error("chan_shutdown_write failed for %d/%d %.100s",
error("chan_shutdown_write failed for #%d/fd%d: %.100s",
chan_shutdown_write(Channel *c){	debug("channel %d: shutdown_write", c->self);	if(shutdown(c->sock, SHUT_WR)<0)		error("chan_shutdown_write failed for %d/%d %.100s",			c->self, c->sock, strerror(errno));}