LINK: Don't silently fail when unable to connect to Dolphin

git-svn-id: https://svn.code.sf.net/p/vbam/code/branches/bgk-link@1138 a31d4220-a93d-0410-bf67-fe4944624d44

src/gba/GBALink.cpp

@@ -451,12 +451,20 @@ void StartGPLink(u16 value)
 	}
 }
 
-static void JoyBusConnect()
+static ConnectionState JoyBusConnect()
 {
 	delete dol;
 	dol = NULL;
 
-	dol = new GBASockClient(joybusHostAddr);
+	dol = new GBASockClient();
+	bool connected = dol->Connect(joybusHostAddr);
+
+	if (connected) {
+		return LINK_OK;
+	} else {
+		systemMessage(0, N_("Error, could not connect to Dolphin"));
+		return LINK_ERROR;
+	}
 }
 
 static void JoyBusShutdown()
@@ -1171,10 +1179,10 @@ ConnectionState InitLink(LinkMode mode)
 
 	gba_connection_state = LINK_OK;
 
-    if (mode == LINK_GAMECUBE_DOLPHIN) {
-        JoyBusConnect();
-    } else if (mode == LINK_CABLE_IPC || mode == LINK_RFU_IPC) {
-    	gba_connection_state = InitIPC();
+	if (mode == LINK_GAMECUBE_DOLPHIN) {
+		gba_connection_state = JoyBusConnect();
+	} else if (mode == LINK_CABLE_IPC || mode == LINK_RFU_IPC) {
+		gba_connection_state = InitIPC();
 	} else if (mode == LINK_CABLE_SOCKET) {
 		linkid = 0;
 

src/gba/GBASockClient.cpp

@@ -4,15 +4,19 @@
 
 // Currently only for Joybus communications
 
-GBASockClient::GBASockClient(sf::IPAddress _server_addr)
+GBASockClient::GBASockClient()
 {
-	if (!_server_addr.IsValid())
-		server_addr = sf::IPAddress::LocalHost;
-	else
+	server_addr = sf::IPAddress::LocalHost;
+}
+
+bool GBASockClient::Connect(sf::IPAddress _server_addr) {
+	if (_server_addr.IsValid())
 		server_addr = _server_addr;
 
-	client.Connect(0xd6ba, server_addr);
+	sf::Socket::Status result = client.Connect(0xd6ba, server_addr);
 	//client.SetBlocking(false);
+
+	return result == sf::Socket::Done;
 }
 
 GBASockClient::~GBASockClient()

src/gba/GBASockClient.h

@@ -6,9 +6,10 @@
 class GBASockClient
 {
 public:
-	GBASockClient(sf::IPAddress server_addr);
+	GBASockClient();
 	~GBASockClient();
 
+	bool Connect(sf::IPAddress server_addr);
 	void Send(std::vector<char> data);
 	char ReceiveCmd(char* data_in);