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udp_lib.cpp
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udp_lib.cpp
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#include "udp_lib.h"
//struct sockaddr_in sock_in_addr, sock_out_addr;
//unsigned char udp_init ( int * sock_in, int* sock_out, char * in_addr, int in_port, char * out_addr, int out_port );
unsigned char udp_init_connect ( int * sock_in, int* sock_out, struct udp_init_struct * udp_init)
{
unsigned char error=0;
struct sockaddr_in sock_in_addr, sock_out_addr;
int sock_out_opt=0;
//int sock_in_opt=1;
fprintf (stderr, "\nUDP LIB: %s %s\n", udp_init->in_addr, udp_init->out_addr);
if (sock_in == 0 || sock_out == 0 || udp_init ==0 )
{
perror ("\nUDP: ERROR: Null pointer for some input parameter !!!\n");
}
*sock_in=socket (PF_INET,SOCK_DGRAM, 0);
*sock_out=socket (PF_INET,SOCK_DGRAM, 0);
if (*sock_in >0)
{
sock_in_addr.sin_family=PF_INET;
sock_in_addr.sin_port=htons (udp_init->in_port);
// sock_in_addr.sin_port=htons (2000);
sock_in_addr.sin_addr.s_addr= inet_addr (udp_init->in_addr) ;
sock_in_addr.sin_zero[0]='\0';
sock_in_addr.sin_zero[1]='\0';
sock_in_addr.sin_zero[2]='\0';
sock_in_addr.sin_zero[3]='\0';
sock_in_addr.sin_zero[4]='\0';
sock_in_addr.sin_zero[5]='\0';
sock_in_addr.sin_zero[6]='\0';
sock_in_addr.sin_zero[7]='\0';
//strcpy (sock_in_addr.sin_zero , "\0\0\0\0\0\0\0" );
// sock_in_addr.sin_addr.s_addr= inet_addr ("127.0.0.1") ;
//sock_in_addr.sin_addr.s_addr= inet_addr ("192.168.127.3") ;
// printf ("\nUDP_addr=%d\n",inet_addr (udp_init->in_addr));
if ( bind (*sock_in, (struct sockaddr *) &sock_in_addr, sizeof (sock_in_addr) ) < 0 )
{
// printf (" \n sock_in=%d Sock_addr_size_my=%d \n ", *sock_in, sizeof (sock_in_addr) );
error |=4;
}
//sock_in_opt=1;
//setsockopt ( *sock_in, 6, TCP_NODELAY, (void*) &sock_in_opt, sizeof (sock_in_opt) );
//sock_in_opt = udp_init->in_buf_size;
//setsockopt ( *sock_in, SOL_SOCKET, SO_RCVBUF, (void*) &sock_in_opt, sizeof (sock_in_opt) );
}
else
{
error |= 1;
}
if (*sock_out >0)
{
sock_out_addr.sin_family=PF_INET;
sock_out_addr.sin_port=htons (udp_init->out_port);
sock_out_addr.sin_addr.s_addr= inet_addr (udp_init->out_addr) ;
sock_out_addr.sin_zero[0]='\0';
sock_out_addr.sin_zero[1]='\0';
sock_out_addr.sin_zero[2]='\0';
sock_out_addr.sin_zero[3]='\0';
sock_out_addr.sin_zero[4]='\0';
sock_out_addr.sin_zero[5]='\0';
sock_out_addr.sin_zero[6]='\0';
sock_out_addr.sin_zero[7]='\0';
sock_out_addr.sin_addr.s_addr= inet_addr (udp_init->out_addr) ;
if ( connect (*sock_out,(struct sockaddr *) &sock_out_addr, sizeof (sock_out_addr) ) < 0 )
{
error |=8;
}
sock_out_opt = udp_init->out_buf_size;
setsockopt ( *sock_out, SOL_SOCKET, SO_SNDBUF, (void*) &sock_out_opt, sizeof (sock_out_opt) );
}
else
{
error |= 2;
}
return error;
}
unsigned char udp_init ( int * sock_in, int* sock_out, struct udp_init_struct * udp_init, struct sockaddr_in * sock_out_addr )
{
unsigned char error=0;
struct sockaddr_in sock_in_addr;
int sock_out_opt=0;
//int sock_in_opt=1;
fprintf (stderr, "\nUDP LIB: %s %s\n", udp_init->in_addr, udp_init->out_addr);
if (sock_in == 0 || sock_out == 0 || udp_init ==0 )
{
perror ("\nUDP: ERROR: Null pointer for some input parameter !!!\n");
}
*sock_in=socket (PF_INET,SOCK_DGRAM, 0);
*sock_out=socket (PF_INET,SOCK_DGRAM, 0);
if (*sock_in >0)
{
sock_in_addr.sin_family=PF_INET;
sock_in_addr.sin_port=htons (udp_init->in_port);
// sock_in_addr.sin_port=htons (2000);
sock_in_addr.sin_addr.s_addr= inet_addr (udp_init->in_addr) ;
sock_in_addr.sin_zero[0]='\0';
sock_in_addr.sin_zero[1]='\0';
sock_in_addr.sin_zero[2]='\0';
sock_in_addr.sin_zero[3]='\0';
sock_in_addr.sin_zero[4]='\0';
sock_in_addr.sin_zero[5]='\0';
sock_in_addr.sin_zero[6]='\0';
sock_in_addr.sin_zero[7]='\0';
//strcpy (sock_in_addr.sin_zero , "\0\0\0\0\0\0\0" );
// sock_in_addr.sin_addr.s_addr= inet_addr ("127.0.0.1") ;
//sock_in_addr.sin_addr.s_addr= inet_addr ("192.168.127.3") ;
// printf ("\nUDP_addr=%d\n",inet_addr (udp_init->in_addr));
if ( bind (*sock_in, (struct sockaddr *) &sock_in_addr, sizeof (sock_in_addr) ) < 0 )
{
// printf (" \n sock_in=%d Sock_addr_size_my=%d \n ", *sock_in, sizeof (sock_in_addr) );
error |=4;
}
//sock_in_opt=1;
//setsockopt ( *sock_in, 6, TCP_NODELAY, (void*) &sock_in_opt, sizeof (sock_in_opt) );
//sock_in_opt = udp_init->in_buf_size;
//setsockopt ( *sock_in, SOL_SOCKET, SO_RCVBUF, (void*) &sock_in_opt, sizeof (sock_in_opt) );
}
else
{
error |= 1;
}
if (*sock_out >0)
{
sock_out_addr->sin_family=PF_INET;
sock_out_addr->sin_port=htons (udp_init->out_port);
sock_out_addr->sin_addr.s_addr= inet_addr (udp_init->out_addr) ;
sock_out_addr->sin_zero[0]='\0';
sock_out_addr->sin_zero[1]='\0';
sock_out_addr->sin_zero[2]='\0';
sock_out_addr->sin_zero[3]='\0';
sock_out_addr->sin_zero[4]='\0';
sock_out_addr->sin_zero[5]='\0';
sock_out_addr->sin_zero[6]='\0';
sock_out_addr->sin_zero[7]='\0';
sock_out_addr->sin_addr.s_addr= inet_addr (udp_init->out_addr);
// if ( connect (*sock_out,(struct sockaddr *) &sock_out_addr-> sizeof (sock_out_addr-> ) < 0 )
// {
// error |=8;
// }
sock_out_opt = udp_init->out_buf_size;
setsockopt ( *sock_out, SOL_SOCKET, SO_SNDBUF, (void*) &sock_out_opt, sizeof (sock_out_opt) );
}
else
{
error |= 2;
}
return error;
}