Problems to send a buffer over a socket

[STRPG]

I am trying to develop a homebrew for nds that will need client-server packet transfers. I started using Palib and/or Nflib and I wasn't able to transfer info so

(After many tries) I decided to modify the httpget example to find a way to transfer just a few bytes, the problem is that the following code works:

 

#include <nds.h>
#include <dswifi9.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <stdio.h>
#include <string.h>

void tosrv(char* url);

int main(void) {

consoleDemoInit();

if(!Wifi_InitDefault(WFC_CONNECT)) {
	iprintf("Failed to connect!");
} else {
	iprintf("Connected\n\n");
	tosrv("xmultivers.servegame.com");	}

while(1) {
	swiWaitForVBlank();
}

return 0;
}

void tosrv(char* url) {

const char * request_text = 
	"			  AB\n	   "
	"							  "
	"									  ";

struct hostent * myhost = gethostbyname( url );

int my_socket;
my_socket = socket( AF_INET, SOCK_STREAM, 0 );

struct sockaddr_in sain;
sain.sin_family = AF_INET;
sain.sin_port = htons(1078);
sain.sin_addr.s_addr= *( (unsigned long *)(myhost->h_addr_list[0]) );
connect( my_socket,(struct sockaddr *)&sain, sizeof(sain) );

 send( my_socket, request_text, strlen(request_text), 0 );
 iprintf( "Sent\n" );
 shutdown(my_socket,0); 
 closesocket(my_socket);
 iprintf ( "Finished\n" );
}

 

 

But this other one doesn't work.

 

#include <nds.h>
#include <dswifi9.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <stdio.h>
#include <string.h>

void tosrv(char* url);

int main(void) {

consoleDemoInit();

if(!Wifi_InitDefault(WFC_CONNECT)) {
	iprintf("Failed to connect!");
} else {
	iprintf("Connected\n\n");
	tosrv("xmultivers.servegame.com");	}

while(1) {
	swiWaitForVBlank();
}

return 0;
}

void tosrv(char* url) {

const char * request_text = "AB";
struct hostent * myhost = gethostbyname( url );

int my_socket;
my_socket = socket( AF_INET, SOCK_STREAM, 0 );

struct sockaddr_in sain;
sain.sin_family = AF_INET;
sain.sin_port = htons(1078);
sain.sin_addr.s_addr= *( (unsigned long *)(myhost->h_addr_list[0]) );
connect( my_socket,(struct sockaddr *)&sain, sizeof(sain) );

 send( my_socket, request_text, strlen(request_text), 0 );
 iprintf( "Sent\n" );
 shutdown(my_socket,0); 
 closesocket(my_socket);
 iprintf ( "Finished\n" );
}

 

The server is writen in perl and works like a charm, the first code sends the packet (using too many bytes), the second code just opens the socket (the server registers a client connecting but doesn't get the packet). Gethostbyname resolves to a local ip address (by resolving a no-ip dns), I searched info about the minimal bytes that can be send with send() but didn't find any info.