CODEWITHSUNDEEP
c++socketswxwidgets
csteifel
csteifel

Reputation: 2934

wxWidgets reading from socket

I am having problems converting what is being read from a socket in wxWidgets to a wxString. I am doing like so:

wxChar * readBuffer = new wxChar[256];
wxSocketClient * connection = new wxSocketClient();
connection->Connect(addr, true);
connection->Read(readBuffer, 256);
wxString wasRead(readBuffer);
std::cout << wasRead.mb_string() << std::endl;

It keeps hanging up on printing the string, is there a better way to do this?

Upvotes: 0

Views: 932

Answers (2)

ravenspoint
ravenspoint

Reputation: 20576

Your readBuffer might well not be null terminated. In fact, it might contain only a partial message.

The simplest 'fix' is to ensure that it is null terminated

You can use LastCount() to determine number of bytes actually read.

However, the real fix is to set up a simple protocol between your server and client, so that you can determine when the entire message has been received and only then print it out.

connection->Read(readBuffer, 255);       // leave room for null terminator
readBuffer[connection->LastCount()/2] = L'\0';      // ensure null terminated

I am assuming you are using a unicode build. Remove the /2 if you aren't

Upvotes: 1

Vlad
Vlad

Reputation: 18633

If by hanging up you mean crashes, you might be missing a \0 at the end of your transmitted string. From what I know, wxString(wxChar*) would take a null-terminated string.

Upvotes: 0

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