devkitPro

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#include <nds.h>
#include <dswifi9.h>

#include <netinet/in.h>
#include <stdio.h>

#define BUFSIZE 65536
#define PORT 1

#define min(a,b) (((a) < (b)) ? (a) : (b))

int main(void) {
	int serv_sock, sock, conn_addrlen, i, sent, to_send;
	struct sockaddr_in serv_addr, conn_addr;
	uint32 addr;
	char *buf, *buf_p;

	consoleDemoInit();

	iprintf("filling buffer\n");

	buf = malloc(BUFSIZE);
	for(i = 0; i < BUFSIZE; i ++) {
		buf[i] = (char)(i & 0xff);
	}

	iprintf("associating\n");

	Wifi_InitDefault(WFC_CONNECT);

	addr = Wifi_GetIP();
	iprintf("address is %d.%d.%d.%d\n", addr & 0xff, (addr >> 8) & 0xff,
			(addr >> 16) & 0xff, (addr >> 24) & 0xff);

	serv_sock = socket(AF_INET, SOCK_STREAM, 0);
	if(serv_sock == -1) return -1;

	serv_addr.sin_family = AF_INET;
	serv_addr.sin_port = htons(PORT);
	serv_addr.sin_addr.s_addr = htonl(INADDR_ANY);
	if(bind(serv_sock,
		(struct sockaddr *)&serv_addr,
		sizeof(serv_addr))) return -1;

	if(listen(serv_sock, 0)) return -1;

	iprintf("listening\n");

	conn_addrlen = sizeof(conn_addr);
	sock = accept(serv_sock, (struct sockaddr *)&conn_addr,
			&conn_addrlen);
	if(sock == -1) return -1;

	closesocket(serv_sock);

	iprintf("sending\n");

	while(1) {
		buf_p = buf;
		while((buf_p - buf) < BUFSIZE) {
			to_send = BUFSIZE - (buf_p - buf);
			/* to_send = min(BUFSIZE - (buf_p - buf), 1024); */
				
			iprintf("%d bytes at %d: ", to_send, (buf_p - buf));
			sent = send(sock, buf_p, to_send, 0);
			if(sent < 1) {
				iprintf("connection dropped\n");
				return -1;
			}
			iprintf("sent %d\n", sent);
			/* swiWaitForVBlank(); */
			/* swiWaitForVBlank(); */
			buf_p += sent;
		}
	}

}

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defaultExceptionHandler();