Streaming files to web browser using QTcpSocket

Hi,

i have to post this solution, because i spent 2 days with founding it.

If you are developing a http service (server), you may be looking for a way, how to send non-text files to browser.

Example: I develop a WMS Server, which sends in some concrete cases an XML file and in the others image with a map. But the question is, how to stream the file to server?!

Solution: You have opened QTcpSocket and now you have to send an image (or any other file) to a server.

Code:

---

QTextStream resultStream(mySocket); // QTcpSocket* mySocket
resultStream.setAutoDetectUnicode(true); // if needed
 
// Header in each case
resultStream << "HTTP/1.0 200 Ok\r\n";
resultStream << "Content-Type: " + contentType + "\r\n"; // e.g. image/png
resultStream << "\r\n"; // end of header
 
if (contentType == "text/xml") { // should be extended - text/plain, text/html, ...
    resultStream << content;// in this case QDomDocument converted to QString
} else { // maps and other files
 
    QFile transferedFile("file.png");
    if (!transferedFile.open(QIODevice::ReadOnly)) {
        // handle error
    }
 
    resultStream.flush(); // flush buffer with header to the web browser
 
    // Streaming the file
    QByteArray block = transferedFile.readAll();
    mySocket->write(block);
    mySocket->close(); // finished :)
}

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Hope it helped at least one person :D

Thanks A LOT! I subscribed to this forum just to say Thank you, and it seems that I'll hang out here more often. Again thanks :)

thanks a lot this is a g8t help ;)but i want to know how do u stream an audio file from the web browser...please help....:confused:
thank u in advance

Thank you !! You have saved my day :D