CommonLibs: Add shutdown() method to the DatagramSocket class.

This method is useful to abort a blocking operations on a socket during shutdown.

2 files changed, 12 insertions, 0 deletions

diff --git a/CommonLibs/Sockets.cpp b/CommonLibs/Sockets.cpp
index dd7527c..5af82ef 100644
--- a/CommonLibs/Sockets.cpp
+++ b/CommonLibs/Sockets.cpp
@@ -1,5 +1,6 @@
 /*
 * Copyright 2008, 2010 Free Software Foundation, Inc.
+* Copyright 2013 Alexander Chemeris <Alexander.Chemeris@fairwaves.ru>
 *
 *
 * This software is distributed under the terms of the GNU Affero Public License.
@@ -129,6 +130,11 @@ void DatagramSocket::close()
 	::close(mSocketFD);
 }
 
+void DatagramSocket::shutdown()
+{
+  ::shutdown(mSocketFD, SHUT_RDWR);
+}
+
 
 DatagramSocket::~DatagramSocket()
 {
diff --git a/CommonLibs/Sockets.h b/CommonLibs/Sockets.h
index c79f79a..b5219c6 100644
--- a/CommonLibs/Sockets.h
+++ b/CommonLibs/Sockets.h
@@ -1,5 +1,6 @@
 /*
 * Copyright 2008, 2010 Free Software Foundation, Inc.
+* Copyright 2013 Alexander Chemeris <Alexander.Chemeris@fairwaves.ru>
 *
 * This software is distributed under the terms of the GNU Affero Public License.
 * See the COPYING file in the main directory for details.
@@ -134,6 +135,11 @@ public:
 	/** Close the socket. */
 	void close();
 
+  /** Shutdown the socket without destroying the descriptor
+   *  Use this to interrupt blocking read()
+   */
+  void shutdown();
+
 };