static int ssh_receive(Socket s, int urgent, char *data, int len) {
static int ssh_receive(Socket skt, int urgent, char *data, int len) {
static int ssh_receive(Socket s, int urgent, char *data, int len) {    if (!len) {	/* Connection has closed. */	sk_close(s);	s = NULL;	return 0;    }    ssh_gotdata (data, len);    if (ssh_state == SSH_STATE_CLOSED) {        if (s) {            sk_close(s);            s = NULL;        }        return 0;    }    return 1;}