Вывести список подключенных клиентов
30.03.2016, 11:34. Показов 1461. Ответов 1
Здравствуйте дорогие форумчане. Подскажите пожалуйста:
1. Как вывести список подключенных клиентов (для формы Клиенты)
2. И как клиенту выбрать из списка любого, и отправить ему сообщение?
Я знаю только как клиент-сервер.
Сервер:
| C++ | 1
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| private: System::Void Form1_Activated(System::Object^ sender, System::EventArgs^ e) {
WSADATA WSAData;
int rc;
char Name[101], *IpAddr, Buf[1000];
PHOSTENT phe;
//listBox1->Items->Add("111");
if (f==1) return;
f = 1;
rc = WSAStartup(MAKEWORD(2,0), &WSAData);
if (rc != 0) {
listBox1->Items->Add("Ошибка инициализации WSAStartup");
return;
} // if
TCPSocket = socket(AF_INET, SOCK_STREAM, 0);
if (TCPSocket == INVALID_SOCKET) {
listBox1->Items->Add("Протокол TCP установлен.");
} // if
memset(&OurAddress, 0, sizeof(OurAddress));
OurAddress.sin_family = AF_INET;
OurAddress.sin_port = SERVER_PORT;
rc =bind(TCPSocket, (LPSOCKADDR)&OurAddress, sizeof(sockaddr_in));
if (rc == SOCKET_ERROR) {
listBox1->Items->Add("Адресная ошибка");
return;
} // if
rc = WSAAsyncSelect(TCPSocket, (HWND)(this->Handle.ToInt32()), WSA_NETACCEPT, FD_ACCEPT);
if (rc != 0) {
listBox1->Items->Add("Ошибка WSAAsyncSelect");
return;
} // if
rc = listen(TCPSocket, 1);
if (rc == SOCKET_ERROR) {
listBox1->Items->Add("Ошибка listen");
return;
} // if
gethostname(Name, 101);
strcpy(Buf, "Имя компьютера ");
strcat(Buf, Name);
String ^ s= gcnew String(Buf);
listBox1->Items->Add(s);
phe = gethostbyname(Name);
if (phe != NULL) {
memcpy((void *)&(OurAddress.sin_addr), phe->h_addr, phe->h_length);
IpAddr = inet_ntoa(OurAddress.sin_addr);
strcpy(Buf, "IP-Адрес ");
strcat(Buf, IpAddr);
String ^ s2= gcnew String(Buf);
listBox1->Items->Add(s2);
} // if
listBox1->Items->Add(L"Сервер запущен");
} // Form1_Activated
// -----------------------------------------------------------------------------------------------------------------
protected:
virtual void WndProc (Message% m) override
{
int rc, l=sizeof(CallAddress);
wchar_t Buf[500];
if (m.Msg == WSA_NETACCEPT) {
if (m.LParam.ToInt32() == FD_ACCEPT) {
TmpSocket = accept((SOCKET)m.WParam.ToInt32(), (PSOCKADDR)&CallAddress, (int *)&l);
if (TmpSocket == INVALID_SOCKET) {
rc = WSAGetLastError();
listBox1->Items->Add(String::Format( "Ошибка accept {0}", rc ));
return;
} // if
rc = WSAAsyncSelect(TmpSocket, (HWND)(this->Handle.ToInt32()), WSA_NETEVENT, FD_READ|FD_CLOSE);
if (rc != 0) {
listBox1->Items->Add("Ошибка WSAAsyncSelect");
return;
} // if
comboBox1->Items->Add(gcnew String(inet_ntoa(CallAddress.sin_addr)));
comboBox3->Items->Add(TmpSocket);
comboBox1->Text = gcnew String(inet_ntoa(CallAddress.sin_addr));
comboBox3->Text = Convert::ToString((int)TmpSocket);
listBox1->Items->Add("Канал создан");
} // if
} // if
if (m.Msg == WSA_NETEVENT) {
int Sock = m.WParam.ToInt32();
if (m.LParam.ToInt32() == FD_READ) {
rc = recv((SOCKET)m.WParam.ToInt32(), (char *)Buf, sizeof(Buf)-1, 0);
if (rc == SOCKET_ERROR) {
rc = WSAGetLastError();
listBox1->Items->Add(String::Format( "Ошибка recv {0}", rc ));
return;
} // if
if (rc >= 1) {
String ^ s= gcnew String(Buf);
int nPos = s->IndexOf("|");
String ^SNik = s->Substring(0, nPos);
String ^SMsg = s->Substring(nPos + 1);
listBox2->Items->Add(SMsg);
for (int i = 0; i < comboBox3->Items->Count; i++) {
int iSock = Convert::ToInt32(comboBox3->Items[i]->ToString());
if (iSock == Sock) {
if (i < comboBox2->Items->Count) {
comboBox2->Items[i] = SNik;
} else {
for (int j = comboBox2->Items->Count; j < i; j++) {
comboBox2->Items->Add(" ");
}
comboBox2->Items->Add(SNik);
comboBox2->Text = SNik;
}
} // if
} // for
} // if
} else {
for (int i = 0; i < comboBox3->Items->Count; i++) {
int iSock = Convert::ToInt32(comboBox3->Items[i]->ToString());
if (iSock == Sock) {
comboBox1->Items->RemoveAt(i);
comboBox2->Items->RemoveAt(i);
comboBox3->Items->RemoveAt(i);
if (comboBox1->Items->Count > 0) {
comboBox1->Text = comboBox1->Items[0]->ToString();
comboBox2->Text = comboBox2->Items[0]->ToString();
comboBox3->Text = comboBox3->Items[0]->ToString();
} else {
comboBox1->Text = "";
comboBox2->Text = "";
comboBox3->Text = "";
} // if
} // if
} // for
listBox1->Items->Add("Канал разорван");
} // else
} // if
Form::WndProc( m );
} // WndProc
// -----------------------------------------------------------------------------------------------------------------
private: System::Void button1_Click(System::Object^ sender, System::EventArgs^ e) {
int rc, i, l;
wchar_t Buf[501];
l = textBox1->Text->Length;
if (l == 0) return;
for (i=0; i < l; i++) {
Buf[i] = textBox1->Text->default[i];
Buf[i+1] = 0;
} // for
SOCKET Sock = (SOCKET)(Convert::ToInt32(comboBox3->Text));
rc = send(Sock, (char *)Buf, 2*l+2, 0);
if (rc == SOCKET_ERROR) {
rc = WSAGetLastError();
listBox1->Items->Add(String::Format( "Ошибка send {0}", rc ));
return;
} // if
listBox1->Items->Add(textBox1->Text);
} // button1_Click
// -----------------------------------------------------------------------------------------------------------------
private: System::Void Form1_FormClosed(System::Object^ sender, System::Windows::Forms::FormClosedEventArgs^ e) {
closesocket(TCPSocket);
WSACleanup();
} //Form1_FormClosed
private: System::Void comboBox1_SelectedIndexChanged(System::Object^ sender, System::EventArgs^ e) {
int si = comboBox1->SelectedIndex;
comboBox3->SelectedIndex = si;
if (comboBox2->Items->Count > si) comboBox2->SelectedIndex = si;
else comboBox2->Text = " ";
}
private: System::Void comboBox3_SelectedIndexChanged(System::Object^ sender, System::EventArgs^ e) {
int si = comboBox3->SelectedIndex;
comboBox1->SelectedIndex = si;
if (comboBox2->Items->Count > si) comboBox2->SelectedIndex = si;
else comboBox2->Text = " ";
}
private: System::Void comboBox2_SelectedIndexChanged(System::Object^ sender, System::EventArgs^ e) {
int si = comboBox2->SelectedIndex;
comboBox1->SelectedIndex = si;
comboBox3->SelectedIndex = si;
}
};
} |
|
Клиент:
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| private: System::Void Form1_Activated(System::Object^ sender, System::EventArgs^ e) {
WSADATA WSAData;
int rc;
char Name[101], *IpAddr, Buf[1000];
PHOSTENT phe;
if (f==1) return;
f = 1;
rc = WSAStartup(MAKEWORD(2,0), &WSAData);
if (rc != 0) {
listBox1->Items->Add("Ошибка инициализации WSAStartup");
return;
} // if
TCPSocket = socket(AF_INET, SOCK_STREAM, 0);
if (TCPSocket == INVALID_SOCKET) {
listBox1->Items->Add("Протокол TCP установлен.");
} // if
int i;
for (i = 0; i<64*1024; i++) {
memset(&OurAddress, 0, sizeof(OurAddress));
OurAddress.sin_family = AF_INET;
OurAddress.sin_port = CLIENT_PORT+i;
rc = bind(TCPSocket, (LPSOCKADDR)&OurAddress, sizeof(sockaddr_in));
if (rc != SOCKET_ERROR) {
break;
} // if
} // while
if (i == 64 * 1024) {
listBox1->Items->Add("Адресная ошибка");
return;
}
/*
rc = WSAAsyncSelect(UDPSocket, (HWND)(this->Handle.ToInt32()), WSA_NETEVENT, FD_READ);
if (rc != 0) {
listBox1->Items->Add("Ошибка WSAAsyncSelect");
return;
} // if
*/
gethostname(Name, 101);
strcpy(Buf, "Имя компьютера ");
strcat(Buf, Name);
String ^ s= gcnew String(Buf);
listBox1->Items->Add(s);
phe = gethostbyname(Name);
if (phe != NULL) {
memcpy((void *)&(OurAddress.sin_addr), phe->h_addr, phe->h_length);
IpAddr = inet_ntoa(OurAddress.sin_addr);
strcpy(Buf, "IP-Адрес ");
strcat(Buf, IpAddr);
String ^ s2= gcnew String(Buf);
listBox1->Items->Add(s2);
} // if
listBox1->Items->Add(L"Клиент запущен");
}
// -----------------------------------------------------------------------------------------------------------------
protected: virtual void WndProc (Message% m) override
{
int rc, l=sizeof(CallAddress);
wchar_t Buf[500];
if (m.Msg == WSA_NETEVENT) {
if (m.LParam.ToInt32() == FD_READ) {
rc = recv((SOCKET)m.WParam.ToInt32(), (char *)Buf, sizeof(Buf)-1, 0);
if (rc == SOCKET_ERROR) {
rc = WSAGetLastError();
listBox1->Items->Add(String::Format( "Ошибка recv {0}", rc ));
return;
} // if
if (rc >= 1) {
String ^ s= gcnew String(Buf);
listBox2->Items->Add(s);
} // if
} // if
} // if
Form::WndProc( m );
} // WndProc
// -----------------------------------------------------------------------------------------------------------------
private: System::Void button2_Click(System::Object^ sender, System::EventArgs^ e) {
int rc, l, i;
char Buf[500];
wchar_t Buf2[1000];
PHOSTENT phe;
l = textBox1->Text->Length;
if (l > 0 && textBox4->Text->Length > 0) {
String ^s = textBox4->Text + "|" + textBox1->Text;
int l2 = s->Length;
for (i=0; i < l2; i++) {
Buf2[i] = s->default[i];
Buf2[i+1] = 0;
} // for
rc = send(TCPSocket, (char *)Buf2, 2*l2+2, 0);
if (rc == SOCKET_ERROR) {
rc = WSAGetLastError();
listBox1->Items->Add(String::Format( "Ошибка recv {0}", rc ));
return;
} // if
String ^ s2= gcnew String(Buf2);
listBox2->Items->Add(s2);
} // if
}
private: System::Void button3_Click(System::Object^ sender, System::EventArgs^ e)
{
shutdown(TCPSocket,1);
}
private: System::Void button1_Click(System::Object^ sender, System::EventArgs^ e) {
int rc, l, i;
char Buf[500];
PHOSTENT phe;
memset(&CallAddress, 0, sizeof(CallAddress));
CallAddress.sin_family = AF_INET;
CallAddress.sin_port = SERVER_PORT;
l = textBox2->Text->Length;
if (l > 0) {
for (i=0; i < l; i++) {
Buf[i] = textBox2->Text->default[i];
Buf[i+1] = 0;
} // for
CallAddress.sin_addr.s_addr = inet_addr(Buf);
} else {
l = textBox3->Text->Length;
if (l > 0) {
for (i=0; i < l; i++) {
Buf[i] = textBox3->Text->default[i];
Buf[i+1] = 0;
} // for
phe = gethostbyname(Buf);
if (phe != NULL) {
memcpy((void *)&(CallAddress.sin_addr), phe->h_addr, phe->h_length);
} // if
} else {
return;
} // else
} // else
rc = connect(TCPSocket, (PSOCKADDR)&CallAddress, sizeof(CallAddress));
if (rc == SOCKET_ERROR) {
rc = WSAGetLastError();
listBox1->Items->Add(String::Format( "Ошибка connect {0}", rc ));
return;
} // if
listBox1->Items->Add("Канал создан");
rc = WSAAsyncSelect(TCPSocket, (HWND)(this->Handle.ToInt32()), WSA_NETEVENT, FD_READ|FD_CLOSE);
if (rc != 0) {
listBox1->Items->Add("Ошибка WSAAsyncSelect");
return;
} // if
}
};
} |
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