socket中accept不阻塞的问题,网上的方法不起作用
最近比赛需要,要用到蓝牙通信。我打算用套接字实现,但是在写套接字的程序的时候,accept总是不阻塞,检查发现错误码10014,但是长度也没问题,实在不知道怎么回事了。时间比较急,那位大神懂行的还请帮忙指点一下,感激不尽!
#include <iostream>
#include <cstring>
#include <winsock2.h>
#pragma comment(lib,"Ws2_32.lib")
#include <ws2bth.h>
#include <bthsdpdef.h>
#include <bluetoothapis.h>
#pragma comment(lib, "bthprops.lib")
int main() {
WSADATA wsaData;
int err = WSAStartup(MAKEWORD(2, 2), &wsaData) ;
std::cout <<"startup return: " << err << std::endl;
SOCKET sock = socket(AF_BTH, SOCK_STREAM, BTHPROTO_RFCOMM);
if (sock == SOCKET_ERROR) {
std::cout << "sock define error !" << std::endl;
}
SOCKADDR_BTH bt_addr;
bt_addr.addressFamily = AF_BTH;
bt_addr.port = BT_PORT_ANY;
bt_addr.btAddr = 0;
bt_addr.serviceClassId = GUID_NULL;
std::cout << WSAGetLastError() << std::endl;
err = ::bind(sock, (sockaddr*)&bt_addr, sizeof(bt_addr));
std::cout << WSAGetLastError() << std::endl;
std::cout << "bind return :" <<err<< std::endl;
int l = sizeof(bt_addr);
std::cout <<"get sockname return: "<< getsockname(sock, (sockaddr*)&bt_addr, &l) << std::endl;
err = listen(sock, 1);
std::cout << "lis_return: " << err << std::endl;
SOCKADDR clntAddr;
int l1 = sizeof(SOCKADDR);;
std::cout << l1 << std::endl;
SOCKET clntSock = accept(sock, (SOCKADDR*)&clntAddr, &l1);
if (err = WSAGetLastError()) {
std::cout << "阻塞出错。" << std::endl;
std::cout << "错误码:" << err << std::endl;
}
closesocket(clntSock);
closesocket(sock);
WSACleanup();
return 0;
}