////////////////////////////////////
//服务器代码
///////////////////////////////////
//本文件是服务器的代码
#include <netinet/in.h> // for sockaddr_in
#include <sys/types.h> // for socket
#include <sys/socket.h> // for socket
#include <stdio.h> // for printf
#include <stdlib.h> // for exit
#include <string.h> // for bzero
#include <time.h> //for time_t and time
#define HELLO_WORLD_SERVER_PORT 7754
#define LENGTH_OF_LISTEN_QUEUE 20
#define BUFFER_SIZE 1024
int main(int argc, char **argv)
{
//设置一个socket地址结构server_addr,代表服务器internet地址, 端口
struct sockaddr_in server_addr;
bzero(&server_addr,sizeof(server_addr)); //把一段内存区的内容全部设置为0
server_addr.sin_family = AF_INET;
server_addr.sin_addr.s_addr = htons(INADDR_ANY);
server_addr.sin_port = htons(HELLO_WORLD_SERVER_PORT);
// time_t now;
FILE *stream;
//创建用于internet的流协议(TCP)socket,用server_socket代表服务器socket
int server_socket = socket(AF_INET,SOCK_STREAM,0);
if( server_socket < 0)
{
printf("Create Socket Failed!");
exit(1);
}
//把socket和socket地址结构联系起来
if( bind(server_socket,(struct sockaddr*)&server_addr,sizeof(server_addr)))
{
printf("Server Bind Port : %d Failed!", HELLO_WORLD_SERVER_PORT);
exit(1);
}
//server_socket用于监听
if ( listen(server_socket, LENGTH_OF_LISTEN_QUEUE) )
{
printf("Server Listen Failed!");
exit(1);
}
while (1) //服务器端要一直运行
{
struct sockaddr_in client_addr;
socklen_t length = sizeof(client_addr);
int new_server_socket = accept(server_socket,(struct sockaddr*)&client_addr,&length);
if ( new_server_socket < 0)
{
printf("Server Accept Failed!\n");
break;
}
char buffer[BUFFER_SIZE];
bzero(buffer, BUFFER_SIZE);
strcpy(buffer,"Hello,World! 从服务器来！");
strcat(buffer,"\n"); //C语言字符串连接
send(new_server_socket,buffer,BUFFER_SIZE,0);
bzero(buffer,BUFFER_SIZE);
//接收客户端发送来的信息到buffer中
length = recv(new_server_socket,buffer,BUFFER_SIZE,0);
if (length < 0)
{
printf("Server Recieve Data Failed!\n");
exit(1);
}
printf("\n%s",buffer);
if((stream = fopen("data1","r"))==NULL)
{
printf("The file 'data1' was not opened! \n");
exit(1);
}
else
printf("The file 'filename' was opened! \n");
bzero(buffer,BUFFER_SIZE);
int lengsize = 0;
while((lengsize = fread(buffer,1,1024,stream)) > 0)
{
printf("lengsize = %d\n",lengsize);
if(send(new_server_socket,buffer,lengsize,0)<0)
{
printf("Send File is Failed\n");
break;
}
bzero(buffer, BUFFER_SIZE);
}
if(fclose(stream))
printf("The file 'data' was not closed! \n");
exit(1);
//关闭与客户端的连接
close(new_server_socket);
}
//关闭监听用的socket
close(server_socket);
return 0;
}
////////////////////////////////////
//客户端代码
///////////////////////////////////
//本文件是客户机的代码
#include <netinet/in.h> // for sockaddr_in
#include <sys/types.h> // for socket
#include <sys/socket.h> // for socket
#include <stdio.h> // for printf
#include <stdlib.h> // for exit
#include <string.h> // for bzero
#include <time.h> //for time_t and time
#include <arpa/inet.h>
#define HELLO_WORLD_SERVER_PORT 7754
#define BUFFER_SIZE 1024
int main(int argc, char **argv)
{
if (argc != 2)
{
printf("Usage: ./%s ServerIPAddress\n",argv[0]);
exit(1);
}
//time_t now;
FILE *stream;
//设置一个socket地址结构client_addr,代表客户机internet地址, 端口
struct sockaddr_in client_addr;
bzero(&client_addr,sizeof(client_addr)); //把一段内存区的内容全部设置为0
client_addr.sin_family = AF_INET; //internet协议族
client_addr.sin_addr.s_addr = htons(INADDR_ANY);//INADDR_ANY表示自动获取本机地址
client_addr.sin_port = htons(0); //0表示让系统自动分配一个空闲端口
//创建用于internet的流协议(TCP)socket,用client_socket代表客户机socket
int client_socket = socket(AF_INET,SOCK_STREAM,0);
if( client_socket < 0)
{
printf("Create Socket Failed!\n");
exit(1);
}
//把客户机的socket和客户机的socket地址结构联系起来
if( bind(client_socket,(struct sockaddr*)&client_addr,sizeof(client_addr)))
{
printf("Client Bind Port Failed!\n");
exit(1);
}