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/*
* Copyright (c) 2003 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <errno.h>
#include <unistd.h>
#include "host.hh"
#include "misc.hh"
#include "socket.hh"
using namespace std;
////////////////////////////////////////////////////////////////////////
//
//
ListenSocket::ListenSocket()
: listening(false), fd(-1)
{}
ListenSocket::~ListenSocket()
{
if (fd != -1)
close(fd);
}
// Create a socket and configure it for listening
bool
ListenSocket::listen(int port, bool reuse)
{
if (listening)
panic("Socket already listening!");
fd = ::socket(PF_INET, SOCK_STREAM, 0);
if (fd < 0)
panic("Can't create socket!");
if (reuse) {
int i = 1;
if (::setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char *)&i,
sizeof(i)) < 0)
panic("ListenSocket(listen): setsockopt() SO_REUSEADDR failed!");
}
struct sockaddr_in sockaddr;
sockaddr.sin_family = PF_INET;
sockaddr.sin_addr.s_addr = INADDR_ANY;
sockaddr.sin_port = htons(port);
int ret = ::bind(fd, (struct sockaddr *)&sockaddr, sizeof (sockaddr));
if (ret != 0) {
if (ret == -1 && errno != EADDRINUSE)
panic("ListenSocket(listen): bind() failed!");
return false;
}
if (::listen(fd, 1) == -1)
panic("ListenSocket(listen): listen() failed!");
listening = true;
return true;
}
#if !defined(__OpenBSD__) && !defined(linux)
typedef int socklen_t;
#endif
// Open a connection. Accept will block, so if you don't want it to,
// make sure a connection is ready before you call accept.
int
ListenSocket::accept(bool nodelay)
{
struct sockaddr_in sockaddr;
socklen_t slen = sizeof (sockaddr);
int sfd = ::accept(fd, (struct sockaddr *)&sockaddr, &slen);
if (sfd != -1 && nodelay) {
int i = 1;
::setsockopt(sfd, IPPROTO_TCP, TCP_NODELAY, (char *)&i, sizeof(i));
}
return sfd;
}
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