fix: check uv_ip*_addr result

Author: littleangel0309

emmy_debugger/include/emmy_debugger/transporter/transporter.h

@@ -84,4 +84,6 @@ class Transporter {
 	void Run();
 	virtual void OnDisconnect();
 	virtual void OnConnect(bool suc);
+    // helper for both client and server
+	static bool ParseSocketAddress(const std::string &host, int port, sockaddr_storage *addr, std::string &err);
 };

emmy_debugger/src/transporter/socket_client_transporter.cpp

@@ -59,10 +59,9 @@ bool SocketClientTransporter::Connect(const std::string& host, int port, std::st
 	uvClient.data = this;
 	uv_tcp_init(loop, &uvClient);
 	struct sockaddr_storage addr;
-	uv_ip6_addr(host.c_str(), port, (struct sockaddr_in6 *) &addr);// 尝试使用IPv6地址
-
-	if (addr.ss_family == AF_UNSPEC) {
-		uv_ip4_addr(host.c_str(), port, (struct sockaddr_in *) &addr);// 如果失败，改用IPv4地址
+	bool addr_suc = ParseSocketAddress(host, port, &addr, err);
+	if (!addr_suc) {
+		return false;
 	}
 
 	connect_req.data = this;

emmy_debugger/src/transporter/socket_server_transporter.cpp

@@ -49,10 +49,9 @@ bool SocketServerTransporter::Listen(const std::string& host, int port, std::str
 	uvServer.data = this;
 	uv_tcp_init(loop, &uvServer);
 	struct sockaddr_storage addr;
-	uv_ip6_addr(host.c_str(), port, (struct sockaddr_in6 *) &addr);// 尝试使用IPv6地址
-
-	if (addr.ss_family == AF_UNSPEC) {
-		uv_ip4_addr(host.c_str(), port, (struct sockaddr_in *) &addr);// 如果失败，改用IPv4地址
+	bool addr_suc = ParseSocketAddress(host, port, &addr, err);
+	if (!addr_suc) {
+		return false;
 	}
 
 	uv_tcp_bind(&uvServer, reinterpret_cast<const struct sockaddr*>(&addr), 0);

emmy_debugger/src/transporter/transporter.cpp

@@ -244,3 +244,22 @@ int Transporter::Stop()
 	running = false;
 	return 0;
 }
+
+bool Transporter::ParseSocketAddress(const std::string &host, int port, sockaddr_storage *addr, std::string &err)
+{
+	const int ip6_addr_res = uv_ip6_addr(host.c_str(), port, reinterpret_cast<sockaddr_in6 *>(addr));// 尝试使用IPv6地址
+	if (ip6_addr_res == 0) {
+		return true;
+	}
+
+	const int ip4_addr_res = uv_ip4_addr(host.c_str(), port, reinterpret_cast<sockaddr_in *>(addr));// 如果失败，改用IPv4地址
+	if (ip4_addr_res == 0) {
+		return true;
+	}
+
+	err = "Invalid host. IPv6 error: ";
+	err += uv_strerror(ip6_addr_res);
+	err += ". IPv4 error: ";
+	err += uv_strerror(ip4_addr_res);
+	return false;
+}