tdlight-team/tdlight
tdlight-team/tdlight
1
1
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Improve maximize_buffer.

Browse Source
This commit is contained in:
levlam 2021-06-03 04:11:11 +03:00
parent 69cd3e9ced
commit 1ab2f9fe9d
1 changed files with 10 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
tdutils/td/utils/port/UdpSocketFd.cpp
View File

@ -790,19 +790,27 @@ const NativeFd &UdpSocketFd::get_native_fd() const {
#if TD_PORT_POSIX
static Result<uint32> maximize_buffer(int socket_fd, int optname, uint32 max) {
if (setsockopt(socket_fd, SOL_SOCKET, optname, &max, sizeof(max)) == 0) {
// fast path
return max;
}
/* Start with the default size. */
uint32 old_size;
uint32 old_size = 0;
socklen_t intsize = sizeof(old_size);
if (getsockopt(socket_fd, SOL_SOCKET, optname, &old_size, &intsize)) {
return OS_ERROR("getsockopt() failed");
}
#if TD_LINUX
old_size /= 2;
#endif
/* Binary-search for the real maximum. */
uint32 last_good = old_size;
uint32 min = old_size;
while (min <= max) {
uint32 avg = min + (max - min) / 2;
if (setsockopt(socket_fd, SOL_SOCKET, optname, &avg, intsize) == 0) {
if (setsockopt(socket_fd, SOL_SOCKET, optname, &avg, sizeof(avg)) == 0) {
last_good = avg;
min = avg + 1;
} else {