deamon: be able to run the server over a unix socket

Signed-off-by: Vincenzo Palazzo <vincenzopalazzodev@gmail.com>

cmd/main.go

@@ -1,6 +1,6 @@
-// / Lightning Network protocol integration tests
+// Lightning Network protocol integration tests
-// /
+//
-// / Author: Vincenzo Palazzo <vincenzopalazzo@member.fsf.org>
+// Author: Vincenzo Palazzo <vincenzopalazzo@member.fsf.org>
 package main
 
 import (
@@ -8,6 +8,8 @@ import (
 	"os"
 
 	"github.com/akamensky/argparse"
+
+	"github.com/vincenzopalazzo/lnprototest-v2/server"
 )
 
 type CmdParser struct {
@@ -31,8 +33,6 @@ func buildCmdParser() (*CmdParser, error) {
 		return nil, err
 	}
 	dataDir := parser.String("d", "data-dir", &argparse.Options{Required: false, Default: home, Help: "data directory for ocean market deamon"})
-	_ = parser.Int("p", "port", &argparse.Options{Required: false, Default: 9090, Help: "Default port where the liquidity provider will listen"})
-	_ = parser.String("a", "address", &argparse.Options{Required: false, Default: "127.0.0.1", Help: "Host where the liquidity provider will listen about new connection"})
 	network := parser.String("n", "network", &argparse.Options{Required: false, Default: "testnet", Help: "The Bitcoin Network"})
 	return &CmdParser{parser: parser, dataDir: dataDir, network: network}, nil
 }
@@ -46,4 +46,12 @@ func main() {
 	if err := parser.Parse(os.Args); err != nil {
 		panic(parser.Usage(err))
 	}
+
+	server, err := server.Make(*parser.dataDir)
+	if err != nil {
+		panic(err)
+	}
+	if err := server.Listen(); err != nil {
+		panic(err)
+	}
 }

server/rpc.go

@@ -1,4 +1,4 @@
-package main
+package server
 
 import (
 	"bytes"
@@ -7,12 +7,12 @@ import (
 	"github.com/btcsuite/btcd/wire"
 )
 
-type ConnectRequest struct {
+type ConnectRPC struct {
 	NodeId string
 	port   uint64
 }
 
-func Connect(request *ConnectRequest, response *ConnectRequest) error {
+func (_ *ConnectRPC) Call(request *ConnectRPC, response *ConnectRPC) error {
 	if err := lnprototestServer.Connect(request.NodeId, uint32(request.port), wire.SimNet); err != nil {
 		return err
 	}
@@ -21,11 +21,11 @@ func Connect(request *ConnectRequest, response *ConnectRequest) error {
 	return nil
 }
 
-type SendRequest struct {
+type SendRPC struct {
 	msg string
 }
 
-func Send(request *SendRequest, response *SendRequest) error {
+func (_ *SendRPC) Call(request *SendRPC, response *SendRPC) error {
 	buff, err := hex.DecodeString(request.msg)
 	if err != nil {
 		return err

server/server.go

@@ -1,6 +1,7 @@
-package main
+package server
 
 import (
+	"errors"
 	"fmt"
 	"net"
 	"net/rpc"
@@ -23,8 +24,12 @@ func Make(datadir string) (*Server, error) {
 }
 
 func (self *Server) RegisterRPCs() error {
-	if err := rpc.Register(Connect); err != nil {
+	if err := rpc.Register(new(ConnectRPC)); err != nil {
-		return nil
+		return err
+	}
+
+	if err := rpc.Register(new(SendRPC)); err != nil {
+		return err
 	}
 	return nil
 }
@@ -35,6 +40,10 @@ func (self *Server) Listen() error {
 	}
 
 	unixPath := fmt.Sprintf("%s/lnprototest.sock", self.dataDir)
+	if _, err := os.Stat(unixPath); !errors.Is(err, os.ErrNotExist) {
+		os.Remove(unixPath)
+	}
+
 	listener, err := net.Listen("unix", unixPath)
 	if err != nil {
 		return err