QTcpSocket/QTcpServer always reading empty

[slimac55]

I'm trying to run a basic HTTP server in Qt. I can write HTTP headers and HTML back to the browser, but I can't receive any headers from the browser. Any read operation returns nothing and functions like "bytesAvailable()" always return 0.

This is my .h file:

#ifndef HTTPSERVER2_H
#define HTTPSERVER2_H

#include <QTcpServer>
#include <QObject>

class HTTPServer2 : public QObject
{
    Q_OBJECT
public:
    explicit HTTPServer2(QObject *parent = 0);

signals:

public slots:

private:
    QTcpServer *server;

private slots:
    void readRequest();
};

#endif // HTTPSERVER2_H

And this is my .cpp file:

#include <QDebug>
#include <QTcpServer>
#include <QTcpSocket>
#include "httpserver2.h"

HTTPServer2::HTTPServer2(QObject *parent) : QObject(parent) {
    int port = 5000;

    server = new QTcpServer();

    if (server->listen(QHostAddress::Any, port)) {
        QString portStr = QString::number(port);
        qDebug() << "Server running on port " + portStr;

        connect(server, SIGNAL(newConnection()), this, SLOT(readRequest()));
    } else {
        qDebug() << "Failed to create server: " + server->serverError();
    }
}

void HTTPServer2::readRequest() {
    QTcpSocket* client = server->nextPendingConnection();

    QByteArray ba = client->readAll();
    QString str = ba.data();

    QString response = "Hello world";
    client->write("HTTP/1.1 200 OK\r\n");
    client->write("Server: Qt Web Server\r\n");
    client->write("Content-Type: text/html; charset=utf-8\r\n");
    QString responseLength = "Content-Length: " + QString::number(response.length()) + "\r\n";
    client->write(responseLength.toUtf8());
    client->write("Connection: close\r\n");
    client->write("\r\n");
    client->write(response.toUtf8());

    client->disconnect();
}

I've gotten an HTTP server to work in Java before, but I've been struggling to get this working for quite some time. Any help would be very much appreciated.

[p3c0]

Hi @slimac55 and Welcome,
You should connect to readyRead signal once you get the new connection and then read the data in the slot.

[slimac55]

Thanks, I got it with that. For reference, I also used waitForReadyRead() to help debugging it all.