ioctlsocket 函数返回值
时间: 2024-01-22 15:02:57 浏览: 33
ioctlsocket函数的返回值是一个整数。如果函数调用成功,它将返回0。如果函数调用失败,它将返回SOCKET_ERROR错误,并且应用程序可以通过调用WSAGetLastError()函数来获取相应的错误代码。
范例:ioctlsocket函数返回值的示例代码如下所示:
```c
#include <winsock2.h>
#include <ws2tcpip.h>
#include <stdio.h>
int main() {
WSADATA wsaData;
if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0) {
printf("Failed to initialize winsock.\n");
return 1;
}
SOCKET sock = socket(AF_INET, SOCK_STREAM, 0);
if (sock == INVALID_SOCKET) {
printf("Failed to create socket.\n");
WSACleanup();
return 1;
}
// Perform ioctlsocket operation
int result = ioctlsocket(sock, FIONBIO, 1);
if (result == SOCKET_ERROR) {
printf("ioctlsocket failed with error code: %d\n", WSAGetLastError());
} else {
printf("ioctlsocket succeeded.\n");
}
closesocket(sock);
WSACleanup();
return 0;
}
```
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