void QHttpNetworkConnectionChannel::handleStatus()
{
Q_ASSERT(socket);
Q_ASSERT(reply);
int statusCode = reply->statusCode();
bool resend = false;
switch (statusCode) {
case 401: // auth required
case 407: // proxy auth required
if (connection->d_func()->handleAuthenticateChallenge(socket, reply, (statusCode == 407), resend)) {
if (resend) {
QNonContiguousByteDevice* uploadByteDevice = request.uploadByteDevice();
if (uploadByteDevice) {
if (uploadByteDevice->reset()) {
written = 0;
} else {
connection->d_func()->emitReplyError(socket, reply, QNetworkReply::ContentReSendError);
break;
}
}
reply->d_func()->eraseData();
if (alreadyPipelinedRequests.isEmpty()) {
// this does a re-send without closing the connection
resendCurrent = true;
QMetaObject::invokeMethod(connection, "_q_startNextRequest", Qt::QueuedConnection);
} else {
// we had requests pipelined.. better close the connection in closeAndResendCurrentRequest
closeAndResendCurrentRequest();
QMetaObject::invokeMethod(connection, "_q_startNextRequest", Qt::QueuedConnection);
}
}
} else {
emit reply->headerChanged();
emit reply->readyRead();
QNetworkReply::NetworkError errorCode = (statusCode == 407)
? QNetworkReply::ProxyAuthenticationRequiredError
: QNetworkReply::AuthenticationRequiredError;
reply->d_func()->errorString = connection->d_func()->errorDetail(errorCode, socket);
emit connection->error(errorCode, reply->d_func()->errorString);
emit reply->finished();
}
break;
default:
QMetaObject::invokeMethod(connection, "_q_startNextRequest", Qt::QueuedConnection);
}
}
// called when unexpectedly reading a -1 or when data is expected but socket is closed
void QHttpNetworkConnectionChannel::handleUnexpectedEOF()
{
if (reconnectAttempts <= 0) {
// too many errors reading/receiving/parsing the status, close the socket and emit error
requeueCurrentlyPipelinedRequests();
close();
reply->d_func()->errorString = connection->d_func()->errorDetail(QNetworkReply::RemoteHostClosedError, socket);
emit reply->finishedWithError(QNetworkReply::RemoteHostClosedError, reply->d_func()->errorString);
QMetaObject::invokeMethod(connection, "_q_startNextRequest", Qt::QueuedConnection);
} else {
reconnectAttempts--;
reply->d_func()->clear();
reply->d_func()->connection = connection;
reply->d_func()->connectionChannel = this;
closeAndResendCurrentRequest();
}
}
void QHttpNetworkConnectionChannel::_q_error(QAbstractSocket::SocketError socketError)
{
if (!socket)
return;
QNetworkReply::NetworkError errorCode = QNetworkReply::UnknownNetworkError;
switch (socketError) {
case QAbstractSocket::HostNotFoundError:
errorCode = QNetworkReply::HostNotFoundError;
break;
case QAbstractSocket::ConnectionRefusedError:
errorCode = QNetworkReply::ConnectionRefusedError;
break;
case QAbstractSocket::RemoteHostClosedError:
// try to reconnect/resend before sending an error.
// while "Reading" the _q_disconnected() will handle this.
if (state != QHttpNetworkConnectionChannel::IdleState && state != QHttpNetworkConnectionChannel::ReadingState) {
if (reconnectAttempts-- > 0) {
closeAndResendCurrentRequest();
return;
} else {
errorCode = QNetworkReply::RemoteHostClosedError;
}
} else if (state == QHttpNetworkConnectionChannel::ReadingState) {
if (!reply->d_func()->expectContent()) {
// No content expected, this is a valid way to have the connection closed by the server
return;
}
if (reply->contentLength() == -1 && !reply->d_func()->isChunked()) {
// There was no content-length header and it's not chunked encoding,
// so this is a valid way to have the connection closed by the server
return;
}
// ok, we got a disconnect even though we did not expect it
errorCode = QNetworkReply::RemoteHostClosedError;
} else {
errorCode = QNetworkReply::RemoteHostClosedError;
}
break;
case QAbstractSocket::SocketTimeoutError:
// try to reconnect/resend before sending an error.
if (state == QHttpNetworkConnectionChannel::WritingState && (reconnectAttempts-- > 0)) {
closeAndResendCurrentRequest();
return;
}
errorCode = QNetworkReply::TimeoutError;
break;
case QAbstractSocket::ProxyAuthenticationRequiredError:
errorCode = QNetworkReply::ProxyAuthenticationRequiredError;
break;
case QAbstractSocket::SslHandshakeFailedError:
errorCode = QNetworkReply::SslHandshakeFailedError;
break;
default:
// all other errors are treated as NetworkError
errorCode = QNetworkReply::UnknownNetworkError;
break;
}
QPointer<QHttpNetworkConnection> that = connection;
QString errorString = connection->d_func()->errorDetail(errorCode, socket, socket->errorString());
// In the InProgress state the channel should not emit the error.
// This will instead be handled by the connection.
if (!connection->d_func()->shouldEmitChannelError(socket))
return;
// Need to dequeu the request so that we can emit the error.
if (!reply)
connection->d_func()->dequeueRequest(socket);
if (reply) {
reply->d_func()->errorString = errorString;
emit reply->finishedWithError(errorCode, errorString);
reply = 0;
}
// send the next request
QMetaObject::invokeMethod(that, "_q_startNextRequest", Qt::QueuedConnection);
if (that) //signal emission triggered event loop
close();
}
void QHttpNetworkConnectionChannel::_q_error(QAbstractSocket::SocketError socketError)
{
if (!socket)
return;
QNetworkReply::NetworkError errorCode = QNetworkReply::UnknownNetworkError;
switch (socketError) {
case QAbstractSocket::HostNotFoundError:
errorCode = QNetworkReply::HostNotFoundError;
break;
case QAbstractSocket::ConnectionRefusedError:
errorCode = QNetworkReply::ConnectionRefusedError;
break;
case QAbstractSocket::RemoteHostClosedError:
// try to reconnect/resend before sending an error.
// while "Reading" the _q_disconnected() will handle this.
if (state != QHttpNetworkConnectionChannel::IdleState && state != QHttpNetworkConnectionChannel::ReadingState) {
if (reconnectAttempts-- > 0) {
closeAndResendCurrentRequest();
return;
} else {
errorCode = QNetworkReply::RemoteHostClosedError;
}
} else if (state == QHttpNetworkConnectionChannel::ReadingState) {
if (!reply->d_func()->expectContent()) {
// No content expected, this is a valid way to have the connection closed by the server
return;
}
if (reply->contentLength() == -1 && !reply->d_func()->isChunked()) {
// There was no content-length header and it's not chunked encoding,
// so this is a valid way to have the connection closed by the server
return;
}
// ok, we got a disconnect even though we did not expect it
// Try to read everything from the socket before we emit the error.
if (socket->bytesAvailable()) {
// Read everything from the socket into the reply buffer.
// we can ignore the readbuffersize as the data is already
// in memory and we will not receive more data on the socket.
reply->setReadBufferSize(0);
_q_receiveReply();
#ifndef QT_NO_SSL
if (ssl) {
// QT_NO_OPENSSL. The QSslSocket can still have encrypted bytes in the plainsocket.
// So we need to check this if the socket is a QSslSocket. When the socket is flushed
// it will force a decrypt of the encrypted data in the plainsocket.
QSslSocket *sslSocket = static_cast<QSslSocket*>(socket);
qint64 beforeFlush = sslSocket->encryptedBytesAvailable();
while (sslSocket->encryptedBytesAvailable()) {
sslSocket->flush();
_q_receiveReply();
qint64 afterFlush = sslSocket->encryptedBytesAvailable();
if (afterFlush == beforeFlush)
break;
beforeFlush = afterFlush;
}
}
#endif
}
errorCode = QNetworkReply::RemoteHostClosedError;
} else {
errorCode = QNetworkReply::RemoteHostClosedError;
}
break;
case QAbstractSocket::SocketTimeoutError:
// try to reconnect/resend before sending an error.
if (state == QHttpNetworkConnectionChannel::WritingState && (reconnectAttempts-- > 0)) {
closeAndResendCurrentRequest();
return;
}
errorCode = QNetworkReply::TimeoutError;
break;
case QAbstractSocket::ProxyAuthenticationRequiredError:
errorCode = QNetworkReply::ProxyAuthenticationRequiredError;
break;
case QAbstractSocket::SslHandshakeFailedError:
errorCode = QNetworkReply::SslHandshakeFailedError;
break;
default:
// all other errors are treated as NetworkError
errorCode = QNetworkReply::UnknownNetworkError;
break;
}
QPointer<QHttpNetworkConnection> that = connection;
QString errorString = connection->d_func()->errorDetail(errorCode, socket, socket->errorString());
// In the InProgress state the channel should not emit the error.
// This will instead be handled by the connection.
if (!connection->d_func()->shouldEmitChannelError(socket))
return;
// Need to dequeu the request so that we can emit the error.
if (!reply)
connection->d_func()->dequeueRequest(socket);
if (reply) {
reply->d_func()->errorString = errorString;
emit reply->finishedWithError(errorCode, errorString);
reply = 0;
}
// send the next request
QMetaObject::invokeMethod(that, "_q_startNextRequest", Qt::QueuedConnection);
if (that) //signal emission triggered event loop
close();
}
void QHttpNetworkConnectionChannel::_q_error(QAbstractSocket::SocketError socketError)
{
if (!socket)
return;
bool send2Reply = false;
QNetworkReply::NetworkError errorCode = QNetworkReply::UnknownNetworkError;
switch (socketError) {
case QAbstractSocket::HostNotFoundError:
errorCode = QNetworkReply::HostNotFoundError;
break;
case QAbstractSocket::ConnectionRefusedError:
errorCode = QNetworkReply::ConnectionRefusedError;
break;
case QAbstractSocket::RemoteHostClosedError:
// try to reconnect/resend before sending an error.
// while "Reading" the _q_disconnected() will handle this.
if (state != QHttpNetworkConnectionChannel::IdleState && state != QHttpNetworkConnectionChannel::ReadingState) {
if (reconnectAttempts-- > 0) {
closeAndResendCurrentRequest();
return;
} else {
send2Reply = true;
errorCode = QNetworkReply::RemoteHostClosedError;
}
} else {
return;
}
break;
case QAbstractSocket::SocketTimeoutError:
// try to reconnect/resend before sending an error.
if (state == QHttpNetworkConnectionChannel::WritingState && (reconnectAttempts-- > 0)) {
closeAndResendCurrentRequest();
return;
}
send2Reply = true;
errorCode = QNetworkReply::TimeoutError;
break;
case QAbstractSocket::ProxyAuthenticationRequiredError:
errorCode = QNetworkReply::ProxyAuthenticationRequiredError;
break;
case QAbstractSocket::SslHandshakeFailedError:
errorCode = QNetworkReply::SslHandshakeFailedError;
break;
default:
// all other errors are treated as NetworkError
errorCode = QNetworkReply::UnknownNetworkError;
break;
}
QPointer<QHttpNetworkConnection> that = connection;
QString errorString = connection->d_func()->errorDetail(errorCode, socket, socket->errorString());
if (send2Reply) {
if (reply) {
reply->d_func()->errorString = errorString;
// this error matters only to this reply
emit reply->finishedWithError(errorCode, errorString);
}
// send the next request
QMetaObject::invokeMethod(that, "_q_startNextRequest", Qt::QueuedConnection);
} else {
// the failure affects all requests.
emit connection->error(errorCode, errorString);
}
if (that) //signal emission triggered event loop
close();
}
void QHttpNetworkConnectionChannel::_q_receiveReply()
{
Q_ASSERT(socket);
qint64 bytes = 0;
QAbstractSocket::SocketState socketState = socket->state();
// connection might be closed to signal the end of data
if (socketState == QAbstractSocket::UnconnectedState) {
if (!socket->bytesAvailable()) {
if (reply && reply->d_func()->state == QHttpNetworkReplyPrivate::ReadingDataState) {
reply->d_func()->state = QHttpNetworkReplyPrivate::AllDoneState;
this->state = QHttpNetworkConnectionChannel::IdleState;
allDone();
} else {
// try to reconnect/resend before sending an error.
if (reconnectAttempts-- > 0) {
closeAndResendCurrentRequest();
} else if (reply) {
reply->d_func()->errorString = connection->d_func()->errorDetail(QNetworkReply::RemoteHostClosedError, socket);
emit reply->finishedWithError(QNetworkReply::RemoteHostClosedError, reply->d_func()->errorString);
QMetaObject::invokeMethod(connection, "_q_startNextRequest", Qt::QueuedConnection);
}
}
}
}
// read loop for the response
while (socket->bytesAvailable()) {
QHttpNetworkReplyPrivate::ReplyState state = reply ? reply->d_func()->state : QHttpNetworkReplyPrivate::AllDoneState;
switch (state) {
case QHttpNetworkReplyPrivate::NothingDoneState:
case QHttpNetworkReplyPrivate::ReadingStatusState: {
eatWhitespace();
qint64 statusBytes = reply->d_func()->readStatus(socket);
if (statusBytes == -1 && reconnectAttempts <= 0) {
// too many errors reading/receiving/parsing the status, close the socket and emit error
close();
reply->d_func()->errorString = connection->d_func()->errorDetail(QNetworkReply::ProtocolFailure, socket);
emit reply->finishedWithError(QNetworkReply::ProtocolFailure, reply->d_func()->errorString);
QMetaObject::invokeMethod(connection, "_q_startNextRequest", Qt::QueuedConnection);
break;
} else if (statusBytes == -1) {
reconnectAttempts--;
reply->d_func()->clear();
closeAndResendCurrentRequest();
break;
}
bytes += statusBytes;
lastStatus = reply->d_func()->statusCode;
break;
}
case QHttpNetworkReplyPrivate::ReadingHeaderState: {
QHttpNetworkReplyPrivate *replyPrivate = reply->d_func();
bytes += replyPrivate->readHeader(socket);
if (replyPrivate->state == QHttpNetworkReplyPrivate::ReadingDataState) {
if (replyPrivate->isGzipped() && replyPrivate->autoDecompress) {
// remove the Content-Length from header
replyPrivate->removeAutoDecompressHeader();
} else {
replyPrivate->autoDecompress = false;
}
if (replyPrivate->statusCode == 100) {
replyPrivate->state = QHttpNetworkReplyPrivate::ReadingStatusState;
break; // ignore
}
if (replyPrivate->shouldEmitSignals())
emit reply->headerChanged();
if (!replyPrivate->expectContent()) {
replyPrivate->state = QHttpNetworkReplyPrivate::AllDoneState;
this->state = QHttpNetworkConnectionChannel::IdleState;
allDone();
return;
}
}
break;
}
case QHttpNetworkReplyPrivate::ReadingDataState: {
QHttpNetworkReplyPrivate *replyPrivate = reply->d_func();
if (replyPrivate->downstreamLimited && !replyPrivate->responseData.isEmpty() && replyPrivate->shouldEmitSignals()) {
// We already have some HTTP body data. We don't read more from the socket until
// this is fetched by QHttpNetworkAccessHttpBackend. If we would read more,
// we could not limit our read buffer usage.
// We only do this when shouldEmitSignals==true because our HTTP parsing
// always needs to parse the 401/407 replies. Therefore they don't really obey
// to the read buffer maximum size, but we don't care since they should be small.
return;
}
if (!replyPrivate->isChunked() && !replyPrivate->autoDecompress
&& replyPrivate->bodyLength > 0) {
// bulk files like images should fulfill these properties and
// we can therefore save on memory copying
bytes = replyPrivate->readBodyFast(socket, &replyPrivate->responseData);
replyPrivate->totalProgress += bytes;
if (replyPrivate->shouldEmitSignals()) {
QPointer<QHttpNetworkReply> replyPointer = reply;
emit reply->readyRead();
// make sure that the reply is valid
if (replyPointer.isNull())
return;
emit reply->dataReadProgress(replyPrivate->totalProgress, replyPrivate->bodyLength);
// make sure that the reply is valid
if (replyPointer.isNull())
return;
}
}
else
{
// use the traditional slower reading (for compressed encoding, chunked encoding,
// no content-length etc)
QByteDataBuffer byteDatas;
bytes = replyPrivate->readBody(socket, &byteDatas);
if (bytes) {
if (replyPrivate->autoDecompress)
replyPrivate->appendCompressedReplyData(byteDatas);
else
replyPrivate->appendUncompressedReplyData(byteDatas);
if (!replyPrivate->autoDecompress) {
replyPrivate->totalProgress += bytes;
if (replyPrivate->shouldEmitSignals()) {
QPointer<QHttpNetworkReply> replyPointer = reply;
// important: At the point of this readyRead(), the byteDatas list must be empty,
// else implicit sharing will trigger memcpy when the user is reading data!
emit reply->readyRead();
// make sure that the reply is valid
if (replyPointer.isNull())
return;
emit reply->dataReadProgress(replyPrivate->totalProgress, replyPrivate->bodyLength);
// make sure that the reply is valid
if (replyPointer.isNull())
return;
}
}
#ifndef QT_NO_COMPRESS
else if (!expand(false)) { // expand a chunk if possible
return; // ### expand failed
}
#endif
}
}
if (replyPrivate->state == QHttpNetworkReplyPrivate::ReadingDataState)
break;
// everything done, fall through
}
case QHttpNetworkReplyPrivate::AllDoneState:
this->state = QHttpNetworkConnectionChannel::IdleState;
allDone();
break;
default:
break;
}
}
}
