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50
51#include <QtNetwork>
52
53#include "client.h"
54#include "connection.h"
55#include "peermanager.h"
56
57Client::Client()
58{
59 peerManager = new PeerManager(this);
60 peerManager->setServerPort(server.serverPort());
61 peerManager->startBroadcasting();
62
63 connect(sender: peerManager, signal: &PeerManager::newConnection,
64 receiver: this, slot: &Client::newConnection);
65 connect(sender: &server, signal: &Server::newConnection,
66 receiver: this, slot: &Client::newConnection);
67}
68
69void Client::sendMessage(const QString &message)
70{
71 if (message.isEmpty())
72 return;
73
74 for (Connection *connection : qAsConst(t&: peers))
75 connection->sendMessage(message);
76}
77
78QString Client::nickName() const
79{
80 return peerManager->userName() + '@' + QHostInfo::localHostName()
81 + ':' + QString::number(server.serverPort());
82}
83
84bool Client::hasConnection(const QHostAddress &senderIp, int senderPort) const
85{
86 if (senderPort == -1)
87 return peers.contains(akey: senderIp);
88
89 if (!peers.contains(akey: senderIp))
90 return false;
91
92 const QList<Connection *> connections = peers.values(akey: senderIp);
93 for (const Connection *connection : connections) {
94 if (connection->peerPort() == senderPort)
95 return true;
96 }
97
98 return false;
99}
100
101void Client::newConnection(Connection *connection)
102{
103 connection->setGreetingMessage(peerManager->userName());
104
105 connect(sender: connection, signal: &Connection::errorOccurred, receiver: this, slot: &Client::connectionError);
106 connect(sender: connection, signal: &Connection::disconnected, receiver: this, slot: &Client::disconnected);
107 connect(sender: connection, signal: &Connection::readyForUse, receiver: this, slot: &Client::readyForUse);
108}
109
110void Client::readyForUse()
111{
112 Connection *connection = qobject_cast<Connection *>(object: sender());
113 if (!connection || hasConnection(senderIp: connection->peerAddress(),
114 senderPort: connection->peerPort()))
115 return;
116
117 connect(sender: connection, signal: &Connection::newMessage,
118 receiver: this, slot: &Client::newMessage);
119
120 peers.insert(akey: connection->peerAddress(), avalue: connection);
121 QString nick = connection->name();
122 if (!nick.isEmpty())
123 emit newParticipant(nick);
124}
125
126void Client::disconnected()
127{
128 if (Connection *connection = qobject_cast<Connection *>(object: sender()))
129 removeConnection(connection);
130}
131
132void Client::connectionError(QAbstractSocket::SocketError /* socketError */)
133{
134 if (Connection *connection = qobject_cast<Connection *>(object: sender()))
135 removeConnection(connection);
136}
137
138void Client::removeConnection(Connection *connection)
139{
140 if (peers.contains(akey: connection->peerAddress())) {
141 peers.remove(akey: connection->peerAddress());
142 QString nick = connection->name();
143 if (!nick.isEmpty())
144 emit participantLeft(nick);
145 }
146 connection->deleteLater();
147}
148

source code of qtbase/examples/network/network-chat/client.cpp