WSAGetLastError 为 6的错误码说明发送句柄为空，找不到这个句柄，原因是没有 ZerMemory(&over,sizeof(OVERLAPPED)); 对这个结构体初始化后来网上找了很久原因是关于typedef struct _OVERLAPPED { ULONG_PTR Internal; ULONG_PTR InternalHigh; union { struct { DWORD Offset; DWORD OffsetHigh; } DUMMYSTRUCTNAME; PVOID Pointer; } DUMMYUNIONNAME; HANDLE hEvent;} O Read More
