/* -*- 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. Change History (most recent first): $Log: ExampleClientApp.c,v $ Revision 1.14 2006/08/14 23:24:46 cheshire Re-licensed mDNSResponder daemon source code under Apache License, Version 2.0 Revision 1.13 2006/02/23 23:38:43 cheshire <rdar://problem/4427969> On FreeBSD 4 "arpa/inet.h" requires "netinet/in.h" be included first Revision 1.12 2004/11/30 22:37:00 cheshire Update copyright dates and add "Mode: C; tab-width: 4" headers Revision 1.11 2004/09/17 01:08:53 cheshire Renamed mDNSClientAPI.h to mDNSEmbeddedAPI.h The name "mDNSClientAPI.h" is misleading to new developers looking at this code. The interfaces declared in that file are ONLY appropriate to single-address-space embedded applications. For clients on general-purpose computers, the interfaces defined in dns_sd.h should be used. Revision 1.10 2004/09/16 01:58:22 cheshire Fix compiler warnings Revision 1.9 2003/08/12 19:56:26 cheshire Update to APSL 2.0 Revision 1.8 2003/07/02 21:19:58 cheshire <rdar://problem/3313413> Update copyright notices, etc., in source code comments Revision 1.7 2003/06/18 05:48:41 cheshire Fix warnings Revision 1.6 2003/03/31 22:44:36 cheshire Add log header */ #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"); }