学步园

这个代码很简单，用途有两个：

1，刚入门的新同学可以参考。

2，想随手写个测试程序的同学可以拷贝。

server:

<br /> #include <stdlib.h><br /> #include <stdio.h><br /> #include <string.h><br /> #include <errno.h><br /> #include <fcntl.h><br /> #include <endian.h><br /> #include <sys/time.h><br /> #include <sys/types.h><br /> #include <sys/stat.h><br /> #include <sys/types.h><br /> #include <sys/socket.h><br /> #include <sys/un.h><br /> #include <arpa/inet.h><br /> #include <netinet/in.h><br /> int main(int argc, char** argv)<br /> {<br /> if (argc != 2)<br /> {<br /> printf("Usage:/n %s port/n", argv[0]);<br /> return 0;<br /> }</p> <p> int port = atoi(argv[1]);</p> <p> int sock = socket(AF_INET, SOCK_STREAM, 0);<br /> sockaddr_in addr;<br /> addr.sin_family = AF_INET;<br /> addr.sin_port = htons(port);<br /> addr.sin_addr.s_addr = 0;<br /> int on = 1;<br /> setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));<br /> if (bind(sock, (struct sockaddr *) &addr, sizeof(addr)) < 0)<br /> {<br /> perror("bind");<br /> return 0;<br /> }<br /> if (listen(sock, 50) < 0)<br /> {<br /> perror("listen");<br /> return 0;<br /> }<br /> printf("start listening .../nPress Ctrl+C to quit/n/n");<br /> int count = 0;<br /> while (1)<br /> {<br /> accept(sock, 0, 0);<br /> count++;<br /> if (count%100 == 0)<br /> {<br /> printf("accepted: %d/n", count);<br /> }<br /> }</p> <p> return 0;<br /> }<br />

client:

<br /> #include <stdlib.h><br /> #include <stdio.h><br /> #include <unistd.h><br /> #include <string.h><br /> #include <errno.h><br /> #include <fcntl.h><br /> #include <endian.h><br /> #include <sys/time.h><br /> #include <sys/types.h><br /> #include <sys/stat.h><br /> #include <sys/types.h><br /> #include <sys/socket.h><br /> #include <sys/un.h><br /> #include <arpa/inet.h><br /> #include <netinet/in.h><br /> int main(int argc, char** argv)<br /> {<br /> if (argc != 3)<br /> {<br /> printf("Usage:/n %s ip port/n", argv[0]);<br /> return 0;<br /> }<br /> char* ip = argv[1];<br /> int port = atoi(argv[2]);</p> <p> sockaddr_in addr;<br /> addr.sin_family = AF_INET;<br /> addr.sin_port = htons(port);<br /> addr.sin_addr.s_addr = inet_addr(ip);</p> <p> printf("client running .../nPress Ctrl+C to quit/n/n");<br /> int count = 0;<br /> while (1)<br /> {<br /> int sock = socket(AF_INET, SOCK_STREAM, 0);</p> <p> if (connect(sock, (sockaddr*)&addr, sizeof(addr)) < 0)<br /> {<br /> perror("connect");<br /> return 0;<br /> }<br /> close(sock);</p> <p> //usleep(10*1000);</p> <p> count++;<br /> if (count%100 == 0)<br /> {<br /> printf("connected: %d/n", count);<br /> }<br /> }</p> <p> return 0;<br /> }<br />