;
rtp->udp_localport[1] = i + 1;
return 0;
}
err("not found free local port for rtp/rtcp\n");
return -1;
}
static int rtsp_new_rtp_connection (struct rtsp_client_connection *cc, int isaudio, int istcp, int peer_port, int peer_interleaved)
{
struct rtp_connection *rtp;
struct in_addr peer_addr = cc->peer_addr;
rtp = (struct rtp_connection*) calloc(1, sizeof(struct rtp_connection));
if (rtp == NULL) {
err("alloc mem for rtp session failed: %s\n", strerror(errno));
return -1;
}
rtp->is_over_tcp = !!istcp;
rtp->peer_addr = peer_addr;
rtp->ssrc = __rtp_gen_ssrc();
if (istcp) {
rtp->tcp_interleaved[0] = peer_interleaved;
rtp->tcp_interleaved[1] = peer_interleaved + 1;
dbg("new rtp over tcp for %s ssrc:%08x peer_addr:%s interleaved:%u-%u [peer %s:%u]\n",
(isaudio ? "audio" : "video"),
rtp->ssrc,
inet_ntoa(peer_addr),
rtp->tcp_interleaved[0], rtp->tcp_interleaved[1],
inet_ntoa(cc->peer_addr), cc->peer_port);
} else {
if (__rtp_udp_local_setup(rtp) < 0) {
free(rtp);
return -1;
}
rtp->udp_peerport[0] = peer_port;
rtp->udp_peerport[1] = peer_port + 1;
dbg("new rtp over udp for %s ssrc:%08x local_port:%u-%u peer_addr:%s peer_port:%u-%u [peer %s:%u]\n",
(isaudio ? "audio" : "video"),
rtp->ssrc,
rtp->udp_localport[0], rtp->udp_localport[1],
inet_ntoa(peer_addr),
rtp->udp_peerport[0], rtp->udp_peerport[1],
inet_ntoa(cc->peer_addr), cc->peer_port);
}
if (isaudio) {
cc->artp = rtp;
} else {
cc->vrtp = rtp;
}
return 0;
}
static void rtsp_del_rtp_connection (struct rtsp_client_connection *cc, int isaudio)
{
struct rtp_connection *rtp;
if (isaudio) {
rtp = cc->artp;
cc->artp = NULL;
} else {
rtp = cc->vrtp;
cc->vrtp = NULL;
}
if (rtp) {
if (!(rtp->is_over_tcp)) {
closesocket(rtp->udp_sockfd[0]);
closesocket(rtp->udp_sockfd[1]);
}
free(rtp);
}
}