From 66bfedc8cdda5e6b1a7e6096e553f790f72a6b63 Mon Sep 17 00:00:00 2001
From: Mikhail Osipov <mike.osipov@gmail.com>
Date: Thu, 12 Dec 2019 18:04:13 +0300
Subject: explicit server activation

---
 main.c   |  9 ++++++++-
 tunnel.c | 31 +++++++++----------------------
 tunnel.h |  3 +--
 3 files changed, 18 insertions(+), 25 deletions(-)

diff --git a/main.c b/main.c
index e8b0026..800b807 100644
--- a/main.c
+++ b/main.c
@@ -34,9 +34,16 @@ int main(int argc, char *argv[])
 	if (argc == 1)
 		errx(EXIT_FAILURE, "bad usage");
 
+	if (!strcmp(argv[1], "server")) {
+		if (!tunnel_server())
+			errx(EXIT_FAILURE, "start server failed");
+
+		return 0;
+	}
+
 	int sock = tunnel_client();
 	if (sock < 0)
-		errx(EXIT_FAILURE, "tunnel_client failed");
+		errx(EXIT_FAILURE, "init client failed");
 
 	sendcmd(sock, argc - 1, argv + 1);
 
diff --git a/tunnel.c b/tunnel.c
index 2e0718e..27b71ef 100644
--- a/tunnel.c
+++ b/tunnel.c
@@ -19,10 +19,14 @@ struct socket {
 	socklen_t salen;
 };
 
+bool tunnel_daemon(int sock);
+
 static bool socket_connect(struct socket *sock)
 {
-	if (connect(sock->fd, sock->sa, sock->salen) < 0)
+	if (connect(sock->fd, sock->sa, sock->salen) < 0) {
+		warn("connect");
 		return false;
+	}
 
 	return true;
 }
@@ -101,41 +105,24 @@ bool tunnel_server(void)
 
 	defer { socket_free(sock); }
 
-	if (! tunnel_listen(sock))
+	if (!tunnel_listen(sock))
 		return false;
 
-	if (! tunnel_daemon(sock->fd))
+	if (!tunnel_daemon(sock->fd))
 		return false;
 
 	return true;
 }
 
-bool tunnel_connect(struct socket *sock)
-{
-	if (! socket_connect(sock)) {
-		if (errno == ENOENT) {
-			if (! tunnel_server())
-				return false;
-		}
-
-		if (errno != ENOENT || ! socket_connect(sock)) {
-			warn("connect");
-			return false;
-		}
-	}
-
-	return true;
-}
-
 int tunnel_client(void)
 {
 	struct socket *sock = tunnel_socket();
-	if (! sock)
+	if (!sock)
 		return -1;
 
 	defer { socket_free(sock); }
 
-	if (! tunnel_connect(sock))
+	if (!socket_connect(sock))
 		return -1;
 
 	return socket_detach_fd(sock);
diff --git a/tunnel.h b/tunnel.h
index a62f1b8..014a5e5 100644
--- a/tunnel.h
+++ b/tunnel.h
@@ -8,7 +8,6 @@
 bool tunnel_alive(bool *alive);
 
 int tunnel_client(void);
-
-bool tunnel_daemon(int sock);
+bool tunnel_server(void);
 
 #endif
-- 
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