Subversion Repositories planix.SVN

#include <plan9.h>

#include <sys/socket.h>	/* various networking crud */

#include <netinet/in.h>

#include <netinet/tcp.h>

#include <netdb.h>

void

getremotehostname(char *name, int nname)

{

	struct sockaddr_in sock;

	struct hostent *hp;

	uint len;

	int on;

	strecpy(name, name+nname, "unknown");

	len = sizeof sock;

	if(getpeername(0, (struct sockaddr*)&sock, (void*)&len) < 0)

		return;

	hp = gethostbyaddr((char *)&sock.sin_addr, sizeof (struct in_addr),

		sock.sin_family);

	if(hp == 0)

		return;

	strecpy(name, name+nname, hp->h_name);

	on = 1;

	setsockopt(0, SOL_SOCKET, SO_KEEPALIVE, (char*)&on, sizeof(on));

#ifdef TCP_NODELAY

	on = 1;

	setsockopt(0, IPPROTO_TCP, TCP_NODELAY, (char*)&on, sizeof(on));

#endif

}