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Networking.cpp
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Networking.cpp
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#include "Networking.h"
#define DEF_SOCK_TIMEOUT (APR_USEC_PER_SEC * 5) //TIMEOUT (ver m�s adelante).
Networking::Networking()
{
apr_initialize();
apr_pool_create(&memoryPool, NULL);
auxiliarSocket = NULL;
principalSocket = NULL;
}
bool Networking::prepareToConnect(std::string ip)
{
bool retVal = false;
apr_status_t rv;
apr_pool_create(&memoryPool, NULL);
rv = apr_sockaddr_info_get(&socketAddres, ip.c_str() , APR_INET, STANDARD_PORT, 0, memoryPool);
if (rv == APR_SUCCESS)
{
rv = apr_socket_create(&principalSocket, APR_INET, SOCK_STREAM, APR_PROTO_TCP, memoryPool); //cambiar UNSPEC por APR_INET
if (rv == APR_SUCCESS)
{
apr_socket_opt_set(principalSocket, APR_SO_NONBLOCK, 1);
apr_socket_timeout_set(principalSocket, DEF_SOCK_TIMEOUT);
retVal = true;
}
else
printf("\nCANNOT CREATE SOCKET TO CONNECT");
}
else
printf("\nCANNOT GET SERVER INFO\n");
return retVal;
}
bool Networking::tryToConnect()
{
bool retVal=false;
apr_status_t rv;
rv = apr_socket_connect(principalSocket, socketAddres);
if (rv == APR_SUCCESS)
{
apr_socket_opt_set(principalSocket, APR_SO_NONBLOCK, 1);
apr_socket_timeout_set(principalSocket, 0);
retVal = true;
}
return retVal;
}
void Networking::abortConnecting()
{
if(principalSocket != NULL)
{
apr_socket_shutdown(principalSocket, APR_SHUTDOWN_READWRITE);
apr_socket_close(principalSocket);
}
principalSocket = NULL;
}
bool Networking::prepareToListen()
{
bool retVal = false;
apr_status_t rv;
apr_socket_t *news;
rv = apr_sockaddr_info_get(&socketAddres, NULL, APR_INET, STANDARD_PORT, 0, memoryPool);
if (rv == APR_SUCCESS)
{
rv = apr_socket_create(&news, APR_INET, SOCK_STREAM, APR_PROTO_TCP, memoryPool);
if (rv == APR_SUCCESS)
{
apr_socket_opt_set(news, APR_SO_NONBLOCK, 1);
apr_socket_timeout_set(news, 0);
apr_socket_opt_set(news, APR_SO_REUSEADDR, 1);
rv = apr_socket_bind(news, socketAddres);
if (rv == APR_SUCCESS)
{
rv = apr_socket_listen(news, SOMAXCONN);
if (rv == APR_SUCCESS)
{
auxiliarSocket = news;
retVal = true;
}
else
printf("\nNOT LISTENING");
}
else
printf("\nfailed to bind socket");
}
else
printf("\ncannot create socket");
}
else
printf("\ncannot get info?");
return retVal;
}
bool Networking::listen()
{
bool retVal=false;
apr_socket_accept(&principalSocket, auxiliarSocket, memoryPool);
if (principalSocket != NULL)
{
apr_socket_shutdown(auxiliarSocket, APR_SHUTDOWN_READWRITE);
apr_socket_opt_set(principalSocket, APR_SO_NONBLOCK, 1);
apr_socket_timeout_set(principalSocket, 0);
retVal = true;
}
return retVal;
}
bool Networking::listen_for_client(double timeout_time)
{
this->prepareToListen();
bool connected = false;
clock_t init_time=clock();//nos deja usar miliseg como sabe los pibes(de stackoverflow)
while( ((clock()-init_time)/(double)CLOCKS_PER_SEC)<timeout_time && !(connected = this->listen()) )
;
if(!connected)
this->abortConnecting();
return connected; //conection established
}
#include "TFTP_Packet.h"
bool Networking::send_packet(TFTP_Packet * pck_to_send)
{
bool retVal = false;
apr_size_t totalSize = pck_to_send->size();
apr_status_t rv;
rv = apr_socket_send(principalSocket, pck_to_send->get_data_pck(), &totalSize);
if (rv == APR_SUCCESS)
{
retVal = true;
std::cout <<"Packet has been sent \n";
pck_to_send->print_packet();
}
return retVal;
}
bool Networking::receive_packet(TFTP_Packet ** pck_to_receive)
{
//unsigned int length;
apr_size_t totalSize = BUFSIZE;
bool retVal = false;
char auxBuffer[BUFSIZE];
apr_status_t rv;
rv = apr_socket_recv(principalSocket,(char *) auxBuffer, &totalSize); //Recieves the paquet and saves the length recieved.
if (APR_STATUS_IS_EOF(rv) || (totalSize == 0))
retVal = false;
else
{
*pck_to_receive = new TFTP_Packet( totalSize, auxBuffer);
std::cout << "Pck Received \n";
(*pck_to_receive)->print_packet();
retVal = true;
}
return retVal;
}
Networking::~Networking()
{
apr_socket_shutdown(principalSocket, APR_SHUTDOWN_READWRITE);
apr_socket_close(principalSocket);
apr_terminate();
}
#include "my_sleep_ms.h"
#define SLEEP_BETWEEN_CHECK 50.0
bool Networking::try_connect_server(double timeout_seconds, std::string ip)//,std::string &server_adress, unsigned int port /*= DEF_REMOTE_PORT*/ ,unsigned int ip_mode /*= DEF_CLIENT_IPMODE*/)
{
this->prepareToConnect(ip);
bool connected = false;
const clock_t begin_time = clock();//Thank you stack overflow <3
double sleep_time = 0; // Clock freezes while sleeping
while( (((clock()-begin_time )/(double)CLOCKS_PER_SEC) + sleep_time )<= timeout_seconds
&& !(connected = this->tryToConnect()) )
{
my_sleep_ms(SLEEP_BETWEEN_CHECK);
sleep_time += SLEEP_BETWEEN_CHECK/1000.0; //In seconds
}
if(!connected)
this->abortConnecting();
return connected;
}
bool Networking::connection_status_ok(void)
{
size_t empty_test = 0;
char buffer[20];
return apr_socket_send( principalSocket, buffer, &empty_test) == APR_SUCCESS;
}