我是套接字編程和C的新手。我正在創建一個簡單的echo客戶端服務器應用程序,該應用程序可以在教程後使用線程支持多個客戶端C客戶端服務器回聲程序在客戶端顯示無效的消息
在應用程序一切正常,除了客戶端的回聲無效的消息精細 看來它代替我輸入
最長的消息我使用的是Windows 7的
的VMware在Fedora 14終端工作的第一個字符這是我如何編譯和運行客戶端和服務器
服務器
[[email protected] ~]$ gcc -pthread -o s server.c
[[email protected] ~]$ ./s
Socket created
bind done
Waiting for incoming connections...
Connection accepted
* 客戶//這裏的問題是*
[[email protected] ~]$ gcc client.c -o c
[[email protected] ~]$ ./c
Socket created
Connected
Enter message : Hello
Server reply :
Hello
Enter message : 123
Server reply :
123lo
Enter message : x
Server reply :
x23lo
Enter message : y
Server reply :
y23lo
Enter message :
以下是我的代碼
//服務器代碼
#include<stdio.h>
#include<string.h> //strlen
#include<sys/socket.h>
#include<arpa/inet.h> //inet_addr
#include<unistd.h> //write
int main(int argc , char *argv[])
{
int socket_desc , client_sock , c , read_size;
struct sockaddr_in server , client;
char client_message[2000];
//Create socket
socket_desc = socket(AF_INET , SOCK_STREAM , 0);
if (socket_desc == -1)
{
printf("Could not create socket");
}
puts("Socket created");
//Prepare the sockaddr_in structure
server.sin_family = AF_INET;
server.sin_addr.s_addr = INADDR_ANY;
server.sin_port = htons(8888);
//Bind
if(bind(socket_desc,(struct sockaddr *)&server , sizeof(server)) < 0)
{
//print the error message
perror("bind failed. Error");
return 1;
}
puts("bind done");
//Listen
listen(socket_desc , 3);
//Accept and incoming connection
puts("Waiting for incoming connections...");
c = sizeof(struct sockaddr_in);
//accept connection from an incoming client
client_sock = accept(socket_desc, (struct sockaddr *)&client, (socklen_t*)&c);
if (client_sock < 0)
{
perror("accept failed");
return 1;
}
puts("Connection accepted");
//Receive a message from client
while((read_size = recv(client_sock , client_message , 2000 , 0)) > 0)
{
//Send the message back to client
write(client_sock , client_message , strlen(client_message));
}
if(read_size == 0)
{
puts("Client disconnected");
fflush(stdout);
}
else if(read_size == -1)
{
perror("recv failed");
}
return 0;
}
//客戶端代碼
#include<stdio.h>
#include<string.h>
#include<sys/socket.h>
#include<arpa/inet.h>
int main(int argc , char *argv[])
{
int sock;
struct sockaddr_in server;
char message[1000] , server_reply[2000];
//Create socket
sock = socket(AF_INET , SOCK_STREAM , 0);
if (sock == -1)
{
printf("Could not create socket");
}
puts("Socket created");
server.sin_addr.s_addr = inet_addr("127.0.0.1");
server.sin_family = AF_INET;
server.sin_port = htons(8888);
//Connect to remote server
if (connect(sock , (struct sockaddr *)&server , sizeof(server)) < 0)
{
perror("connect failed. Error");
return 1;
}
puts("Connected\n");
//keep communicating with server
while(1)
{
printf("Enter message : ");
scanf("%s" , message);
//Send some data
if(send(sock , message , strlen(message) , 0) < 0)
{
puts("Send failed");
return 1;
}
//Receive a reply from the server
if(recv(sock , server_reply , 2000 , 0) < 0)
{
puts("recv failed");
break;
}
puts("Server reply :");
puts(server_reply);
}
close(sock);
return 0;
}
非常感謝MYMNeo。第二個選項解決了問題:)再次感謝 – 2013-03-28 02:58:10