我想获取连接到我的服务器套接字的套接字的 IP 地址。我已经包含了我的代码。
sa_data 不返回类型为“xxx.xxx.xxx.xxx”的 char[14]。相反,它返回 [11][1][xxx][xxx][xxx][xxx][][][][][][][]...[]
。谁能帮忙?
int InitialResult;
char SendMessage[1024];
char ReceiveMessage[1024];
WSADATA WSAData;
addrinfo Hints;
addrinfo *Result;
SOCKET ListenSocket;
SOCKET ClientSocket;
ZeroMemory(&Hints, sizeof(Hints));
Hints.ai_family = AF_INET;
Hints.ai_socktype = SOCK_STREAM;
Hints.ai_protocol = IPPROTO_TCP;
Hints.ai_flags = AI_PASSIVE;
while(1)
{
InitialResult = WSAStartup(MAKEWORD(2,2), &WSAData);
if (InitialResult != 0)
{
cout << "WSA start up failed.";
}
InitialResult = getaddrinfo(NULL, portnumber, &Hints, &Result);
if (InitialResult != 0)
{
cout << "Get address information failed.";
WSACleanup();
}
ListenSocket = socket(Result->ai_family, Result->ai_socktype, Result->ai_protocol);
if (ListenSocket == INVALID_SOCKET)
{
cout << "Socket initialization failed.";
WSACleanup();
}
InitialResult = bind(ListenSocket, Result->ai_addr, (int)Result->ai_addrlen);
if (InitialResult == SOCKET_ERROR)
{
cout << "Bind failed." << portnumber;
closesocket(ListenSocket);
ListenSocket = INVALID_SOCKET;
WSACleanup();
}
InitialResult = listen(ListenSocket, SOMAXCONN);
if (InitialResult == SOCKET_ERROR)
{
cout << "Listen failed." << portnumber;
closesocket(ListenSocket);
ListenSocket = INVALID_SOCKET;
WSACleanup();
}
ClientSocket = accept(ListenSocket, NULL, NULL);
if (ClientSocket == INVALID_SOCKET)
{
cout << "Socket accept failed." << portnumber;
WSACleanup();
}
sockaddr test;
int a = sizeof(test);
cout << "getpeername() return value : " << getpeername(ClientSocket, &test, &a) << endl;
cout << "test.sa_data : " << test.sa_data;
StartReceive(ReceiveMessage, ClientSocket);
strcpy(SendMessage,"Congratulations!! You have successfully transfered some data to G DA.");
StartSend(SendMessage, ClientSocket);
StartSend(portnumber, ClientSocket);
InitialResult = shutdown(ClientSocket, SD_SEND);
if (InitialResult == SOCKET_ERROR)
{
cout << "Shut down failed." << portnumber;
closesocket(ClientSocket);
WSACleanup();
}
closesocket(ClientSocket);
closesocket(ListenSocket);
WSACleanup();
}
最佳答案
accept(2)
的第二个和第三个参数让您无需额外调用 getpeername(2)
即可获得该信息.然后你需要将 binary address 转换为 string representation 像 inet_ntoa(3)
.
关于c++ - getpeername sa_data,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/3402457/