高手帮帮忙
真的很急
我都要急死啦
就是连接不上
//这是服务器端
#include<stdio.h>
#include<winsock2.h>
#include<string.h>
#include<conio.h>
#pragma comment(lib,"Ws2_32.lib")
SOCKET server;
SOCKET client;
WSADATA WSAData;
int WSAreturn;
sockaddr_in local;
sockaddr_in from;
int fromlen = sizeof(from);
char information[50];
char welcome[]="欢迎您登陆YYJW主机!\n";
char receive[256];
char ip[]="您的IP是:";
char chat[256];
char c;
int i=0;
bool cansend=false;
int GetIp()
{
WSAreturn = WSAStartup(0x101,&WSAData);
if(WSAreturn)
{
printf("发生一个未知错误!\n");
return 0;
}
local.sin_family = AF_INET;
local.sin_addr.s_addr = INADDR_ANY;
local.sin_port = htons((u_short)23);
server = socket(AF_INET,SOCK_DGRAM,0);
if(server==INVALID_SOCKET )
{
printf("无法创建套接字!\n");
return 0;
}
if(bind(server,(sockaddr *)&local,sizeof(local))!=0)
{
printf("无法绑定套接字!\n");
return 0;
}
//if(listen(server,5)!=0)
//{
//printf("无法监听端口!\n");
//return 0;
//}
while(true)
{
printf("正在等待用户连接...\n");
//client = accept(server,(struct sockaddr *)&from,&fromlen);
strcpy(information,inet_ntoa(from.sin_addr));
strcat(welcome,information);
printf("接受来自%s的连接...\n",inet_ntoa(from.sin_addr));
printf("正在发送欢迎消息...\n");
send(client,welcome,strlen(welcome),0);
//send(client,ip,strlen(ip),0);
//send(client,information,strlen(information),0);
printf("欢迎消息信息已经成功发送至客户端!\n");
while(1)
{
if(!cansend)
{
printf("正在等待对方发来消息...\n");
cansend=false;
recv(client,receive,sizeof(receive),0);
printf("*********接受到的消息***********\n");
printf("%s\n",receive);
printf("**************结束**************\n");
cansend=true;
}
else
{
printf("请输入下一条消息:");
scanf("%s\0",&chat);
send(client,chat,strlen(chat),0);
printf("\n已经成功发送出信息!\n");
cansend=false;
}
}
closesocket(client);
}
closesocket(server);
WSACleanup();
return 1;
}
void main()
{
int ok;
ok = GetIp();
if(ok==0)
printf("无法完成请求!\n");
getch();
}
//这是客户端
#include<stdio.h>
#include<winsock2.h>
#include<string.h>
#include<conio.h>
#pragma comment(lib,"Ws2_32.lib")
SOCKET client;
WSADATA WSAData;
int WSAreturn;
sockaddr_in to;
char information[256];
char welcome[]="我已经登陆到你的主机!\n";
char receive[256];
char chatto[256];
char servername[256];
char chatfrom[256];
char c;
long result;
bool cansend=true;
int connection()
{
WSAreturn = WSAStartup(0x101,&WSAData);
if(WSAreturn)
{
printf("发生一个未知错误!\n");
return 0;
}
client = socket(AF_INET,SOCK_DGRAM,0);
to.sin_family = AF_INET;
to.sin_port = htons(23);
while(true)
{
printf("请输入要登陆的IP:");
scanf("%s",&servername);
to.sin_addr.s_addr = inet_addr(servername);
printf("正在连接...\n");
result = connect(client,(struct sockaddr *)&to,sizeof(to));
if(SOCKET_ERROR==result)
{
// 连接失败
printf("对不起,无法连接到目标主机!\n");
WSACleanup();
return 0;
}
else
{
cansend=false;
recv(client,receive,sizeof(receive),0);
printf("*******欢迎消息消息*******\n");
printf("%s\n",receive);
printf("***********结束*********\n");
cansend=true;
while(1)
{
if(cansend)
{
printf("请输入下一条信息:");
scanf("%s\0",&chatto);
send(client,chatto,strlen(chatto),0);
printf("\n已经成功发送信息!\n");
cansend=false;
}
else
{
printf("正在等待对方发来消息...\n");
cansend=false;
recv(client,chatfrom,sizeof(chatfrom),0);
printf("*******接收到的消息*******\n");
printf("%s\n",chatfrom);
printf("***********结束*********\n");
cansend=true;
}
}
}
}
closesocket(client);
WSACleanup();
return 1;
}
void main()
{
connection();
getch();
}
