I defined a QIODevice (especially a QTcpSocket) and would like to write a string as raw format. I describe my wishes with the following example:
char* string= "Hello World";
QByteArray bArray;
QDataStream stream(&bArray, QIODevice::WriteOnly);
stream.setVersion(QDataStream::Qt_4_6);
stream << string;
QFile file("Output.txt");
file.open(QIODevice::WriteOnly);
file.write(bArray);
file.close();
If I open the Output.txt in the Hex Editor I get the following result:
00 00 00 0C 48 65 6C 6C 6F 20 57 6F 72 6C 64 00
00 00 00 0C = 4bytes (length of the following massage)
48 65 6C 6C 6F 20 57 6F 72 6C 64 = 11bytes (the string "Hello World")
00 = an one empty byte
But thats not what I want. Is it possible to cut the lenth from 4bytes to just 2bytes? Or is it possible to grab just the string and define my own length of 2bytes instead?
The reason why I am asking is that I would like to send a message to a server. But the server accepts just packets in the following format:
00 0C 48 65 6C 6C 6F 20 57 6F 72 6C 64
00 0C = 2bytes
48 65 6C 6C 6F 20 57 6F 72 6C 64 = 11bytes
Any help would be great =)
If you need a special serialization format that do not match QDataStream's serialization, then you should code it yourself, instead of relying on QDataStream and modifying the result. it could be something like that: