Host->Connect(*addr) seems wait a very long time

Development Programming & Scripting C++
1

I am writing a tcp client to connect to a tcp server.Part of codes are as following:
FIPv4Address::Parse(IPStr, ip); //将传入的IPStr转为IPv4地址 //创建一个addr存放ip地址和端口 TSharedPtr<FInternetAddr> addr = ISocketSubsystem::Get(PLATFORM_SOCKETSUBSYSTEM)->CreateInternetAddr(); addr->SetIp(ip.Value); addr->SetPort(port); //创建客户端socket Host = ISocketSubsystem::Get(PLATFORM_SOCKETSUBSYSTEM)->CreateSocket(NAME_Stream, TEXT(“default”), false); //连接成功 if (Host->Connect(*addr)) { UE_LOG(LogTemp, Warning, TEXT(“Connect Succeed!”)); return true; } //连接失败 else { UE_LOG(LogTemp, Warning, TEXT(“Connect Failed!”)); return false; } The problem is that when the connection failed(if the server did not run),Host->Connect(*addr) seems wait a very long time.
It takes about 20s for the program to go to the ‘else’ part when the connection failed.

2

The socket is likely blocking your execution until it times out, you could put that connection logic in another thread so it’s not blocking your main thread.

3

Thanks a lot!