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Support dual stack by manually creating and binding socket on Windows platform (#6548)

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* dual stack on windows

* fix memory leak

* some changes suggested by @tearfur

* close winsocket at stop_server and code style issues

* remove WSA relevant codes since no need

* fix clang-tidy warnings

* fix clang-tidy warnings v2

---------

Co-authored-by: Mike Gelfand <mikedld@users.noreply.github.com>
Co-authored-by: zyhe <zhuoyuan@pku.edu.cn>
This commit is contained in:
herbyuan
2025-11-10 08:11:10 +08:00
committed by GitHub
parent b99232777e
commit 1ff390f1eb
1 changed files with 53 additions and 1 deletions
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54
libtransmission/rpc-server.cc
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@@ -700,6 +700,58 @@ void rpc_server_start_retry_cancel(tr_rpc_server* server)
server->start_retry_counter = 0;
}
int tr_evhttp_bind_socket(struct evhttp* httpd, char const* address, ev_uint16_t port)
{
#ifdef _WIN32
struct addrinfo* result = nullptr;
struct addrinfo hints = {};
ZeroMemory(&hints, sizeof(hints));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
hints.ai_flags = AI_PASSIVE;
if (getaddrinfo(address, std::to_string(port).c_str(), &hints, &result) != 0)
{
return evhttp_bind_socket(httpd, address, port);
}
int const fd = socket(result->ai_family, result->ai_socktype, result->ai_protocol);
if (fd == INVALID_SOCKET)
{
freeaddrinfo(result);
return evhttp_bind_socket(httpd, address, port);
}
evutil_make_socket_nonblocking(fd);
evutil_make_listen_socket_reuseable(fd);
// Making dual stack
if (result->ai_family == AF_INET6)
{
int off = 0;
setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, reinterpret_cast<char*>(&off), sizeof(off));
}
// Set keep alive
int on = 1;
setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, reinterpret_cast<char*>(&on), sizeof(on));
if (bind(fd, result->ai_addr, result->ai_addrlen) != 0 || listen(fd, 128) == -1)
{
closesocket(fd);
freeaddrinfo(result);
return evhttp_bind_socket(httpd, address, port);
}
if (evhttp_accept_socket(httpd, fd) == 0)
{
freeaddrinfo(result);
return 0;
}
// Fallback
closesocket(fd);
freeaddrinfo(result);
#endif
return evhttp_bind_socket(httpd, address, port);
}
void start_server(tr_rpc_server* server)
{
if (server->httpd)
@@ -717,7 +769,7 @@ void start_server(tr_rpc_server* server)
bool const success = server->bind_address_->is_unix_addr() ?
bindUnixSocket(base, httpd, address.c_str(), server->settings().socket_mode) :
(evhttp_bind_socket(httpd, address.c_str(), port.host()) != -1);
(tr_evhttp_bind_socket(httpd, address.c_str(), port.host()) != -1);
auto const addr_port_str = server->bind_address_->to_string(port);