Qt 4.8
qlocalserver_tcp.cpp
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41 
42 #include "qlocalserver.h"
43 #include "qlocalserver_p.h"
44 #include "qlocalsocket.h"
45 #include "qlocalsocket_p.h"
46 
47 #include <qhostaddress.h>
48 #include <qsettings.h>
49 #include <qdebug.h>
50 
52 
54 {
56  q->connect(&tcpServer, SIGNAL(newConnection()), SLOT(_q_onNewConnection()));
57 }
58 
59 bool QLocalServerPrivate::listen(const QString &requestedServerName)
60 {
61  if (!tcpServer.listen(QHostAddress::LocalHost))
62  return false;
63 
64  const QLatin1String prefix("QLocalServer/");
65  if (requestedServerName.startsWith(prefix))
66  fullServerName = requestedServerName;
67  else
68  fullServerName = prefix + requestedServerName;
69 
70  QSettings settings(QLatin1String("Trolltech"), QLatin1String("Qt"));
71  if (settings.contains(fullServerName)) {
72  qWarning("QLocalServer::listen: server name is already in use.");
73  tcpServer.close();
74  return false;
75  }
76 
77  settings.setValue(fullServerName, tcpServer.serverPort());
78  return true;
79 }
80 
82 {
83  QSettings settings(QLatin1String("Trolltech"), QLatin1String("Qt"));
84  if (fullServerName == QLatin1String("QLocalServer"))
85  settings.setValue(fullServerName, QVariant());
86  else
87  settings.remove(fullServerName);
88  tcpServer.close();
89 }
90 
91 void QLocalServerPrivate::waitForNewConnection(int msec, bool *timedOut)
92 {
94  tcpServer.waitForNewConnection(msec, timedOut);
95  else if (timedOut)
96  *timedOut = false;
97 }
98 
100 {
101  Q_Q(QLocalServer);
102  QTcpSocket* tcpSocket = tcpServer.nextPendingConnection();
103  if (!tcpSocket) {
104  qWarning("QLocalServer: no pending connection");
105  return;
106  }
107 
108  tcpSocket->setParent(q);
109  const quintptr socketDescriptor = tcpSocket->socketDescriptor();
110  q->incomingConnection(socketDescriptor);
111 }
112 
114 {
115  const QLatin1String prefix("QLocalServer/");
117  if (name.startsWith(prefix))
118  serverName = name;
119  else
120  serverName = prefix + name;
121 
122  QSettings settings(QLatin1String("Trolltech"), QLatin1String("Qt"));
123  if (settings.contains(serverName))
124  settings.remove(serverName);
125 
126  return true;
127 }
128 
The QVariant class acts like a union for the most common Qt data types.
Definition: qvariant.h:92
void setValue(const QString &key, const QVariant &value)
Sets the value of setting key to value.
Definition: qsettings.cpp:3328
int socketDescriptor() const
Returns the native socket descriptor of the QAbstractSocket object if this is available; otherwise re...
bool listen(const QString &name)
QIntegerForSizeof< void * >::Unsigned quintptr
Definition: qglobal.h:986
void waitForNewConnection(int msec, bool *timedOut)
#define QT_END_NAMESPACE
This macro expands to.
Definition: qglobal.h:90
The QSettings class provides persistent platform-independent application settings.
Definition: qsettings.h:73
#define SLOT(a)
Definition: qobjectdefs.h:226
bool startsWith(const QString &s, Qt::CaseSensitivity cs=Qt::CaseSensitive) const
Returns true if the string starts with s; otherwise returns false.
Definition: qstring.cpp:3734
QLatin1String(DBUS_INTERFACE_DBUS))) Q_GLOBAL_STATIC_WITH_ARGS(QString
The QString class provides a Unicode character string.
Definition: qstring.h:83
bool isEmpty() const
Returns true if the list contains no items; otherwise returns false.
Definition: qlist.h:152
void setParent(QObject *)
Makes the object a child of parent.
Definition: qobject.cpp:1950
#define Q_Q(Class)
Definition: qglobal.h:2483
void _q_onNewConnection()
We have received a notification that we can read on the listen socket.
#define SIGNAL(a)
Definition: qobjectdefs.h:227
#define QT_BEGIN_NAMESPACE
This macro expands to.
Definition: qglobal.h:89
QQueue< QLocalSocket * > pendingConnections
const char * name
Q_CORE_EXPORT void qWarning(const char *,...)
The QLocalServer class provides a local socket based server.
Definition: qlocalserver.h:58
The QLatin1String class provides a thin wrapper around an US-ASCII/Latin-1 encoded string literal...
Definition: qstring.h:654
The QTcpSocket class provides a TCP socket.
Definition: qtcpsocket.h:56
void remove(const QString &key)
Removes the setting key and any sub-settings of key.
Definition: qsettings.cpp:3359
bool contains(const QString &key) const
Returns true if there exists a setting called key; returns false otherwise.
Definition: qsettings.cpp:3394
static bool removeServer(const QString &name)