Polish SCTP examples

- Introduce a common header file for client and server;
- Update license headers;
- Fix minor issues.

Change-Id: I3fc42fd5ba32141c702fc6679a27bf0b6a16fd26
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>

22 files changed, 329 insertions, 75 deletions

diff --git a/examples/network/multistreamclient/chatconsumer.cpp b/examples/network/multistreamclient/chatconsumer.cpp
index 65840accae..723ecfaa23 100644
--- a/examples/network/multistreamclient/chatconsumer.cpp
+++ b/examples/network/multistreamclient/chatconsumer.cpp
@@ -1,12 +1,22 @@
 /****************************************************************************
 **
 ** Copyright (C) 2016 Alex Trotsenko <alex1973tr@gmail.com>
-** Contact: http://www.qt.io/licensing/
+** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
-** You may use this file under the terms of the BSD license as follows:
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
diff --git a/examples/network/multistreamclient/chatconsumer.h b/examples/network/multistreamclient/chatconsumer.h
index cac846757f..9e12f99359 100644
--- a/examples/network/multistreamclient/chatconsumer.h
+++ b/examples/network/multistreamclient/chatconsumer.h
@@ -1,12 +1,22 @@
 /****************************************************************************
 **
 ** Copyright (C) 2016 Alex Trotsenko <alex1973tr@gmail.com>
-** Contact: http://www.qt.io/licensing/
+** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
-** You may use this file under the terms of the BSD license as follows:
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
diff --git a/examples/network/multistreamclient/client.cpp b/examples/network/multistreamclient/client.cpp
index fbe138162e..112fb2e1a0 100644
--- a/examples/network/multistreamclient/client.cpp
+++ b/examples/network/multistreamclient/client.cpp
@@ -1,12 +1,22 @@
 /****************************************************************************
 **
 ** Copyright (C) 2016 Alex Trotsenko <alex1973tr@gmail.com>
-** Contact: http://www.qt.io/licensing/
+** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
-** You may use this file under the terms of the BSD license as follows:
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
@@ -46,9 +56,11 @@
 #include "timeconsumer.h"
 #include "chatconsumer.h"
 
+#include "../shared/sctpchannels.h"
+
 Client::Client(QWidget *parent)
     : QDialog(parent)
-    , consumers(NumberOfChannels)
+    , consumers(SctpChannels::NumberOfChannels)
 {
     setWindowTitle(tr("Multi-stream Client"));
 
@@ -100,12 +112,12 @@ Client::Client(QWidget *parent)
     buttonBox->addButton(quitButton, QDialogButtonBox::AcceptRole);
 
     QLabel *movieLabel = new QLabel(tr("Movie stream:"));
-    consumers[Movie] = new MovieConsumer(this);
+    consumers[SctpChannels::Movie] = new MovieConsumer(this);
     QLabel *timeLabel = new QLabel(tr("Time stream:"));
-    consumers[Time] = new TimeConsumer(this);
+    consumers[SctpChannels::Time] = new TimeConsumer(this);
     QLabel *chatLabel = new QLabel(tr("&Chat:"));
-    consumers[Chat] = new ChatConsumer(this);
-    chatLabel->setBuddy(consumers[Chat]->widget());
+    consumers[SctpChannels::Chat] = new ChatConsumer(this);
+    chatLabel->setBuddy(consumers[SctpChannels::Chat]->widget());
 
     connect(hostCombo, &QComboBox::editTextChanged, this, &Client::enableConnectButton);
     connect(portLineEdit, &QLineEdit::textChanged, this, &Client::enableConnectButton);
@@ -116,8 +128,8 @@ Client::Client(QWidget *parent)
     connect(sctpSocket, &QSctpSocket::channelReadyRead, this, &Client::readDatagram);
     connect(sctpSocket, SIGNAL(error(QAbstractSocket::SocketError)),
             this, SLOT(displayError(QAbstractSocket::SocketError)));
-    connect(consumers[Time], &Consumer::writeDatagram, this, &Client::writeDatagram);
-    connect(consumers[Chat], &Consumer::writeDatagram, this, &Client::writeDatagram);
+    connect(consumers[SctpChannels::Time], &Consumer::writeDatagram, this, &Client::writeDatagram);
+    connect(consumers[SctpChannels::Chat], &Consumer::writeDatagram, this, &Client::writeDatagram);
 
     QGridLayout *mainLayout = new QGridLayout;
     mainLayout->addWidget(hostLabel, 0, 0);
@@ -127,10 +139,10 @@ Client::Client(QWidget *parent)
     mainLayout->addWidget(buttonBox, 2, 0, 1, 2);
     mainLayout->addWidget(movieLabel, 3, 0);
     mainLayout->addWidget(timeLabel, 3, 1);
-    mainLayout->addWidget(consumers[Movie]->widget(), 4, 0);
-    mainLayout->addWidget(consumers[Time]->widget(), 4, 1);
+    mainLayout->addWidget(consumers[SctpChannels::Movie]->widget(), 4, 0);
+    mainLayout->addWidget(consumers[SctpChannels::Time]->widget(), 4, 1);
     mainLayout->addWidget(chatLabel, 5, 0);
-    mainLayout->addWidget(consumers[Chat]->widget(), 6, 0, 1, 2);
+    mainLayout->addWidget(consumers[SctpChannels::Chat]->widget(), 6, 0, 1, 2);
     setLayout(mainLayout);
 
     portLineEdit->setFocus();
@@ -143,7 +155,7 @@ Client::~Client()
 
 void Client::connected()
 {
-    consumers[Chat]->widget()->setFocus();
+    consumers[SctpChannels::Chat]->widget()->setFocus();
 }
 
 void Client::disconnected()
@@ -189,7 +201,7 @@ void Client::displayError(QAbstractSocket::SocketError socketError)
                                  .arg(sctpSocket->errorString()));
     }
 
-    connectButton->setEnabled(true);
+    enableConnectButton();
 }
 
 void Client::enableConnectButton()
diff --git a/examples/network/multistreamclient/client.h b/examples/network/multistreamclient/client.h
index 6ec804e9be..c22a245eba 100644
--- a/examples/network/multistreamclient/client.h
+++ b/examples/network/multistreamclient/client.h
@@ -1,12 +1,22 @@
 /****************************************************************************
 **
 ** Copyright (C) 2016 Alex Trotsenko <alex1973tr@gmail.com>
-** Contact: http://www.qt.io/licensing/
+** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
-** You may use this file under the terms of the BSD license as follows:
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
@@ -71,14 +81,6 @@ private slots:
     void writeDatagram(const QByteArray &ba);
 
 private:
-    enum ChannelNumber {
-        Movie = 0,
-        Time = 1,
-        Chat = 2,
-
-        NumberOfChannels = 3
-    };
-
     QVector<Consumer *> consumers;
     QSctpSocket *sctpSocket;
 
diff --git a/examples/network/multistreamclient/consumer.h b/examples/network/multistreamclient/consumer.h
index 0c7c1bbfb6..d70f8d67bf 100644
--- a/examples/network/multistreamclient/consumer.h
+++ b/examples/network/multistreamclient/consumer.h
@@ -1,12 +1,22 @@
 /****************************************************************************
 **
 ** Copyright (C) 2016 Alex Trotsenko <alex1973tr@gmail.com>
-** Contact: http://www.qt.io/licensing/
+** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
-** You may use this file under the terms of the BSD license as follows:
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
diff --git a/examples/network/multistreamclient/main.cpp b/examples/network/multistreamclient/main.cpp
index c9e0c38d9a..b903214710 100644
--- a/examples/network/multistreamclient/main.cpp
+++ b/examples/network/multistreamclient/main.cpp
@@ -1,12 +1,22 @@
 /****************************************************************************
 **
 ** Copyright (C) 2016 Alex Trotsenko <alex1973tr@gmail.com>
-** Contact: http://www.qt.io/licensing/
+** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
-** You may use this file under the terms of the BSD license as follows:
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
diff --git a/examples/network/multistreamclient/movieconsumer.cpp b/examples/network/multistreamclient/movieconsumer.cpp
index 68c7b4a229..ff5610a0b9 100644
--- a/examples/network/multistreamclient/movieconsumer.cpp
+++ b/examples/network/multistreamclient/movieconsumer.cpp
@@ -1,12 +1,22 @@
 /****************************************************************************
 **
 ** Copyright (C) 2016 Alex Trotsenko <alex1973tr@gmail.com>
-** Contact: http://www.qt.io/licensing/
+** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
-** You may use this file under the terms of the BSD license as follows:
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
diff --git a/examples/network/multistreamclient/movieconsumer.h b/examples/network/multistreamclient/movieconsumer.h
index 0f4fd7af42..74321a8505 100644
--- a/examples/network/multistreamclient/movieconsumer.h
+++ b/examples/network/multistreamclient/movieconsumer.h
@@ -1,12 +1,22 @@
 /****************************************************************************
 **
 ** Copyright (C) 2016 Alex Trotsenko <alex1973tr@gmail.com>
-** Contact: http://www.qt.io/licensing/
+** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
-** You may use this file under the terms of the BSD license as follows:
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
diff --git a/examples/network/multistreamclient/timeconsumer.cpp b/examples/network/multistreamclient/timeconsumer.cpp
index 3ad73a8712..6543e53cfc 100644
--- a/examples/network/multistreamclient/timeconsumer.cpp
+++ b/examples/network/multistreamclient/timeconsumer.cpp
@@ -1,12 +1,22 @@
 /****************************************************************************
 **
 ** Copyright (C) 2016 Alex Trotsenko <alex1973tr@gmail.com>
-** Contact: http://www.qt.io/licensing/
+** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
-** You may use this file under the terms of the BSD license as follows:
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
diff --git a/examples/network/multistreamclient/timeconsumer.h b/examples/network/multistreamclient/timeconsumer.h
index d382e99d86..3faa4a6b1a 100644
--- a/examples/network/multistreamclient/timeconsumer.h
+++ b/examples/network/multistreamclient/timeconsumer.h
@@ -1,12 +1,22 @@
 /****************************************************************************
 **
 ** Copyright (C) 2016 Alex Trotsenko <alex1973tr@gmail.com>
-** Contact: http://www.qt.io/licensing/
+** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
-** You may use this file under the terms of the BSD license as follows:
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
diff --git a/examples/network/multistreamserver/chatprovider.cpp b/examples/network/multistreamserver/chatprovider.cpp
index 9a88d491ab..a6ba9c6a27 100644
--- a/examples/network/multistreamserver/chatprovider.cpp
+++ b/examples/network/multistreamserver/chatprovider.cpp
@@ -1,12 +1,22 @@
 /****************************************************************************
 **
 ** Copyright (C) 2016 Alex Trotsenko <alex1973tr@gmail.com>
-** Contact: http://www.qt.io/licensing/
+** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
-** You may use this file under the terms of the BSD license as follows:
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
diff --git a/examples/network/multistreamserver/chatprovider.h b/examples/network/multistreamserver/chatprovider.h
index 912101ec34..b6ff61a917 100644
--- a/examples/network/multistreamserver/chatprovider.h
+++ b/examples/network/multistreamserver/chatprovider.h
@@ -1,12 +1,22 @@
 /****************************************************************************
 **
 ** Copyright (C) 2016 Alex Trotsenko <alex1973tr@gmail.com>
-** Contact: http://www.qt.io/licensing/
+** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
-** You may use this file under the terms of the BSD license as follows:
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
diff --git a/examples/network/multistreamserver/main.cpp b/examples/network/multistreamserver/main.cpp
index 04350cd13d..ae201f6b82 100644
--- a/examples/network/multistreamserver/main.cpp
+++ b/examples/network/multistreamserver/main.cpp
@@ -1,12 +1,22 @@
 /****************************************************************************
 **
 ** Copyright (C) 2016 Alex Trotsenko <alex1973tr@gmail.com>
-** Contact: http://www.qt.io/licensing/
+** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
-** You may use this file under the terms of the BSD license as follows:
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
diff --git a/examples/network/multistreamserver/movieprovider.cpp b/examples/network/multistreamserver/movieprovider.cpp
index cc534e6f40..335038a515 100644
--- a/examples/network/multistreamserver/movieprovider.cpp
+++ b/examples/network/multistreamserver/movieprovider.cpp
@@ -1,12 +1,22 @@
 /****************************************************************************
 **
 ** Copyright (C) 2016 Alex Trotsenko <alex1973tr@gmail.com>
-** Contact: http://www.qt.io/licensing/
+** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
-** You may use this file under the terms of the BSD license as follows:
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
diff --git a/examples/network/multistreamserver/movieprovider.h b/examples/network/multistreamserver/movieprovider.h
index d6d8fb7449..46de20a648 100644
--- a/examples/network/multistreamserver/movieprovider.h
+++ b/examples/network/multistreamserver/movieprovider.h
@@ -1,12 +1,22 @@
 /****************************************************************************
 **
 ** Copyright (C) 2016 Alex Trotsenko <alex1973tr@gmail.com>
-** Contact: http://www.qt.io/licensing/
+** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
-** You may use this file under the terms of the BSD license as follows:
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
diff --git a/examples/network/multistreamserver/provider.h b/examples/network/multistreamserver/provider.h
index c6ec612275..5be14d5ed8 100644
--- a/examples/network/multistreamserver/provider.h
+++ b/examples/network/multistreamserver/provider.h
@@ -1,12 +1,22 @@
 /****************************************************************************
 **
 ** Copyright (C) 2016 Alex Trotsenko <alex1973tr@gmail.com>
-** Contact: http://www.qt.io/licensing/
+** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
-** You may use this file under the terms of the BSD license as follows:
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
diff --git a/examples/network/multistreamserver/server.cpp b/examples/network/multistreamserver/server.cpp
index 1fb18e80b9..3b06c0fd37 100644
--- a/examples/network/multistreamserver/server.cpp
+++ b/examples/network/multistreamserver/server.cpp
@@ -1,12 +1,22 @@
 /****************************************************************************
 **
 ** Copyright (C) 2015 Alex Trotsenko <alex1973tr@gmail.com>
-** Contact: http://www.qt.io/licensing/
+** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
-** You may use this file under the terms of the BSD license as follows:
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
@@ -47,9 +57,11 @@
 #include "timeprovider.h"
 #include "chatprovider.h"
 
+#include "../shared/sctpchannels.h"
+
 Server::Server(QWidget *parent)
     : QDialog(parent)
-    , providers(NumberOfChannels)
+    , providers(SctpChannels::NumberOfChannels)
 {
     setWindowTitle(tr("Multi-stream Server"));
 
@@ -59,15 +71,15 @@ Server::Server(QWidget *parent)
     statusLabel = new QLabel;
     QPushButton *quitButton = new QPushButton(tr("Quit"));
 
-    providers[Movie] = new MovieProvider(this);
-    providers[Time] = new TimeProvider(this);
-    providers[Chat] = new ChatProvider(this);
+    providers[SctpChannels::Movie] = new MovieProvider(this);
+    providers[SctpChannels::Time] = new TimeProvider(this);
+    providers[SctpChannels::Chat] = new ChatProvider(this);
 
     connect(sctpServer, &QSctpServer::newConnection, this, &Server::newConnection);
     connect(quitButton, &QPushButton::clicked, this, &Server::accept);
-    connect(providers[Movie], &Provider::writeDatagram, this, &Server::writeDatagram);
-    connect(providers[Time], &Provider::writeDatagram, this, &Server::writeDatagram);
-    connect(providers[Chat], &Provider::writeDatagram, this, &Server::writeDatagram);
+    connect(providers[SctpChannels::Movie], &Provider::writeDatagram, this, &Server::writeDatagram);
+    connect(providers[SctpChannels::Time], &Provider::writeDatagram, this, &Server::writeDatagram);
+    connect(providers[SctpChannels::Chat], &Provider::writeDatagram, this, &Server::writeDatagram);
 
     QVBoxLayout *mainLayout = new QVBoxLayout;
     mainLayout->addWidget(statusLabel);
diff --git a/examples/network/multistreamserver/server.h b/examples/network/multistreamserver/server.h
index 6d01f7a238..d9a38e61a4 100644
--- a/examples/network/multistreamserver/server.h
+++ b/examples/network/multistreamserver/server.h
@@ -1,12 +1,22 @@
 /****************************************************************************
 **
 ** Copyright (C) 2016 Alex Trotsenko <alex1973tr@gmail.com>
-** Contact: http://www.qt.io/licensing/
+** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
-** You may use this file under the terms of the BSD license as follows:
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
@@ -71,14 +81,6 @@ private slots:
     void writeDatagram(QSctpSocket *to, const QByteArray &ba);
 
 private:
-    enum ChannelNumber {
-        Movie = 0,
-        Time = 1,
-        Chat = 2,
-
-        NumberOfChannels = 3
-    };
-
     QVector<Provider *> providers;
     QSctpServer *sctpServer;
     QList<QSctpSocket *> connections;
diff --git a/examples/network/multistreamserver/timeprovider.cpp b/examples/network/multistreamserver/timeprovider.cpp
index 043810cdf3..fb50baac26 100644
--- a/examples/network/multistreamserver/timeprovider.cpp
+++ b/examples/network/multistreamserver/timeprovider.cpp
@@ -1,12 +1,22 @@
 /****************************************************************************
 **
 ** Copyright (C) 2016 Alex Trotsenko <alex1973tr@gmail.com>
-** Contact: http://www.qt.io/licensing/
+** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
-** You may use this file under the terms of the BSD license as follows:
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
@@ -55,6 +65,8 @@ void TimeProvider::readDatagram(QSctpSocket &from, const QByteArray &ba)
     QTime clientTime;
 
     in_ds >> clientTime;
+    // Send response only if a displayed part of the time is changed.
+    // So, sub-second differences are ignored.
     if (!clientTime.isValid() || curTime.second() != clientTime.second()
         || curTime.minute() != clientTime.minute()
         || curTime.hour() != clientTime.hour()) {
diff --git a/examples/network/multistreamserver/timeprovider.h b/examples/network/multistreamserver/timeprovider.h
index b57c066c24..f99cdbc717 100644
--- a/examples/network/multistreamserver/timeprovider.h
+++ b/examples/network/multistreamserver/timeprovider.h
@@ -1,12 +1,22 @@
 /****************************************************************************
 **
 ** Copyright (C) 2016 Alex Trotsenko <alex1973tr@gmail.com>
-** Contact: http://www.qt.io/licensing/
+** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
-** You may use this file under the terms of the BSD license as follows:
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
diff --git a/examples/network/network.pro b/examples/network/network.pro
index ff7fbcf4f2..6a09acaae8 100644
--- a/examples/network/network.pro
+++ b/examples/network/network.pro
@@ -34,3 +34,5 @@ qtHaveModule(widgets) {
     contains(QT_CONFIG, openssl-linked):SUBDIRS += securesocketclient
     contains(QT_CONFIG, sctp):SUBDIRS += multistreamserver multistreamclient
 }
+
+EXAMPLE_FILES = shared
diff --git a/examples/network/shared/sctpchannels.h b/examples/network/shared/sctpchannels.h
new file mode 100644
index 0000000000..f8d78ee33b
--- /dev/null
+++ b/examples/network/shared/sctpchannels.h
@@ -0,0 +1,62 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 Alex Trotsenko <alex1973tr@gmail.com>
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of The Qt Company Ltd nor the names of its
+**     contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef SCTPCHANNELS_H
+#define SCTPCHANNELS_H
+
+enum SctpChannels {
+    Movie = 0,
+    Time = 1,
+    Chat = 2,
+
+    NumberOfChannels = 3
+};
+
+#endif