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suzhe
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24
cli.py
Normal file
24
cli.py
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@ -0,0 +1,24 @@
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# 导入 socket、sys 模块
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import socket
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import sys
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# 创建 socket 对象
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s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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# 获取本地主机名
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host = socket.gethostname()
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# 设置端口号
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port = 9999
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# 连接服务，指定主机和端口
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s.connect((host, port))
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# 接收小于 1024 字节的数据
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tex = "this is test"
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s.send(tex.encode('utf-8'))
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msg = s.recv(1024)
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s.close()
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print (msg.decode('utf-8'))
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127
client.c
127
client.c
@ -1,47 +1,86 @@
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#include "stdafx.h"
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#include <WINSOCK2.H>
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#include <STDIO.H>
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#include "inclu.h"
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#pragma comment(lib,"ws2_32.lib")
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int main(int argc, char* argv[])
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/*readline函数实现*/
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ssize_t readline(int fd, char *vptr, size_t maxlen)
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{
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WORD sockVersion = MAKEWORD(2,2);
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WSADATA data;
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if(WSAStartup(sockVersion, &data) != 0)
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{
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return 0;
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}
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SOCKET sclient = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
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if(sclient == INVALID_SOCKET)
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{
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printf("invalid socket !");
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return 0;
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}
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sockaddr_in serAddr;
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serAddr.sin_family = AF_INET;
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serAddr.sin_port = htons(8888);
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serAddr.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");
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if (connect(sclient, (sockaddr *)&serAddr, sizeof(serAddr)) == SOCKET_ERROR)
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{
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printf("connect error !");
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closesocket(sclient);
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return 0;
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}
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char * sendData = "你好，TCP服务端，我是客户端!\n";
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send(sclient, sendData, strlen(sendData), 0);
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char recData[255];
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int ret = recv(sclient, recData, 255, 0);
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if(ret > 0)
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{
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recData[ret] = 0x00;
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printf(recData);
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}
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closesocket(sclient);
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WSACleanup();
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return 0;
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ssize_t n, rc;
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char c, *ptr;
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ptr = vptr;
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for (n = 1; n < maxlen; n++) {
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if ( (rc = read(fd, &c,1)) == 1) {
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*ptr++ = c;
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if (c == '\n')
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break; /* newline is stored, like fgets() */
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} else if (rc == 0) {
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*ptr = 0;
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return(n - 1); /* EOF, n - 1 bytes were read */
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} else
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return(-1); /* error, errno set by read() */
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}
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*ptr = 0; /* null terminate like fgets() */
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return(n);
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}
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int main(int argc , char ** argv)
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{
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/*声明套接字和链接服务器地址*/
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int sockfd;
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struct sockaddr_in servaddr;
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/*判断是否为合法输入*/
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if(argc != 2)
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{
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perror("usage:tcpcli <IPaddress>");
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exit(1);
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}//if
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/*(1) 创建套接字*/
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if((sockfd = socket(AF_INET , SOCK_STREAM , 0)) == -1)
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{
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perror("socket error");
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exit(1);
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}//if
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/*(2) 设置链接服务器地址结构*/
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bzero(&servaddr , sizeof(servaddr));
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servaddr.sin_family = AF_INET;
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servaddr.sin_port = htons(PORT);
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if(inet_pton(AF_INET , argv[1] , &servaddr.sin_addr) < 0)
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{
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printf("inet_pton error for %s\n",argv[1]);
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exit(1);
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}//if
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/*(3) 发送链接服务器请求*/
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if( connect(sockfd , (struct sockaddr *)&servaddr , sizeof(servaddr)) < 0)
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{
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perror("connect error");
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exit(1);
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}//if
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/*(4) 消息处理*/
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char sendline[MAX_LINE] , recvline[MAX_LINE];
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while(fgets(sendline , MAX_LINE , stdin) != NULL)
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{
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write(sockfd , sendline , strlen(sendline));
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if(readline(sockfd , recvline , MAX_LINE) == 0)
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{
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perror("server terminated prematurely");
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exit(1);
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}//if
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if(fputs(recvline , stdout) == EOF)
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{
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perror("fputs error");
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exit(1);
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}//if
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}//while
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/*(5) 关闭套接字*/
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close(sockfd);
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}
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16
inclu.h
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16
inclu.h
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@ -0,0 +1,16 @@
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#include <stdio.h>
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//#include <stdlib.h>
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//#include <string.h>
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#include <sys/socket.h>
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//#include <sys/types.h>
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//#include <unistd.h>
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//#include <errno.h>
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//#include <netinet/in.h>
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//#include <netdb.h>
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//#include <arpa/inet.h>
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//
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//const int MAX_LINE = 2048;
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const int PORT = 6000;
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const int BACKLOG = 10;
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const int LISTENQ = 6666;
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const int MAX_CONNECT = 20;
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25
ser.py
Normal file
25
ser.py
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@ -0,0 +1,25 @@
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# 导入 socket、sys 模块
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import socket
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import sys
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# 创建 socket 对象
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serversocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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# 获取本地主机名
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host = socket.gethostname()
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port = 9999
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# 绑定端口号
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serversocket.bind((host, port))
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# 设置最大连接数，超过后排队
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serversocket.listen(5)
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while True:
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clientsocket,addr = serversocket.accept()
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print("连接地址: %s" % str(addr))
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masg='欢迎访问菜鸟教程！'+ "\r\n"
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msg = clientsocket.recv(1024)
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clientsocket.send(msg)
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clientsocket.close()
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144
server.c
144
server.c
@ -1,75 +1,73 @@
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#include "stdafx.h"
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#include <stdio.h>
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#include <winsock2.h>
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#pragma comment(lib,"ws2_32.lib")
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int main(int argc, char* argv[])
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#include "inclu.h"
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int main(int argc , char **argv)
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{
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//初始化WSA
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WORD sockVersion = MAKEWORD(2,2);
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WSADATA wsaData;
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if(WSAStartup(sockVersion, &wsaData)!=0)
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{
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return 0;
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}
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//创建套接字
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SOCKET slisten = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
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if(slisten == INVALID_SOCKET)
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{
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printf("socket error !");
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return 0;
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}
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//绑定IP和端口
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sockaddr_in sin;
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sin.sin_family = AF_INET;
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sin.sin_port = htons(8888);
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sin.sin_addr.S_un.S_addr = INADDR_ANY;
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if(bind(slisten, (LPSOCKADDR)&sin, sizeof(sin)) == SOCKET_ERROR)
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{
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printf("bind error !");
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}
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//开始监听
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if(listen(slisten, 5) == SOCKET_ERROR)
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{
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printf("listen error !");
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return 0;
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}
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//循环接收数据
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SOCKET sClient;
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sockaddr_in remoteAddr;
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int nAddrlen = sizeof(remoteAddr);
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char revData[255];
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while (true)
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{
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printf("等待连接...\n");
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sClient = accept(slisten, (SOCKADDR *)&remoteAddr, &nAddrlen);
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if(sClient == INVALID_SOCKET)
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{
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printf("accept error !");
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continue;
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}
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printf("接受到一个连接：%s \r\n", inet_ntoa(remoteAddr.sin_addr));
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//接收数据
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int ret = recv(sClient, revData, 255, 0);
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if(ret > 0)
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{
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revData[ret] = 0x00;
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printf(revData);
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}
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//发送数据
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char * sendData = "你好，TCP客户端\n";
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send(sClient, sendData, strlen(sendData), 0);
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closesocket(sClient);
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}
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closesocket(slisten);
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WSACleanup();
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return 0;
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/*声明服务器地址和客户链接地址*/
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struct sockaddr_in servaddr , cliaddr;
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/*声明服务器监听套接字和客户端链接套接字*/
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int listenfd , connfd;
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pid_t childpid;
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/*声明缓冲区*/
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char buf[MAX_LINE];
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socklen_t clilen;
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/*(1) 初始化监听套接字listenfd*/
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if((listenfd = socket(AF_INET , SOCK_STREAM , 0)) < 0)
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{
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perror("socket error");
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exit(1);
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}//if
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/*(2) 设置服务器sockaddr_in结构*/
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bzero(&servaddr , sizeof(servaddr));
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servaddr.sin_family = AF_INET;
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servaddr.sin_addr.s_addr = htonl(INADDR_ANY); //表明可接受任意IP地址
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servaddr.sin_port = htons(PORT);
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/*(3) 绑定套接字和端口*/
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if(bind(listenfd , (struct sockaddr*)&servaddr , sizeof(servaddr)) < 0)
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{
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perror("bind error");
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exit(1);
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}//if
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/*(4) 监听客户请求*/
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if(listen(listenfd , LISTENQ) < 0)
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{
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perror("listen error");
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exit(1);
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}//if
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/*(5) 接受客户请求*/
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for( ; ; )
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{
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clilen = sizeof(cliaddr);
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if((connfd = accept(listenfd , (struct sockaddr *)&cliaddr , &clilen)) < 0 )
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{
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perror("accept error");
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exit(1);
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}//if
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//新建子进程单独处理链接
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if((childpid = fork()) == 0)
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{
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close(listenfd);
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//str_echo
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ssize_t n;
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char buff[MAX_LINE];
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while((n = read(connfd , buff , MAX_LINE)) > 0)
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{
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write(connfd , buff , n);
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}
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exit(0);
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}//if
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close(connfd);
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}//for
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/*(6) 关闭监听套接字*/
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close(listenfd);
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}
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