C++ windows socket accept() failed with errorcode 0

Question

Я написал простой проект C/S в VS2012. Но он не работает.

Код сервера:

#include <winsock2.h> 
#pragma comment(lib,"ws2_32.lib") 
#include <iostream> 
#include <string> 
using namespace std; 

#define BU_SIZ 64 

int main(){ 
WSADATA wd; 
SOCKET s; 

if(WSAStartup(MAKEWORD(2,2),&wd) != 0){ 
    cout<<"er stup"; 
    return 0; 
} 
cout<<"V:"<<wd.wVersion<<endl; 
cout<<"H V:"<<wd.wHighVersion<<endl; 
cout<<"Dsp:"<<wd.szDescription<<endl; 
cout<<"Sys:"<<wd.szSystemStatus<<endl; 

s = socket(AF_INET,SOCK_STREAM,0); 
if(s == INVALID_SOCKET){ 
    cout<<"failed in socket"<<endl; 
    WSACleanup(); 
    return -1; 
} 

SOCKADDR_IN sa; 
sa.sin_family = AF_INET; 
sa.sin_port = htons(33333); 
sa.sin_addr.S_un.S_addr = htonl(INADDR_ANY); 

int ret; 
ret = bind(s,(const struct sockaddr*)&sa,sizeof(SOCKADDR_IN)); 
if(ret == SOCKET_ERROR){ 
    cout<<"failed in bind"<<endl; 
    WSACleanup(); 
    return -1; 

} 
ret = listen(s,2); 
if(ret == SOCKET_ERROR){ 
    cout<<"failed in listen"<<endl; 
    WSACleanup(); 
    return -1; 
} 
cout<<"server start"<<endl; 
sockaddr_in ca; 
int ca_len = sizeof(ca); 
SOCKET c; 
c = accept(s,(sockaddr FAR*)&ca,&ca_len); 
int r = WSAGetLastError(); 
if(c = SOCKET_ERROR){ 
    cout<<"failed in accept"<<endl; 
    cout<<r<<endl<<endl; 
    closesocket(s); 
    WSACleanup(); 
    return -1; 
} 
char buf[BU_SIZ]; 
while(1){ 
    ZeroMemory(buf,BU_SIZ); 
    ret = recv(c,buf,BU_SIZ,0); 
    if(ret == SOCKET_ERROR){ 
     cout<<"failed in listen"<<endl; 

     closesocket(s); 
     closesocket(c); 
     WSACleanup(); 
     return -1; 
    } 
    if(strcmp(buf,"quit") == 0){ 
     ret = send(c,"quit",sizeof("quit"),0); 
     break; 
    } 
    else{ 
     cout<<"msg is:"<<buf<<endl; 
    } 
    closesocket(s); 
    closesocket(c); 
    WSACleanup(); 
} 
return 0; 
} 

код клиента:

#include <iostream> 
#include <string> 
#include <WinSock2.h> 
#pragma comment(lib,"WS2_32.lib") 

using namespace std; 
#define BUF_SIZ 64 
int main(){ 
SOCKET c; 
WSADATA wd; 
char buf[BUF_SIZ] = {0}; 
WSAStartup(MAKEWORD(2,2),&wd); 

c = socket(AF_INET,SOCK_STREAM,0); 

SOCKADDR_IN ca; 
ca.sin_family = AF_INET; 
ca.sin_port = htons(33333); 
ca.sin_addr.S_un.S_addr = inet_addr("192.168.199.232"); 
int ret; 
ret = connect(c,(LPSOCKADDR)&ca,sizeof(ca)); 
if(ret == SOCKET_ERROR){ 
    cout<<"fail at conn"<<endl; 
    closesocket(c); 
    WSACleanup(); 
    return -1; 
} 

cout<<"after conn"<<endl; 
while(1){ 
    string st; 
    cin>>st; 
    int i = 0; 
    do{ 
     buf[i] = st[i]; 
    }while(st[i] != 0); 

    ret = send(c,buf,strlen(buf)+1,0); 
    if(ret == SOCKET_ERROR){ 
     cout<<"fail at send"<<endl; 
     closesocket(c); 
     WSACleanup(); 
     return -1; 
    } 
    recv(c,buf,sizeof(buf),0); 
    if(strcmp(buf,"quit") == 0){ 
     break; 
    } 
} 
closesocket(c); 
WSACleanup(); 




return 0; 
} 

После запуска сервер шоу enter image description here AFTRE клиента перспективе: enter image description here

Клиент шоу «после свя ", но он не прекращается.

Answer 1

только потому, что я теряю равный..if (==), но я пишу if (=)