Winsock客户端和服务器无法连接
我已经使用winsock2编写了一个客户端和服务器。服务器似乎运行正常,但当我运行客户端时,它立即返回“非套接字上的套接字操作”的10038错误代码。不确定为什么它在is处这样做会创建套接字并返回错误 以下是客户端的代码,它在连接函数调用时失败:Winsock客户端和服务器无法连接,c,winsock2,C,Winsock2,我已经使用winsock2编写了一个客户端和服务器。服务器似乎运行正常,但当我运行客户端时,它立即返回“非套接字上的套接字操作”的10038错误代码。不确定为什么它在is处这样做会创建套接字并返回错误 以下是客户端的代码,它在连接函数调用时失败: #include <stdio.h> #include <winsock2.h> #include <time.h> #pragma comment(lib,"ws2_32.lib") //Winsock Libra
#include <stdio.h>
#include <winsock2.h>
#include <time.h>
#pragma comment(lib,"ws2_32.lib") //Winsock Library
int main(int *argc, char **argv){
struct sockaddr_in server, client;
char server_reply[2000];
WSADATA wsa;
int result = WSAStartup(MAKEWORD(2,2),&wsa);
SOCKET sock, newSock;
if ((sock = socket(AF_INET, SOCK_STREAM, 0) == INVALID_SOCKET)){
printf("Failed to create socketwith error code : %d" , WSAGetLastError());
}
else{
printf("Socket created\n");
}
server.sin_addr.s_addr = inet_addr("127.0.0.1");
server.sin_family = AF_INET;
server.sin_port = htons(8080);
if((newSock = connect(sock , (struct sockaddr *)&server , sizeof(server)) == INVALID_SOCKET )){
printf("connect failed with error code : %d" , WSAGetLastError());
}
else{
printf("connected");
}
closesocket(socket);
WSACleanup();
return 0;
}
#包括
#包括
#包括
#pragma注释(lib,“ws2_32.lib”)//Winsock库
int main(int*argc,char**argv){
服务器、客户端中的结构sockaddr_;
char server_reply[2000];
WSADATA wsa;
int result=WSAStartup(MAKEWORD(2,2),&wsa);
插座袜子,纽索克;
if((sock=socket(AF\u INET,sock\u STREAM,0)=无效的\u socket)){
printf(“创建socket失败,错误代码:%d”,WSAGetLastError());
}
否则{
printf(“已创建套接字”);
}
server.sin_addr.s_addr=inet_addr(“127.0.0.1”);
server.sinu family=AF\u INET;
server.sin_port=htons(8080);
if((newSock=connect(sock,(struct sockaddr*)&server,sizeof(server))==无效的_套接字)){
printf(“连接失败,错误代码:%d”,WSAGetLastError());
}
否则{
printf(“关联”);
}
插座;
WSACleanup();
返回0;
}
我认为有效的服务器代码:
#include<io.h>
#include<stdio.h>
#include<winsock2.h>
#pragma comment(lib,"ws2_32.lib") //Winsock Library
int main(int argc , char *argv[])
{
WSADATA wsa;
SOCKET s , new_socket;
struct sockaddr_in server , client;
int c;
char message[54];
printf("\nInitialising Winsock...");
if (WSAStartup(MAKEWORD(2,2),&wsa) != 0)
{
printf("Failed. Error Code : %d",WSAGetLastError());
return 1;
}
printf("Initialised.\n");
//Create a socket
if((s = socket(AF_INET , SOCK_STREAM , 0 )) == INVALID_SOCKET)
{
printf("Could not create socket : %d" , WSAGetLastError());
}
printf("Socket created.\n");
//Prepare the sockaddr_in structure
server.sin_family = AF_INET;
server.sin_addr.s_addr = INADDR_ANY;
server.sin_port = htons( 8080 );
//Bind
if( bind(s ,(struct sockaddr *)&server , sizeof(server)) == SOCKET_ERROR)
{
printf("Bind failed with error code : %d" , WSAGetLastError());
return 1;
}
puts("Bind done");
//Listen to incoming connections
listen(s , 3);
//Accept and incoming connection
puts("Waiting for incoming connections...");
c = sizeof(struct sockaddr_in);
while( (new_socket = accept(s , (struct sockaddr *)&client, &c)) != INVALID_SOCKET )
{
recv(s, message, 2000, 0);
printf(message);
}
if (new_socket == INVALID_SOCKET)
{
printf("accept failed with error code : %d" , WSAGetLastError());
return 1;
}
closesocket(s);
WSACleanup();
return 0;
}
#包括
#包括
#包括
#pragma注释(lib,“ws2_32.lib”)//Winsock库
int main(int argc,char*argv[])
{
WSADATA wsa;
插座s,新的_插座;
服务器、客户端中的结构sockaddr_;
INTC;
字符消息[54];
printf(“\n初始化Winsock…”);
if(WSAStartup(MAKEWORD(2,2),&wsa)!=0)
{
printf(“失败。错误代码:%d”,WSAGetLastError());
返回1;
}
printf(“已初始化。\n”);
//创建一个套接字
if((s=套接字(AF\u INET,SOCK\u STREAM,0))==无效的套接字)
{
printf(“无法创建套接字:%d”,WSAGetLastError());
}
printf(“已创建套接字。\n”);
//在结构中准备sockaddr_
server.sinu family=AF\u INET;
server.sin\u addr.s\u addr=INADDR\u ANY;
server.sin_port=htons(8080);
//束缚
if(绑定,(结构sockaddr*)和服务器,sizeof(服务器))==SOCKET\u错误)
{
printf(“绑定失败,错误代码:%d”,WSAGetLastError());
返回1;
}
看跌期权(“绑定完成”);
//侦听传入的连接
听(s,3);
//接受和传入连接
puts(“等待传入连接…”);
c=sizeof(结构sockaddr_in);
while((new_socket=accept(s,(struct sockaddr*)和client,&c))!=无效的_socket)
{
recv(s,message,2000,0);
printf(消息);
}
if(新的\u套接字==无效的\u套接字)
{
printf(“接受失败,错误代码:%d”,WSAGetLastError());
返回1;
}
插座;
WSACleanup();
返回0;
}
您将括号设置错误:
if ((sock = socket(AF_INET, SOCK_STREAM, 0) == INVALID_SOCKET))
将0指定给“sock”,您需要以下内容:
if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
在赋值后进行比较,而不是赋值比较结果。这是一个运算符优先级的问题,
==
“赢得”了=
我不明白为什么开发人员在语句中不断使用这些复合表达式。为了节省一两行,他们经常出错:(