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Don't exit if accept fails due to no more file descriptors #227

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Merged
merged 1 commit into from
Sep 30, 2019
Merged

Don't exit if accept fails due to no more file descriptors #227

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7 changes: 7 additions & 0 deletions httplib.h
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Original file line number Diff line number Diff line change
Expand Up @@ -98,6 +98,7 @@ typedef int socket_t;
#include <assert.h>
#include <atomic>
#include <condition_variable>
#include <errno.h>
#include <fcntl.h>
#include <fstream>
#include <functional>
Expand Down Expand Up @@ -2550,6 +2551,12 @@ inline bool Server::listen_internal() {
socket_t sock = accept(svr_sock_, nullptr, nullptr);

if (sock == INVALID_SOCKET) {
if (errno == EMFILE) {
// The per-process limit of open file descriptors has been reached.
// Try to accept new connections after a short sleep.
std::this_thread::sleep_for(std::chrono::milliseconds(1));
continue;
}
if (svr_sock_ != INVALID_SOCKET) {
detail::close_socket(svr_sock_);
ret = false;
Expand Down