Convenience function for simple hello.

adsbus/opts.c

@@ -98,17 +98,5 @@ bool opts_add_stdout(char *arg) {
 	if (!serializer) {
 		return false;
 	}
-	int fd = dup(1);
-	{
-		// TODO: move into standard location for non-socket fd handling
-		struct buf buf = BUF_INIT, *buf_ptr = &buf;
-		send_hello(&buf_ptr, serializer);
-		if (buf_ptr->length) {
-			if (write(fd, buf_at(buf_ptr, 0), buf_ptr->length) != (ssize_t) buf_ptr->length) {
-				return false;
-			}
-		}
-	}
-	send_new(fd, serializer, NULL);
-	return true;
+	return send_new_hello(dup(1), serializer, NULL);
 }

adsbus/send.c

@@ -136,6 +136,18 @@ void send_new_wrapper(int fd, void *passthrough, struct peer *on_close) {
 	send_new(fd, (struct serializer *) passthrough, on_close);
 }
 
+bool send_new_hello(int fd, struct serializer *serializer, struct peer *on_close) {
+	struct buf buf = BUF_INIT, *buf_ptr = &buf;
+	send_hello(&buf_ptr, serializer);
+	if (buf_ptr->length) {
+		if (write(fd, buf_at(buf_ptr, 0), buf_ptr->length) != (ssize_t) buf_ptr->length) {
+			return false;
+		}
+	}
+	send_new(fd, serializer, on_close);
+	return true;
+}
+
 void send_hello(struct buf **buf_pp, void *passthrough) {
 	struct serializer *serializer = (struct serializer *) passthrough;
 	if (serializer->hello) {

adsbus/send.h

@@ -9,6 +9,7 @@ void send_cleanup(void);
 struct serializer *send_get_serializer(char *);
 void send_new(int, struct serializer *, struct peer *);
 void send_new_wrapper(int, void *, struct peer *);
+bool send_new_hello(int, struct serializer *, struct peer *);
 void send_hello(struct buf **, void *);
 void send_write(struct packet *);
 void send_print_usage(void);