direct communication channel now setup between agent and converge server

cmd/comms/agentserver.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"github.com/hashicorp/yamux"
 	"io"
+	"log"
 	"net"
 )
 
@@ -20,25 +21,49 @@ const (
 )
 
 func NewCommChannel(role Role, wsConn io.ReadWriteCloser) (CommChannel, error) {
+	var commChannel CommChannel
 	switch role {
 	case Agent:
 		listener, err := yamux.Server(wsConn, nil)
 		if err != nil {
 			return CommChannel{}, err
 		}
-		return CommChannel{
+		commChannel = CommChannel{
 			Peer:    nil,
 			Session: listener,
-		}, nil
+		}
 	case ConvergeServer:
 		clientSession, err := yamux.Client(wsConn, nil)
 		if err != nil {
 			return CommChannel{}, err
 		}
-		return CommChannel{
+		commChannel = CommChannel{
 			Peer:    nil,
 			Session: clientSession,
-		}, nil
+		}
+	default:
+		panic(fmt.Errorf("Undefined role %d", role))
 	}
-	return CommChannel{}, fmt.Errorf("Undefined role %d", role)
+
+	// communication from Agent to ConvergeServer
+
+	switch role {
+	case Agent:
+		conn, err := commChannel.Session.OpenStream()
+		commChannel.Peer = conn
+		if err != nil {
+			return CommChannel{}, err
+		}
+	case ConvergeServer:
+		conn, err := commChannel.Session.Accept()
+		commChannel.Peer = conn
+		if err != nil {
+			return CommChannel{}, err
+		}
+	default:
+		panic(fmt.Errorf("Undefined role %d", role))
+	}
+
+	log.Println("Communication channel between agent and converge server established")
+	return commChannel, nil
 }