Remove erroneous socket close() calls and clarify documentation.

src/include/qhttpengine/qobjecthandler.h

@@ -39,8 +39,9 @@ class QHTTPENGINE_EXPORT QObjectHandlerPrivate;
  *
  * This handler enables incoming requests to be processed by slots in a
  * QObject-derived class or functor. Methods are registered by providing a
- * name and slot to invoke. The slot may take a pointer to the
- * [Socket](@ref QHttpEngine::Socket) for the request as an argument.
+ * name and slot to invoke. The slot must take a pointer to the
+ * [Socket](@ref QHttpEngine::Socket) for the request as an argument and
+ * must also close the socket when finished with it.
  *
  * To use this class, simply create an instance and call the appropriate
  * registerMethod() overload. For example:
@@ -68,6 +69,7 @@ class QHTTPENGINE_EXPORT QObjectHandlerPrivate;
  * QHttpEngine::QObjectHandler handler;
  * handler.registerMethod("something", [](QHttpEngine::Socket *socket) {
  *     // do something
+ *     socket->close();
  * });
  * @endcode
  */

src/src/handler.cpp

@@ -92,5 +92,4 @@ void Handler::process(Socket *socket, const QString &)
 {
     // The default response is simply a 404 error
     socket->writeError(Socket::NotFound);
-    socket->close();
 }

src/src/qobjecthandler.cpp

@@ -92,11 +92,9 @@ void QObjectHandler::process(Socket *socket, const QString &path)
     // already the case, otherwise, wait until the rest of it arrives
     if (!m.readAll || socket->bytesAvailable() >= socket->contentLength()) {
         d->invokeSlot(socket, m);
-        socket->close();
     } else {
         connect(socket, &Socket::readChannelFinished, [this, socket, m]() {
             d->invokeSlot(socket, m);
-            socket->close();
         });
     }
 }