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Refine HTTP-FLV latency, support realtime mode.3.0.38

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This commit is contained in:
winlin 2018-08-05 20:30:04 +08:00
parent 03ac48f8fa
commit d607c7f905
7 changed files with 121 additions and 65 deletions
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84
trunk/src/app/srs_app_conn.cpp
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@ -23,6 +23,7 @@
#include <srs_app_conn.hpp>
#include <netinet/tcp.h>
using namespace std;
#include <srs_kernel_log.hpp>
@ -95,6 +96,89 @@ srs_error_t SrsConnection::start()
return err;
}
srs_error_t SrsConnection::set_tcp_nodelay(bool v)
{
srs_error_t err = srs_success;
int r0 = 0;
socklen_t nb_v = sizeof(int);
int fd = srs_netfd_fileno(stfd);
int ov = 0;
if ((r0 = getsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &ov, &nb_v)) != 0) {
return srs_error_new(ERROR_SOCKET_NO_NODELAY, "getsockopt fd=%d, r0=%d", fd, r0);
}
#ifndef SRS_PERF_TCP_NODELAY
srs_warn("ignore TCP_NODELAY, fd=%d, ov=%d", fd, ov);
return err;
#endif
int iv = (v? 1:0);
if ((r0 = setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &iv, nb_v)) != 0) {
return srs_error_new(ERROR_SOCKET_NO_NODELAY, "setsockopt fd=%d, r0=%v", fd, r0);
}
if ((r0 = getsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &iv, &nb_v)) != 0) {
return srs_error_new(ERROR_SOCKET_NO_NODELAY, "getsockopt fd=%d, r0=%d", fd, r0);
}
srs_trace("set fd=%d TCP_NODELAY %d=>%d", fd, ov, iv);
return err;
}
srs_error_t SrsConnection::set_socket_buffer(int buffer_ms)
{
srs_error_t err = srs_success;
int r0 = 0;
int fd = srs_netfd_fileno(stfd);
socklen_t nb_v = sizeof(int);
int ov = 0;
if ((r0 = getsockopt(fd, SOL_SOCKET, SO_SNDBUF, &ov, &nb_v)) != 0) {
return srs_error_new(ERROR_SOCKET_SNDBUF, "getsockopt fd=%d, r0=%d", fd, r0);
}
#ifndef SRS_PERF_MW_SO_SNDBUF
srs_warn("ignore SO_SNDBUF, fd=%d, ov=%d", fd, ov);
return err;
#endif
// the bytes:
// 4KB=4096, 8KB=8192, 16KB=16384, 32KB=32768, 64KB=65536,
// 128KB=131072, 256KB=262144, 512KB=524288
// the buffer should set to sleep*kbps/8,
// for example, your system delivery stream in 1000kbps,
// sleep 800ms for small bytes, the buffer should set to:
// 800*1000/8=100000B(about 128KB).
// other examples:
// 2000*3000/8=750000B(about 732KB).
// 2000*5000/8=1250000B(about 1220KB).
int kbps = 4000;
int iv = buffer_ms * kbps / 8;
// socket send buffer, system will double it.
iv = iv / 2;
// override the send buffer by macro.
#ifdef SRS_PERF_SO_SNDBUF_SIZE
iv = SRS_PERF_SO_SNDBUF_SIZE / 2;
#endif
// set the socket send buffer when required larger buffer
if (setsockopt(fd, SOL_SOCKET, SO_SNDBUF, &iv, nb_v) < 0) {
return srs_error_new(ERROR_SOCKET_SNDBUF, "setsockopt fd=%d, r0=%v", fd, r0);
}
if ((r0 = getsockopt(fd, SOL_SOCKET, SO_SNDBUF, &iv, &nb_v)) != 0) {
return srs_error_new(ERROR_SOCKET_SNDBUF, "getsockopt fd=%d, r0=%d", fd, r0);
}
srs_trace("set fd=%d, SO_SNDBUF=%d=>%d, buffer=%dms", fd, ov, iv, buffer_ms);
return err;
}
srs_error_t SrsConnection::cycle()
{
srs_error_t err = do_cycle();