void rtsp_tcp_read_cb(struct ev_loop *loop, ev_io *w,
ATTR_UNUSED int revents)
{
guint8 buffer[RTSP_BUFFERSIZE + 1] = { 0, }; /* +1 to control the final '\0' */
int read_size;
RTSP_Client *rtsp = w->data;
int sd = rtsp->sd;
/* if we're receiving data for an HTTP tunnel, we have to run it
through the HTTP client's buffer. */
if ( rtsp->pair != NULL )
rtsp = rtsp->pair->http_client;
if ( (read_size = recv(sd,
buffer,
sizeof(buffer),
0) ) <= 0 )
goto client_close;
stats_account_read(rtsp, read_size);
if (rtsp->input->len + read_size > RTSP_BUFFERSIZE) {
xlog(LOG_DBG,
"RTSP buffer overflow (input RTSP message is most likely invalid).\n");
goto server_close;
}
g_byte_array_append(rtsp->input, (guint8*)buffer, read_size);
xlog(LOG_DBG, "rtsp request probe is %d. localhost:%s remote:%s", rtsp->pending_request, rtsp->local_host, rtsp->remote_host);
RTSP_handler(rtsp);
return;
client_close:
xlog(LOG_INF, "RTSP connection closed by client.");
goto disconnect;
server_close:
xlog(LOG_INF, "RTSP connection closed by server.");
goto disconnect;
disconnect:
ev_unloop(loop, EVUNLOOP_ONE);
}
int RtspServer(RTSP_buffer *rtsp)
{
fd_set rset,wset; /*读写I/O描述集*/
struct timeval t;
int size;
static char buffer[RTSP_BUFFERSIZE+1]; /* +1 to control the final '\0'*/
int n;
int res;
struct sockaddr ClientAddr;
#ifdef RTSP_DEBUG
// fprintf(stderr, "%s, %d\n", __FUNCTION__, __LINE__);
#endif
// memset((void *)&ClientAddr,0,sizeof(ClientAddr));
if (rtsp == NULL)
{
return ERR_NOERROR;
}
/*变量初始化*/
FD_ZERO(&rset);
FD_ZERO(&wset);
t.tv_sec=0; /*select 时间间隔*/
t.tv_usec=100000;
FD_SET(rtsp->fd,&rset);
/*调用select等待对应描述符变化*/
if (select(g_s32Maxfd+1,&rset,0,0,&t)<0)
{
fprintf(stderr,"select error %s %d\n", __FILE__, __LINE__);
send_reply(500, NULL, rtsp);
return ERR_GENERIC; //errore interno al server
}
/*有可供读进的rtsp包*/
if (FD_ISSET(rtsp->fd,&rset))
{
memset(buffer,0,sizeof(buffer));
size=sizeof(buffer)-1; /*最后一位用于填充字符串结束标识*/
/*读入数据到缓冲区中*/
#ifdef RTSP_DEBUG
// fprintf(stderr, "tcp_read, %d\n", __LINE__);
#endif
n= tcp_read(rtsp->fd, buffer, size, &ClientAddr);
if (n==0)
{
return ERR_CONNECTION_CLOSE;
}
if (n<0)
{
fprintf(stderr,"read() error %s %d\n", __FILE__, __LINE__);
send_reply(500, NULL, rtsp); //服务器内部错误消息
return ERR_GENERIC;
}
//检查读入的数据是否产生溢出
if (rtsp->in_size+n>RTSP_BUFFERSIZE)
{
fprintf(stderr,"RTSP buffer overflow (input RTSP message is most likely invalid).\n");
send_reply(500, NULL, rtsp);
return ERR_GENERIC;//数据溢出错误
}
#ifdef RTSP_DEBUG
fprintf(stderr,"INPUT_BUFFER was:%s\n", buffer);
#endif
/*填充数据*/
memcpy(&(rtsp->in_buffer[rtsp->in_size]),buffer,n);
rtsp->in_size+=n;
//清空buffer
memset(buffer, 0, n);
//添加客户端地址信息
memcpy( &rtsp->stClientAddr, &ClientAddr, sizeof(ClientAddr));
/*处理缓冲区的数据，进行rtsp处理*/
if ((res=RTSP_handler(rtsp))==ERR_GENERIC)
{
fprintf(stderr,"Invalid input message.\n");
return ERR_NOERROR;
}
}
/*有发送数据*/
if (rtsp->out_size>0)
{
//将数据发送出去
n= tcp_write(rtsp->fd,rtsp->out_buffer,rtsp->out_size);
printf("5\r\n");
if (n<0)
{
fprintf(stderr,"tcp_write error %s %i\n", __FILE__, __LINE__);
send_reply(500, NULL, rtsp);
return ERR_GENERIC; //errore interno al server
}
#ifdef RTSP_DEBUG
//fprintf(stderr,"OUTPUT_BUFFER length %d\n%s\n", rtsp->out_size, rtsp->out_buffer);
#endif
//清空发送缓冲区
memset(rtsp->out_buffer, 0, rtsp->out_size);
rtsp->out_size = 0;
}
//如果需要RTCP在此出加入对RTCP数据的接收，并存放在缓存中。
//继而在schedule_do线程中对其处理。
//rtcp控制处理,检查读入RTCP数据报
return ERR_NOERROR;
}
