From b9d3b7ea9df409794eefe48ae1003e8444f519bb Mon Sep 17 00:00:00 2001
From: bt <bt@rctt.net>
Date: Wed, 8 Apr 2026 13:37:56 +0200
Subject: [daemon] Server to server communication

---
 notes.txt         |  3 +++
 server/server.go  | 23 ++++++++++++++++++++++-
 tools/run-many.sh | 13 +++++++++++++
 3 files changed, 38 insertions(+), 1 deletion(-)
 create mode 100644 notes.txt
 create mode 100755 tools/run-many.sh

diff --git a/notes.txt b/notes.txt
new file mode 100644
index 0000000..64817ad
--- /dev/null
+++ b/notes.txt
@@ -0,0 +1,3 @@
+# personal notes and snippets
+
+ifconfig lo0 alias 127.0.0.2
diff --git a/server/server.go b/server/server.go
index 3876bac..712f654 100644
--- a/server/server.go
+++ b/server/server.go
@@ -168,7 +168,7 @@ func (s *Server) handleMessage(conn net.Conn, user User, msg core.Message) error
 		return s.handleLocalMessage(channel, msg)
 	}
 
-	return core.ErrNotSupported
+	return s.handleOutboundMessage(channel, host, msg)
 }
 
 func (s *Server) handleLocalMessage(channel string, msg core.Message) error {
@@ -179,3 +179,24 @@ func (s *Server) handleLocalMessage(channel string, msg core.Message) error {
 
 	return user.Send(msg)
 }
+
+func (s *Server) handleOutboundMessage(channel, host string, msg core.Message) error {
+	conn, err := net.Dial("tcp", host+":9999")
+	if err != nil {
+		return err
+	}
+	defer conn.Close()
+
+	hs := core.Handshake{0, 1}
+	if err := core.Send(conn, hs); err != nil {
+		return err
+	}
+
+	// TODO, servers should not use this type of auth
+	auth := core.Auth{"server", "valid"}
+	if err := core.Send(conn, auth); err != nil {
+		return err
+	}
+
+	return core.Send(conn, msg)
+}
diff --git a/tools/run-many.sh b/tools/run-many.sh
new file mode 100755
index 0000000..9c84e0d
--- /dev/null
+++ b/tools/run-many.sh
@@ -0,0 +1,13 @@
+#!/bin/sh
+
+# to use this script add 127.0.0.2 address to loopback interface and add
+# following lines to hosts file
+# 127.0.0.1	localhost s1
+# 127.0.0.2	s2
+
+tmux \
+	new-session  "go run cmd/daemon/main.go -a 127.0.0.1:9999 -n s1; read" \; \
+	split-window "go run cmd/daemon/main.go -a 127.0.0.2:9999 -n s2; read" \; \
+	split-window "sleep 0.5; go run cmd/client/main.go -u u1 -a s1:9999; read" \; \
+	split-window "sleep 0.5; go run cmd/client/main.go -u u2 -a s2:9999; read" \; \
+	select-layout tiled;
\ No newline at end of file
-- 
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