Michael Davidsaver
69 lines
2.0 KiB
C++
69 lines
2.0 KiB
C++
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/*************************************************************************\
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* Copyright (c) 2002 The University of Chicago, as Operator of Argonne
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* National Laboratory.
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* Copyright (c) 2002 The Regents of the University of California, as
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* Operator of Los Alamos National Laboratory.
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* SPDX-License-Identifier: EPICS
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* EPICS Base is distributed subject to a Software License Agreement found
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* in file LICENSE that is included with this distribution.
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\*************************************************************************/
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/*
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* Author: Jeff Hill
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*/
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#if defined(__rtems__)
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# define __BSD_VISIBLE 1
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#endif
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#include "osiSock.h"
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#include "errlog.h"
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LIBCOM_API void epicsStdCall
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epicsSocketEnableAddressReuseDuringTimeWaitState ( SOCKET s )
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{
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#ifdef _WIN32
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/*
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* Note: WINSOCK appears to assign a different functionality for
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* SO_REUSEADDR compared to other OS. With WINSOCK SO_REUSEADDR indicates
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* that simultaneously servers can bind to the same TCP port on the same host!
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* Also, servers are always enabled to reuse a port immediately after
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* they exit ( even if SO_REUSEADDR isn't set ).
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*/
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#else
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int yes = true;
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int status;
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status = setsockopt ( s, SOL_SOCKET, SO_REUSEADDR,
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(char *) & yes, sizeof ( yes ) );
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if ( status < 0 ) {
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errlogPrintf (
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"epicsSocketEnableAddressReuseDuringTimeWaitState: "
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"unable to set SO_REUSEADDR?\n");
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}
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#endif
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}
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static
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void setfanout(SOCKET s, int opt, const char *optname)
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{
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int yes = true;
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int status;
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status = setsockopt ( s, SOL_SOCKET, opt,
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(char *) & yes, sizeof ( yes ) );
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if ( status < 0 ) {
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errlogPrintf (
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"epicsSocketEnablePortUseForDatagramFanout: "
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"unable to set %s?\n", optname);
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}
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}
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void epicsStdCall epicsSocketEnableAddressUseForDatagramFanout ( SOCKET s )
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{
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#define DOIT(sock, opt) setfanout(sock, opt, #opt)
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#ifdef SO_REUSEPORT
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DOIT(s, SO_REUSEPORT);
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#endif
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DOIT(s, SO_REUSEADDR);
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#undef DOIT
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}
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