(svn r15163) -Change/Fix: use a non-blocking method to resolve the hostname and connect to game servers.

2009-01-20 11:28:18 +00:00
parent 12ff4cf083
commit 206841ba5f
11 changed files with 339 additions and 173 deletions
--- a/src/network/core/tcp_connect.cpp
+++ b/src/network/core/tcp_connect.cpp
@@ -0,0 +1,99 @@
+/* $Id$ */
+
+/**
+ * @file tcp_connect.cpp Basic functions to create connections without blocking.
+ */
+
+#ifdef ENABLE_NETWORK
+
+#include "../../stdafx.h"
+#include "../../debug.h"
+#include "../../core/smallvec_type.hpp"
+#include "../../thread.h"
+
+#include "tcp.h"
+
+/** List of connections that are currently being created */
+static SmallVector<TCPConnecter *,  1> _tcp_connecters;
+
+TCPConnecter::TCPConnecter(const NetworkAddress &address) :
+	connected(false),
+	aborted(false),
+	killed(false),
+	sock(INVALID_SOCKET),
+	address(address)
+{
+	*_tcp_connecters.Append() = this;
+	if (!ThreadObject::New(TCPConnecter::ThreadEntry, this, &this->thread)) {
+		this->Connect();
+	}
+}
+
+void TCPConnecter::Connect()
+{
+	DEBUG(net, 1, "Connecting to %s %d", address.GetHostname(), address.GetPort());
+
+	this->sock = socket(AF_INET, SOCK_STREAM, 0);
+	if (this->sock == INVALID_SOCKET) {
+		this->aborted = true;
+		return;
+	}
+
+	if (!SetNoDelay(this->sock)) DEBUG(net, 1, "Setting TCP_NODELAY failed");
+
+	struct sockaddr_in sin;
+	sin.sin_family = AF_INET;
+	sin.sin_addr.s_addr = address.GetIP();
+	sin.sin_port = htons(address.GetPort());
+
+	/* We failed to connect for which reason what so ever */
+	if (connect(this->sock, (struct sockaddr*) &sin, sizeof(sin)) != 0) {
+		closesocket(this->sock);
+		this->sock = INVALID_SOCKET;
+		this->aborted = true;
+		return;
+	}
+
+	if (!SetNonBlocking(this->sock)) DEBUG(net, 0, "Setting non-blocking mode failed");
+
+	this->connected = true;
+}
+
+
+/* static */ void TCPConnecter::ThreadEntry(void *param)
+{
+	static_cast<TCPConnecter*>(param)->Connect();
+}
+
+/* static */ void TCPConnecter::CheckCallbacks()
+{
+	for (TCPConnecter **iter = _tcp_connecters.Begin(); iter < _tcp_connecters.End(); /* nothing */) {
+		TCPConnecter *cur = *iter;
+		if ((cur->connected || cur->aborted) && cur->killed) {
+			_tcp_connecters.Erase(iter);
+			if (cur->sock != INVALID_SOCKET) closesocket(cur->sock);
+			delete cur;
+			continue;
+		}
+		if (cur->connected) {
+			_tcp_connecters.Erase(iter);
+			cur->OnConnect(cur->sock);
+			delete cur;
+			continue;
+		}
+		if (cur->aborted) {
+			_tcp_connecters.Erase(iter);
+			cur->OnFailure();
+			delete cur;
+			continue;
+		}
+		iter++;
+	}
+}
+
+/* static */ void TCPConnecter::KillAll()
+{
+	for (TCPConnecter **iter = _tcp_connecters.Begin(); iter != _tcp_connecters.End(); iter++) (*iter)->killed = true;
+}
+
+#endif /* ENABLE_NETWORK */