diff options
Diffstat (limited to 'examples/network/doc/src/blockingfortuneclient.qdoc')
| -rw-r--r-- | examples/network/doc/src/blockingfortuneclient.qdoc | 33 |
1 files changed, 8 insertions, 25 deletions
diff --git a/examples/network/doc/src/blockingfortuneclient.qdoc b/examples/network/doc/src/blockingfortuneclient.qdoc index fbbfd466a5..12062fbe33 100644 --- a/examples/network/doc/src/blockingfortuneclient.qdoc +++ b/examples/network/doc/src/blockingfortuneclient.qdoc @@ -125,39 +125,22 @@ other \c waitFor...() functions, is part of QTcpSocket's \e{blocking API}. - After this statement, we have a connected socket to work with. Now it's - time to see what the fortune server has sent us. - - \snippet blockingfortuneclient/fortunethread.cpp 9 - \snippet blockingfortuneclient/fortunethread.cpp 10 - - This step is to read the size of the packet. Although we are only reading - two bytes here, and the \c while loop may seem to overdo it, we present this - code to demonstrate a good pattern for waiting for data using - QTcpSocket::waitForReadyRead(). It goes like this: For as long as we still - need more data, we call waitForReadyRead(). If it returns false, - we abort the operation. After this statement, we know that we have received - enough data. + After this statement, we have a connected socket to work with. \snippet blockingfortuneclient/fortunethread.cpp 11 Now we can create a QDataStream object, passing the socket to QDataStream's constructor, and as in the other client examples we set - the stream protocol version to QDataStream::Qt_4_0, and read the size - of the packet. + the stream protocol version to QDataStream::Qt_4_0. \snippet blockingfortuneclient/fortunethread.cpp 12 - \snippet blockingfortuneclient/fortunethread.cpp 13 - - Again, we'll use a loop that waits for more data by calling - QTcpSocket::waitForReadyRead(). In this loop, we're waiting until - QTcpSocket::bytesAvailable() returns the full packet size. - - \snippet blockingfortuneclient/fortunethread.cpp 14 - Now that we have all the data that we need, we can use QDataStream to - read the fortune string from the packet. The resulting fortune is - delivered by emitting newFortune(). + We proceed by initiating a loop that waits for the fortune string data by + calling QTcpSocket::waitForReadyRead(). If it returns false, we abort the + operation. After this statement, we start a stream read transaction. We + exit the loop when QDataStream::commitTransaction() returns true, which + means successful fortune string loading. The resulting fortune is + delivered by emitting newFortune(): \snippet blockingfortuneclient/fortunethread.cpp 15 |