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/* -*- Mode: C; tab-width: 4 -*-
*
* Copyright (c) 2002-2004 Apple Computer, Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h> // For printf()
#include <stdlib.h> // For exit() etc.
#include <string.h> // For strlen() etc.
#include <unistd.h> // For select()
#include <errno.h> // For errno, EINTR
#include <netinet/in.h> // For INADDR_NONE
#include <arpa/inet.h> // For inet_addr()
#include <netdb.h> // For gethostbyname()
#include <signal.h> // For SIGINT, etc.
#include "mDNSEmbeddedAPI.h" // Defines the interface to the client layer above
#include "mDNSPosix.h" // Defines the specific types needed to run mDNS on this platform
//*******************************************************************************************
// Main
static volatile mDNSBool StopNow;
mDNSlocal void HandleSIG(int signal)
{
(void)signal; // Unused
debugf("%s","");
debugf("HandleSIG");
StopNow = mDNStrue;
}
mDNSexport void ExampleClientEventLoop(mDNS *const m)
{
signal(SIGINT, HandleSIG); // SIGINT is what you get for a Ctrl-C
signal(SIGTERM, HandleSIG);
while (!StopNow)
{
int nfds = 0;
fd_set readfds;
struct timeval timeout;
int result;
// 1. Set up the fd_set as usual here.
// This example client has no file descriptors of its own,
// but a real application would call FD_SET to add them to the set here
FD_ZERO(&readfds);
// 2. Set up the timeout.
// This example client has no other work it needs to be doing,
// so we set an effectively infinite timeout
timeout.tv_sec = 0x3FFFFFFF;
timeout.tv_usec = 0;
// 3. Give the mDNSPosix layer a chance to add its information to the fd_set and timeout
mDNSPosixGetFDSet(m, &nfds, &readfds, &timeout);
// 4. Call select as normal
verbosedebugf("select(%d, %d.%06d)", nfds, timeout.tv_sec, timeout.tv_usec);
result = select(nfds, &readfds, NULL, NULL, &timeout);
if (result < 0)
{
verbosedebugf("select() returned %d errno %d", result, errno);
if (errno != EINTR) StopNow = mDNStrue;
}
else
{
// 5. Call mDNSPosixProcessFDSet to let the mDNSPosix layer do its work
mDNSPosixProcessFDSet(m, &readfds);
// 6. This example client has no other work it needs to be doing,
// but a real client would do its work here
// ... (do work) ...
}
}
debugf("Exiting");
}
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