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package main
import (
"encoding/binary"
"flag"
"log"
"net"
)
var listenAddr string
type Encoder interface {
Encode() []any
}
type Handshake struct {
ver uint8
}
func (h Handshake) Encode() []any {
return []any{h.ver}
}
type Test struct {
msg string
}
func (h Test) Encode() []any {
return []any{[]byte(h.msg)}
}
func main() {
flag.StringVar(&listenAddr, "a", "localhost:9999", "Listening address:port")
flag.Parse()
log.Print("starting solec daemon mock")
log.Fatal(listen())
}
func listen() error {
ln, err := net.Listen("tcp", listenAddr)
if err != nil {
return err
}
log.Print("server is listening on: ", listenAddr)
for {
conn, err := ln.Accept()
if err != nil {
log.Print("cannot accept connection: ", err)
}
go handle(conn)
}
}
func handle(conn net.Conn) {
log.Print("received connection from: ", conn.RemoteAddr())
hs := Handshake{
ver: 0x0,
}
if err := send(conn, 0x01, hs); err != nil {
log.Print("cannot send handshake ", err)
return
}
if err := send(conn, 0xFF, Test{msg: "solec kujawski jest zajebisty"}); err != nil {
log.Print("cannot send test message ", err)
return
}
}
func send(conn net.Conn, eType uint8, data Encoder) error {
err := binary.Write(conn, binary.BigEndian, eType)
if err != nil {
return err
}
for _, v := range data.Encode() {
err := binary.Write(conn, binary.BigEndian, v)
if err != nil {
return err
}
}
return nil
}
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