104 lines
2.6 KiB
C++
104 lines
2.6 KiB
C++
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/*
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* ClientSocket 0.2
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* (c) Robert Uhl 2009
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* Datei: ClientSocket.cpp
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* Inhalt: ClientSocket Implementierung
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*/
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#include "ClientSocket.h"
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//#define DEBUG DEBUG // Debugging an/aus(auskommentieren!)
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/*
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* PUBLIC Methoden
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*/
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// Konstruktor, der den Typ des Sockets <20>bergeben bekommt
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ClientSocket::ClientSocket(const int iType) : p_iType(iType), p_iSocket(-1), p_bVerbunden(false) {
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p_iSocket = socket(AF_INET, p_iType, 0); // Socket anlegen
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if (p_iSocket == -1) {
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std::cerr << "--> Socket konnte nicht angelegt werden!" << std::endl;
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}
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}
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// Destruktor
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ClientSocket::~ClientSocket(void) {
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if (p_bVerbunden) {
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Disconnect();
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}
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}
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/*
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* PRIVATE Methoden
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*/
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// Verbindung zum Server aufnehmen
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// R<>ckgabe: true wenn Verbindung erfolgreich aufgebaut
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bool ClientSocket::Connect(const std::string& sServer, const unsigned short iPort) {
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struct sockaddr_in strAdresse;
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struct in_addr strInAdresse;
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struct hostent* strHost;
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if (p_iSocket == -1) {
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std::cerr << "--> Connect(): Socket wurde nicht angelegt!" << std::endl;
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return false;
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}
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if (p_bVerbunden) {
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std::cerr << "--> Connect(): Achtung, noch verbunden! Keine neue Verbindung angelegt!" << std::endl;
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return false;
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}
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// Domainnamen in IP aufl<66>sen
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strHost = gethostbyname(sServer.c_str());
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#ifdef DEBUG
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std::cout << "Host: " << strHost->h_name << std::endl;
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std::cout << "IP: " << inet_ntoa( **(struct in_addr**) strHost->h_addr_list) << std::endl;
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std::cout << "Port: " << iPort << std::endl;
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#endif
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// IP-Adresse f<>r connect() erzeugen
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strInAdresse = **(struct in_addr**) strHost->h_addr_list;
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strAdresse.sin_family = AF_INET;
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strAdresse.sin_port = htons(iPort);
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strAdresse.sin_addr = strInAdresse;
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// Verbindung aufbauen
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if (connect(p_iSocket, (struct sockaddr*) &strAdresse, sizeof(strAdresse)) == -1) {
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std::cerr << "--> connect() nicht erfolgreich!" << std::endl;
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return false;
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} else {
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p_bVerbunden = true;
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return true;
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}
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}
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// Verbindung zum Server abbauen
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void ClientSocket::Disconnect(void) {
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if (close(p_iSocket) == -1) {
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std::cerr << "--> Disconnect(): Konnte die Verbindung nicht schliessen!" << std::endl;
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} else {
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p_bVerbunden = false;
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}
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}
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// Sendet etwas <20>ber das Socket
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bool ClientSocket::Send(const void* vDaten, ssize_t data_len) {
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if (p_iSocket == -1) {
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std::cerr << "--> Send(): Socket wurde nicht angelegt!" << std::endl;
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return false;
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} else if (!p_bVerbunden) {
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std::cerr << "--> Send(): Noch keine Verbindung aufgebaut!" << std::endl;
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return false;
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}
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// Senden
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if (send(p_iSocket, vDaten, data_len, 0) != data_len) {
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std::cerr << "--> Send(): Es konnte nicht alles gesendet werden!" << std::endl;
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return false;
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}
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return true;
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}
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// eof
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