Makefile: renamed blockingUDP header, added blockingUDPConnector.cpp

blockingUDPTransport.cpp: fixed ctor, addedmutex to 'enqueueSendRequest', started using 'sys/socket.h' remote.h: added TransportClient and Connector classes introspectionRegistry.h: organized #includes
2010-12-28 08:59:25 +01:00
parent 15ad456930
commit 06842f7890
7 changed files with 208 additions and 40 deletions
@@ -0,0 +1,68 @@
+/*
+ * blockingUDPConnector.cpp
+ *
+ *  Created on: Dec 27, 2010
+ *      Author: Miha Vitorovic
+ */
+
+/* pvAccess */
+#include "blockingUDP.h"
+#include "remote.h"
+
+/* pvData */
+#include <epicsException.h>
+
+/* EPICSv3 */
+#include <errlog.h>
+
+/* standard */
+#include <sys/types.h>
+#include <sys/socket.h>
+
+namespace epics {
+    namespace pvAccess {
+
+        Transport* BlockingUDPConnector::connect(TransportClient* client,
+                ResponseHandler* responseHandler, osiSockAddr* bindAddress,
+                short transportRevision, short priority) {
+            errlogSevPrintf(errlogInfo, "Creating datagram socket to: %s",
+                    inetAddressToString(bindAddress).c_str());
+
+            SOCKET socket = ::socket(PF_INET, SOCK_DGRAM, 0);
+
+            /* from MSDN:
+             * Note:  If the setsockopt function is called before the bind
+             * function, TCP/IP options will not be checked by using TCP/IP
+             * until the bind occurs. In this case, the setsockopt function
+             * call will always succeed, but the bind function call can fail
+             * because of an early setsockopt call failing.
+             */
+
+            int retval = ::bind(socket, (sockaddr*)&(bindAddress->sa),
+                    sizeof(sockaddr));
+            if(retval<0) {
+                errlogSevPrintf(errlogMajor, "Error binding socket: %s",
+                        strerror(errno));
+                THROW_BASE_EXCEPTION(strerror(errno));
+            }
+
+            // set the socket options
+
+            int optval = 1;     // true
+
+            retval = ::setsockopt(socket, SOL_SOCKET, SO_REUSEADDR, &optval,
+                    sizeof(optval));
+            if(retval<0) errlogSevPrintf(errlogMajor,
+                    "Error binding socket: %s", strerror(errno));
+
+            retval = ::setsockopt(socket, SOL_SOCKET, SO_BROADCAST, &optval,
+                    sizeof(optval));
+
+            // sockets are blocking by default
+
+            return new BlockingUDPTransport(responseHandler, socket,
+                    bindAddress, _sendAddresses, transportRevision);
+        }
+
+    }
+}