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Error on socket send


I have a code that used to work until today. I use a FSocket created via FTcpSocketBuilder(...). The error is in my socket->send(...). As I said, it worked fine, but now it always fails to send data. Any insights to solve this?

 FString result;
 //Creating socket connection;
 FIPv4Endpoint endpoint(FIPv4Address(address[0], address[1], address[2], address[3]), outport);
 FSocket* socket = FTcpSocketBuilder(*socketName);
 if (!socket->Connect(endpoint.ToInternetAddr().Get()))
     GEngine->AddOnScreenDebugMessage(-1, 5.f, FColor::Green, FString(TEXT("Error connecting to webserver")));
     return FString(TEXT("Error connecting to webserver"));

 //Send the request for the webserver
 FBufferArchive buffer;
 buffer << request;
 int32 sent = 0;
 if (!socket->Send(buffer.GetData(), buffer.GetTypeSize(), sent))
     GEngine->AddOnScreenDebugMessage(-1, 5.f, FColor::Green, FString::Printf(TEXT("Error sending %d bytes of data to webserver: %d.%d.%d.%d:%d"), sent, *(address + 0), *(address + 1), *(address + 2), *(address + 3), outport));
     return FString(TEXT("Error sending message webserver"));
Product Version: UE 4.9
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asked Sep 16 '15 at 10:39 PM in C++ Programming

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avatar image gmpreussner STAFF Sep 16 '15 at 10:49 PM

What is the error?

avatar image lgss Sep 16 '15 at 11:05 PM

It doens't send the data (the function returns false and -1 bytes sent)

avatar image gmpreussner STAFF Sep 16 '15 at 11:07 PM

Can you post the whole code for the FTcpSocketBuilder initialization?

avatar image lgss Sep 16 '15 at 11:18 PM

Edited the question with the part of the code

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Hmm... not sure. One thing that looks wrong is buffer.GetTypeSize(). Did you mean buffer.TotalSize() ?

As far as the failed sending, your best bet would be step into socket code and see what error codes are returned.

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answered Sep 17 '15 at 12:15 AM

avatar image lgss Sep 17 '15 at 12:40 AM

Yeah, I just reinitialized the pc after realizing some other "zombie" process was using the socket...sight...thank you anyway! Also, I went back to my old "Fstring to uint8*" function, because that one wasn`t working...Looks like the problem is somewhere else now! gonna fix it! thank you! ^^

avatar image gmpreussner STAFF Sep 17 '15 at 02:22 PM

Also consider the AsReusable() method on the FTcpSocketBuilder. It will allow you to reuse the same port in multiple processes.

 FSocket* socket = FTcpSocketBuilder(*socketName).AsReusable();
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