131 lines
3.8 KiB
C++
131 lines
3.8 KiB
C++
/*
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* Copyright (c) 2002-2005 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Nathan Binkert
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*/
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <netinet/tcp.h>
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#include <errno.h>
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#include <unistd.h>
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#include "base/types.hh"
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#include "base/misc.hh"
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#include "base/socket.hh"
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using namespace std;
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bool ListenSocket::listeningDisabled = false;
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bool ListenSocket::anyListening = false;
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void
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ListenSocket::disableAll()
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{
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if (anyListening)
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panic("Too late to disable all listeners, already have a listener");
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listeningDisabled = true;
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}
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bool
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ListenSocket::allDisabled()
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{
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return listeningDisabled;
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}
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////////////////////////////////////////////////////////////////////////
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//
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//
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ListenSocket::ListenSocket()
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: listening(false), fd(-1)
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{}
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ListenSocket::~ListenSocket()
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{
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if (fd != -1)
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close(fd);
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}
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// Create a socket and configure it for listening
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bool
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ListenSocket::listen(int port, bool reuse)
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{
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if (listening)
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panic("Socket already listening!");
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fd = ::socket(PF_INET, SOCK_STREAM, 0);
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if (fd < 0)
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panic("Can't create socket:%s !", strerror(errno));
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if (reuse) {
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int i = 1;
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if (::setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char *)&i,
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sizeof(i)) < 0)
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panic("ListenSocket(listen): setsockopt() SO_REUSEADDR failed!");
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}
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struct sockaddr_in sockaddr;
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sockaddr.sin_family = PF_INET;
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sockaddr.sin_addr.s_addr = INADDR_ANY;
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sockaddr.sin_port = htons(port);
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int ret = ::bind(fd, (struct sockaddr *)&sockaddr, sizeof (sockaddr));
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if (ret != 0) {
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if (ret == -1 && errno != EADDRINUSE)
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panic("ListenSocket(listen): bind() failed!");
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return false;
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}
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if (::listen(fd, 1) == -1)
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panic("ListenSocket(listen): listen() failed!");
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listening = true;
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anyListening = true;
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return true;
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}
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// Open a connection. Accept will block, so if you don't want it to,
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// make sure a connection is ready before you call accept.
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int
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ListenSocket::accept(bool nodelay)
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{
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struct sockaddr_in sockaddr;
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socklen_t slen = sizeof (sockaddr);
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int sfd = ::accept(fd, (struct sockaddr *)&sockaddr, &slen);
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if (sfd != -1 && nodelay) {
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int i = 1;
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::setsockopt(sfd, IPPROTO_TCP, TCP_NODELAY, (char *)&i, sizeof(i));
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}
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return sfd;
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}
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