Network.cpp

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#include <tdme/os/network/Network.h>
 
#include <string.h>
 
#include <openssl/ssl.h>
#include <openssl/err.h>
 
#if defined(_WIN32)
    #include <winsock2.h>
    #include <ws2tcpip.h>
#else
    #include <netdb.h>
    #include <arpa/inet.h>
    #include <netinet/in.h>
    #include <sys/socket.h>
#endif
 
#include <string>
 
#include <tdme/tdme.h>
#include <tdme/os/network/NetworkException.h>
#include <tdme/os/network/NetworkSocket.h>
#include <tdme/utilities/Console.h>
 
using tdme::os::network::Network;
 
using std::string;
using std::to_string;
 
using tdme::os::network::NetworkException;
using tdme::os::network::NetworkSocket;
using tdme::utilities::Console;
 
bool Network::initialize() {
    // https support
    SSL_library_init();
    SSL_load_error_strings();
    ERR_load_crypto_strings();
    //
    #if defined(_WIN32)
        WSADATA wsaData;
        auto result = WSAStartup(MAKEWORD(2,2), &wsaData);
        if (result != 0) {
            Console::println("WinSock2 initialization failed: " + to_string(result));
            return false;
        }
    #endif
    return true;
}
 
const string Network::getIpByHostname(const string& hostname) {
    auto hostEnt = gethostbyname(hostname.c_str());
 
    if (hostEnt == nullptr) {
        throw NetworkException("Could not resolve hostname");
    }
 
    switch (hostEnt->h_addrtype) {
    case AF_INET:
        if (hostEnt->h_addr_list[0] != nullptr) {
            struct in_addr addr;
            addr.s_addr = *(uint32_t*)hostEnt->h_addr_list[0];
            return string(inet_ntoa(addr));
        }
        break;
    case AF_INET6:
        if (hostEnt->h_addr_list[0] != nullptr) {
            char ipv6AddressString[46];
            return string(inet_ntop(AF_INET6, (in6_addr*)hostEnt->h_addr_list[0], ipv6AddressString, INET6_ADDRSTRLEN) == NULL?"":ipv6AddressString);
        }
        break;
    }
 
    throw NetworkException("Could not resolve hostname");
}