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https://github.com/nonoo/kappanhang.git
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Init
This commit is contained in:
Nonoo
parent
e6d94bff52
commit
6ba02ae285
2
.gitignore
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2
.gitignore
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kappanhang
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__debug_bin
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16
.vscode/launch.json
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16
.vscode/launch.json
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{
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// Use IntelliSense to learn about possible attributes.
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// Hover to view descriptions of existing attributes.
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// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
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"version": "0.2.0",
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"configurations": [
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{
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"name": "Launch",
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"type": "go",
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"request": "launch",
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"mode": "auto",
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"program": "${workspaceFolder}",
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"args": []
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}
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]
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}
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3
.vscode/settings.json
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3
.vscode/settings.json
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{
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"go.lintTool": "golangci-lint"
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}
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17
.vscode/tasks.json
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17
.vscode/tasks.json
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{
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// See https://go.microsoft.com/fwlink/?LinkId=733558
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// for the documentation about the tasks.json format
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"version": "2.0.0",
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"tasks": [
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{
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"label": "debug",
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"type": "shell",
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"command": "build/build.sh",
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"problemMatcher": [],
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"group": {
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"kind": "build",
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"isDefault": true
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}
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}
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]
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}
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26
args.go
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26
args.go
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package main
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import (
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"os"
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"github.com/pborman/getopt"
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)
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var connectAddress string
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var connectPort uint16
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func parseArgs() {
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h := getopt.BoolLong("help", 'h', "display help")
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a := getopt.StringLong("address", 'a', "IC-705", "Connect to address")
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p := getopt.Uint16Long("port", 'p', 50001, "Connect to UDP port")
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getopt.Parse()
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if *h || *a == "" {
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getopt.Usage()
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os.Exit(1)
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}
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connectAddress = *a
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connectPort = *p
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}
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14
build/build.sh
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14
build/build.sh
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#!/bin/sh
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self=`readlink "$0"`
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if [ -z "$self" ]; then
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self=$0
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fi
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scriptname=`basename "$self"`
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scriptdir=${self%$scriptname}
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cd $scriptdir
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scriptdir=`pwd`
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cd ..
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go build
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7
kappanhang.code-workspace
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7
kappanhang.code-workspace
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{
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"folders": [
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{
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"path": "."
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}
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]
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}
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73
log/log.go
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73
log/log.go
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package log
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import (
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"fmt"
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"os"
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"path/filepath"
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"runtime"
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"go.uber.org/zap"
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"go.uber.org/zap/zapcore"
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)
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var logger *zap.SugaredLogger
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var filenameTrimChars int
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func getCallerFileName(withLine bool) string {
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_, filename, line, _ := runtime.Caller(2)
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extension := filepath.Ext(filename)
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if withLine {
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return fmt.Sprint(filename[filenameTrimChars:len(filename)-len(extension)], "@", line)
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} else {
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return filename[filenameTrimChars : len(filename)-len(extension)]
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}
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}
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func Printf(a string, b ...interface{}) {
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logger.Infof(getCallerFileName(false)+": "+a, b...)
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}
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func Print(a ...interface{}) {
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logger.Info(append([]interface{}{getCallerFileName(false) + ": "}, a...)...)
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}
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func Debugf(a string, b ...interface{}) {
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logger.Debugf(getCallerFileName(true)+": "+a, b...)
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}
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func Debug(a ...interface{}) {
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logger.Debug(append([]interface{}{getCallerFileName(true) + ": "}, a...)...)
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}
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func Errorf(a string, b ...interface{}) {
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logger.Errorf(getCallerFileName(true)+": "+a, b...)
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}
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func Error(a ...interface{}) {
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logger.Error(append([]interface{}{getCallerFileName(true) + ": "}, a...)...)
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}
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func Fatalf(a string, b ...interface{}) {
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logger.Fatalf(getCallerFileName(true)+": "+a, b...)
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}
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func Fatal(a ...interface{}) {
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logger.Fatal(append([]interface{}{getCallerFileName(true) + ": "}, a...)...)
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}
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func Init() {
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// Example: https://stackoverflow.com/questions/50933936/zap-logger-does-not-print-on-console-rather-print-in-the-log-file/50936341
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pe := zap.NewProductionEncoderConfig()
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pe.EncodeTime = zapcore.ISO8601TimeEncoder
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// pe.LevelKey = ""
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consoleEncoder := zapcore.NewConsoleEncoder(pe)
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level := zap.DebugLevel
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core := zapcore.NewCore(consoleEncoder, zapcore.AddSync(os.Stdout), level)
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logger = zap.New(core).Sugar()
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var callerFilename string
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_, callerFilename, _, _ = runtime.Caller(1)
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filenameTrimChars = len(filepath.Dir(callerFilename)) + 1
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}
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137
main.go
Normal file
137
main.go
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package main
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import (
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"bytes"
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"encoding/binary"
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"fmt"
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"net"
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"time"
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"github.com/nonoo/kappanhang/log"
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)
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var conn *net.UDPConn
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func send(d []byte) {
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_, err := conn.Write(d)
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if err != nil {
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log.Fatal(err)
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}
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}
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func read() ([]byte, error) {
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err := conn.SetReadDeadline(time.Now().Add(time.Second))
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if err != nil {
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log.Fatal(err)
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}
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b := make([]byte, 1500)
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n, _, err := conn.ReadFromUDP(b)
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if err != nil {
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if err, ok := err.(net.Error); ok && !err.Timeout() {
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log.Fatal(err)
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}
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}
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return b[:n], err
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}
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func main() {
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log.Init()
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parseArgs()
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hostPort := fmt.Sprint(connectAddress, ":", connectPort)
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log.Print("connecting to ", hostPort)
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raddr, err := net.ResolveUDPAddr("udp", hostPort)
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if err != nil {
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log.Fatal(err)
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}
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conn, err = net.DialUDP("udp", nil, raddr)
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if err != nil {
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log.Fatal(err)
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}
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// Constructing the local session ID by combining the local IP address and port.
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laddr := conn.LocalAddr().(*net.UDPAddr)
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localSID := binary.BigEndian.Uint32(laddr.IP[len(laddr.IP)-4:])<<16 | uint32(laddr.Port&0xffff)
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log.Debugf("using session id %.8x", localSID)
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send([]byte{0x10, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, byte(localSID >> 24), byte(localSID >> 16), byte(localSID >> 8), byte(localSID), 0x00, 0x00, 0x00, 0x00})
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// send([]byte{0x15, 0x00, 0x00, 0x00, 0x07, 0x00, 0x01, 0x00, byte(localSID >> 24), byte(localSID >> 16), byte(localSID >> 8), byte(localSID), 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x3e, 0x10, 0x00})
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// send([]byte{0x10, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, byte(localSID >> 24), byte(localSID >> 16), byte(localSID >> 8), byte(localSID), 0x00, 0x00, 0x00, 0x00})
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// send([]byte{0x15, 0x00, 0x00, 0x00, 0x07, 0x00, 0x02, 0x00, byte(localSID >> 24), byte(localSID >> 16), byte(localSID >> 8), byte(localSID), 0x00, 0x00, 0x00, 0x00, 0x00, 0x70, 0x3e, 0x10, 0x00})
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// send([]byte{0x10, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, byte(localSID >> 24), byte(localSID >> 16), byte(localSID >> 8), byte(localSID), 0x00, 0x00, 0x00, 0x00})
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var remoteSID uint32
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for {
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r, _ := read()
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if bytes.Equal(r[:8], []byte{0x10, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00}) {
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remoteSID = binary.BigEndian.Uint32(r[8:12])
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break
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}
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}
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log.Debugf("got remote session id %.8x", remoteSID)
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send([]byte{0x10, 0x00, 0x00, 0x00, 0x06, 0x00, 0x01, 0x00, byte(localSID >> 24), byte(localSID >> 16), byte(localSID >> 8), byte(localSID), byte(remoteSID >> 24), byte(remoteSID >> 16), byte(remoteSID >> 8), byte(remoteSID)})
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send([]byte{0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, byte(localSID >> 24), byte(localSID >> 16), byte(localSID >> 8), byte(localSID), byte(remoteSID >> 24), byte(remoteSID >> 16), byte(remoteSID >> 8), byte(remoteSID),
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0x00, 0x00, 0x00, 0x70, 0x01, 0x00, 0x00, 0x22,
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0x00, 0x00, 0x09, 0x27, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x3e, 0x71, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x5e, 0x3e, 0x2c, 0x54, 0x3a, 0x4f, 0x75, 0x79,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x69, 0x63, 0x6f, 0x6d, 0x2d, 0x70, 0x63, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00})
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var sendSeq uint8
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var lastReceivedSeq uint8
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var receivedSeq bool
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var lastPingAt time.Time
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var errCount int
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for {
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r, err := read()
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if err != nil {
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errCount++
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if errCount > 5 {
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log.Fatal("timeout")
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}
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log.Error("stream break detected")
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}
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errCount = 0
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if bytes.Equal(r[:6], []byte{0x00, 0x00, 0x00, 0x00, 0x07, 0x00}) {
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gotSeq := r[6]
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if receivedSeq && lastReceivedSeq+1 != gotSeq {
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log.Error("packet loss detected")
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}
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lastReceivedSeq = gotSeq
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receivedSeq = true
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}
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if time.Since(lastPingAt) >= time.Second {
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// 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0xf0, 0xa4, 0xf5, 0x9d, 0xad, 0x89, 0x2b, 0x14
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// 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x21, 0x00, 0xf0, 0xa4, 0xf5, 0x9d, 0xad, 0x89, 0x2b, 0x14
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send([]byte{0x10, 0x00, 0x00, 0x00, 0x00, 0x00, sendSeq, 0x00, byte(remoteSID >> 24), byte(remoteSID >> 16), byte(remoteSID >> 8), byte(remoteSID), byte(localSID >> 24), byte(localSID >> 16), byte(localSID >> 8), byte(localSID)})
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// 0x00, 0x00, 0x00, 0x00, 0x07, 0x00, 0x86, 0x08, 0xf0, 0xa4, 0xf5, 0x9d, 0xad, 0x89, 0x2b, 0x14, 0x00, 0x08, 0xdf, 0x10, 0x00
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// 0x00, 0x00, 0x00, 0x00, 0x07, 0x00, 0x87, 0x08, 0xf0, 0xa4, 0xf5, 0x9d, 0xad, 0x89, 0x2b, 0x14, 0x00, 0x6c, 0xdf, 0x10, 0x00
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send([]byte{0x00, 0x00, 0x00, 0x00, 0x07, 0x00, sendSeq, 0x08, byte(remoteSID >> 24), byte(remoteSID >> 16), byte(remoteSID >> 8), byte(remoteSID), byte(localSID >> 24), byte(localSID >> 16), byte(localSID >> 8), byte(localSID), 0x00, 0xd0, 0xdf, 0x10, 0x00})
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// 0x00, 0x00, 0x00, 0x00, 0x07, 0x00, 0x1c, 0x00, 0xf0, 0xa4, 0xf5, 0x9d, 0xad, 0x89, 0x2b, 0x14, 0x01, 0xb2, 0x48, 0x10, 0x00
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// 0x00, 0x00, 0x00, 0x00, 0x07, 0x00, 0x1d, 0x00, 0xf0, 0xa4, 0xf5, 0x9d, 0xad, 0x89, 0x2b, 0x14, 0x01, 0x17, 0x49, 0x10, 0x00
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// 0x00, 0x00, 0x00, 0x00, 0x07, 0x00, 0x1e, 0x00, 0xf0, 0xa4, 0xf5, 0x9d, 0xad, 0x89, 0x2b, 0x14, 0x01, 0x7c, 0x49, 0x10, 0x00
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send([]byte{0x00, 0x00, 0x00, 0x00, 0x07, 0x00, sendSeq, 0x00, byte(remoteSID >> 24), byte(remoteSID >> 16), byte(remoteSID >> 8), byte(remoteSID), byte(localSID >> 24), byte(localSID >> 16), byte(localSID >> 8), byte(localSID), 0x01, 0xe1, 0x49, 0x10, 0x00})
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sendSeq++
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//send([]byte{0x10, 0x00, 0x00, 0x00, 0x06, 0x00, 0x01, 0x00, byte(localSID >> 24), byte(localSID >> 16), byte(localSID >> 8), byte(localSID), byte(remoteSID >> 24), byte(remoteSID >> 16), byte(remoteSID >> 8), byte(remoteSID)})
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lastPingAt = time.Now()
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}
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}
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}
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