socket unix domain IPC的实例代码

中国龙卷风 發表於 2024-3-7 00:00:00

<p>
<span><strong>仅供参考：</strong></span></p>
<p>
服务端：socket->bind->listen->send/recv->close</p>
<p>
客户端：socket->bind->connect->send/recv->close</p>
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<code class="xhtml plain">#include <</code><code class="xhtml keyword">sys</code><code class="xhtml plain">/socket.h> </code>
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<code class="xhtml plain">#include <</code><code class="xhtml keyword">sys</code><code class="xhtml plain">/types.h> </code>
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<code class="xhtml plain">#include <</code><code class="xhtml keyword">netinet</code><code class="xhtml plain">/in.h> </code>
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<code class="xhtml plain">#include <</code><code class="xhtml keyword">arpa</code><code class="xhtml plain">/inet.h> </code>
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<code class="xhtml plain">#include <</code><code class="xhtml keyword">errno.h</code><code class="xhtml plain">> </code>
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<code class="xhtml plain">#include <</code><code class="xhtml keyword">fcntl.h</code><code class="xhtml plain">> </code>
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<code class="xhtml plain">#include <</code><code class="xhtml keyword">sys</code><code class="xhtml plain">/un.h> </code>
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<code class="xhtml plain">#include <</code><code class="xhtml keyword">pthread.h</code><code class="xhtml plain">> </code>
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<code class="xhtml plain">#include <</code><code class="xhtml keyword">cstring</code><code class="xhtml plain">> </code>
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<code class="xhtml plain">#include <</code><code class="xhtml keyword">cstdio</code><code class="xhtml plain">> </code>
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<code class="xhtml plain">#include <</code><code class="xhtml keyword">unistd.h</code><code class="xhtml plain">> </code>
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<code class="xhtml plain">#include <</code><code class="xhtml keyword">signal.h</code><code class="xhtml plain">> </code>
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<code class="xhtml spaces"> </code>
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<code class="xhtml plain">#define filename "test.socket" </code>
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<code class="xhtml spaces"> </code>
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<code class="xhtml plain">void setnonblocking(int fd) </code>
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<code class="xhtml plain">{ </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) | O_NONBLOCK); </code>
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<code class="xhtml plain">} </code>
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<code class="xhtml spaces"> </code>
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<code class="xhtml plain">void *client_func(void *arg) </code>
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<code class="xhtml plain">{ </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">sleep(3); </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">int fd = socket(AF_UNIX, SOCK_STREAM, 0); </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">setnonblocking(fd); </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">sockaddr_un un; </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">memset(&un, 0, sizeof(un)); </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">un.sun_family = AF_UNIX; </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">sprintf(un.sun_path, "file_%d.socket", (int)getpid()); </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">unlink(un.sun_path); </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">socklen_t len = sizeof(un); </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">bind(fd, (sockaddr *)&un, sizeof(un)); </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">strcpy(un.sun_path, filename); </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">int ret = connect(fd, (sockaddr *)&un, len); </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">if (ret == -1) </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">{ </code>
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<code class="xhtml spaces">    </code><code class="xhtml plain">printf("connect server failed...\n"); </code>
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<code class="xhtml spaces">    </code><code class="xhtml plain">close(fd); </code>
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<code class="xhtml spaces">    </code><code class="xhtml plain">return NULL; </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">} </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">char buf; </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">memset(buf, 0, sizeof(buf)); </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">strcpy(buf, "hello world"); </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">int n = send(fd, buf, strlen(buf)+1, 0); </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">printf("send data, %d bytes..\n", n); </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">sleep(5); </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">close(fd); </code>
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<code class="xhtml spaces"> </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">return NULL; </code>
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<code class="xhtml plain">} </code>
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<code class="xhtml spaces"> </code>
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<code class="xhtml plain">int main() </code>
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<code class="xhtml plain">{ </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">unlink(filename);   </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">signal(SIGPIPE, SIG_IGN); </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">int fd = socket(AF_UNIX, SOCK_STREAM, 0); </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">int yes = 1; </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(yes)); </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">setnonblocking(fd); </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">sockaddr_un un; </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">memset(&un, 0, sizeof(un)); </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">un.sun_family = AF_UNIX; </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">strcpy(un.sun_path, filename); </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">bind(fd, (sockaddr *)&un, sizeof(un)); </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">listen(fd, 100); </code>
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<code class="xhtml spaces">   </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">pthread_t pid; </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">pthread_create(&pid, NULL, client_func, NULL); </code>
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<code class="xhtml spaces"> </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">sockaddr_un uu; </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">socklen_t len = sizeof(uu); </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">while (true) </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">{ </code>
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<code class="xhtml spaces">    </code><code class="xhtml plain">memset(&uu, 0, len); </code>
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<code class="xhtml spaces">    </code><code class="xhtml plain">int newfd = accept(fd, (sockaddr *)&uu, &len); </code>
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<code class="xhtml spaces">    </code><code class="xhtml plain">if (newfd != -1) </code>
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<code class="xhtml spaces">    </code><code class="xhtml plain">{ </code>
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<code class="xhtml spaces">      </code><code class="xhtml plain">setnonblocking(newfd); </code>
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<code class="xhtml spaces">      </code><code class="xhtml plain">printf("newfd = %d, path = %s\n", newfd, uu.sun_path); </code>
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<code class="xhtml spaces">      </code><code class="xhtml plain">char buf; </code>
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<code class="xhtml spaces">      </code><code class="xhtml plain">memset(buf, 0, sizeof(buf)); </code>
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<code class="xhtml spaces">      </code><code class="xhtml plain">int n = recv(newfd, buf, 512,0); </code>
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<code class="xhtml spaces">      </code><code class="xhtml plain">printf("recv %d bytes, contents is %s\n", n, buf); </code>
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<code class="xhtml spaces">    </code><code class="xhtml plain">} </code>
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<code class="xhtml spaces">    </code><code class="xhtml plain">usleep(100000); </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">} </code>
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<code class="xhtml spaces">   </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">close(fd); </code>
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<code class="xhtml spaces"> </code>
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<code class="xhtml spaces">  </code><code class="xhtml plain">return 0; </code>
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<code class="xhtml plain">}</code>
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<p>
以上就是小编为大家带来的socket unix domain IPC的实例代码全部内容了，希望大家多多支持~</p>

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socket unix domain IPC的实例代码