83 lines
2.8 KiB
C++
83 lines
2.8 KiB
C++
/*
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* blockingUDPConnector.cpp
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*
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* Created on: Dec 27, 2010
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* Author: Miha Vitorovic
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*/
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/* pvAccess */
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#include "blockingUDP.h"
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#include "remote.h"
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/* pvData */
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#include <epicsException.h>
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/* EPICSv3 */
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#include <errlog.h>
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#include <osiSock.h>
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/* standard */
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#include <sys/types.h>
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#include <sys/socket.h>
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namespace epics {
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namespace pvAccess {
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Transport* BlockingUDPConnector::connect(TransportClient* client,
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ResponseHandler* responseHandler, osiSockAddr& bindAddress,
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short transportRevision, int16 priority) {
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errlogSevPrintf(errlogInfo, "Creating datagram socket to: %s",
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inetAddressToString(&bindAddress).c_str());
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SOCKET socket = epicsSocketCreate(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
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if(socket==INVALID_SOCKET) {
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char errStr[64];
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epicsSocketConvertErrnoToString(errStr, sizeof(errStr));
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errlogSevPrintf(errlogMajor, "Error creating socket: %s",
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errStr);
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}
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int optval = _broadcast ? true : false;
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int retval = ::setsockopt(socket, SOL_SOCKET, SO_BROADCAST, &optval,
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sizeof(optval));
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if(retval<0) errlogSevPrintf(errlogMajor,
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"Error setting SO_BROADCAST: %s", strerror(errno));
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printf("_broadcast: %d\n", _broadcast);
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// set the socket options
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//if (_reuseSocket)
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// epicsSocketEnableAddressUseForDatagramFanout(socket);
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optval = _reuseSocket ? true : false;
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retval = ::setsockopt(socket, SOL_SOCKET, SO_REUSEADDR, &optval,
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sizeof(optval));
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if(retval<0) errlogSevPrintf(errlogMajor,
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"Error setting SO_REUSEADDR: %s", strerror(errno));
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printf("_reuseSocket: %d\n", _reuseSocket);
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/* from MSDN:
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* Note: If the setsockopt function is called before the bind
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* function, TCP/IP options will not be checked by using TCP/IP
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* until the bind occurs. In this case, the setsockopt function
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* call will always succeed, but the bind function call can fail
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* because of an early setsockopt call failing.
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*/
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// still we need to set SO_REUSEADDR befire bind
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retval = ::bind(socket, (sockaddr*)&(bindAddress.sa),
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sizeof(sockaddr));
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if(retval<0) {
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errlogSevPrintf(errlogMajor, "Error binding socket: %s",
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strerror(errno));
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THROW_BASE_EXCEPTION(strerror(errno));
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}
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// sockets are blocking by default
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return new BlockingUDPTransport(responseHandler, socket,
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bindAddress, _sendAddresses, transportRevision);
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}
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}
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}
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