无法关闭UDP套接字
打算写一个网络程序,用的是win32套接字,采用了多线程,可是结束程序的时候,需要结束套接字,这时候却无法结束。代码如下:
套接字线程:
UINT WINAPI Hello(PVOID lpParam){
CFileTransferXDlg* pdlg= (CFileTransferXDlg*)lpParam;
pdlg->hello_socket=WSASocket(AF_INET,SOCK_DGRAM,0,NULL,0,0);
struct sockaddr_in local,addrTo;
local.sin_family = AF_INET;
local.sin_port = htons(4444);
local.sin_addr.s_addr = INADDR_ANY;
char buf[100];
int SenderAddrSize = sizeof(addrTo);
bind(pdlg->hello_socket,(struct sockaddr*)&local,sizeof(local));
while(pdlg->exitThread){
recvfrom(pdlg->hello_socket,buf,100,0,(SOCKADDR *) &addrTo,&SenderAddrSize);
//得到ip地址的char形式
char* s=inet_ntoa(addrTo.sin_addr);
//将char转换为unicode下的wchar_t形式
size_t origsize = strlen(s) + 1;
const size_t newsize = 20;
size_t convertedChars = 0;
wchar_t wcstring[newsize];
mbstowcs_s(&convertedChars, wcstring, origsize, s, _TRUNCATE);
CString str;
str.Format(_T("%s向您打招呼"),wcstring);
pdlg->MessageBox(str);
}
return 0;
}
退出程序代码:
closesocket(hello_socket);
OnOK();