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