| /* -*- 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"); |
| } |