123 lines
3.0 KiB
Go
123 lines
3.0 KiB
Go
package main
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import (
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"fmt"
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"gitea.suyono.dev/suyono/netbounce/cmd/slicewriter"
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"github.com/rs/zerolog"
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"github.com/rs/zerolog/log"
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"github.com/spf13/pflag"
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"github.com/spf13/viper"
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"net"
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"time"
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)
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/*
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Copyright 2025 Suyono <suyono3484@gmail.com>
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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func main() {
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parseFlags()
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log.Debug().Msgf("Sending messages to %s server: %s", viper.GetString("protocol"), viper.GetString("server"))
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sendMessages()
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}
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func sendMessages() {
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switch viper.GetString("protocol") {
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case "udp":
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sendUDP()
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case "tcp":
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sendTCP()
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default:
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log.Fatal().Str("protocol", viper.GetString("protocol")).Msg("Unknown protocol")
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}
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}
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func sendTCP() {
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var (
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conn net.Conn
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err error
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buf, b []byte
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)
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if conn, err = net.Dial("tcp", viper.GetString("server")); err != nil {
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log.Fatal().Err(err).Msg("Failed to connect to server")
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}
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defer func() {
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_ = conn.Close()
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}()
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buf = make([]byte, 4096)
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for {
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sb := slicewriter.NewSliceWriter(buf)
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if _, err = fmt.Fprintf(sb, "client %s | %v | %s", viper.GetString("name"), time.Now(), viper.GetString("message")); err != nil {
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log.Error().Err(err).Msg("Failed to build client message")
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return
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}
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b = sb.Bytes()
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if _, err = conn.Write(b); err != nil {
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log.Error().Err(err).Msg("Failed to send client message")
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time.Sleep(viper.GetDuration("sleep"))
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continue
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}
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//TODO: read the server reply
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}
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}
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func sendUDP() {
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//TODO: implement this part
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}
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func parseFlags() {
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pflag.String("name", "", "client name")
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pflag.IntP("number", "n", 5, "number of messages to send; default 5; set to 0 for infinite")
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pflag.DurationP("sleep", "s", 10*time.Millisecond, "sleep time between requests; default 10ms")
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pflag.StringP("message", "m", "message from client", "message to send")
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pflag.Bool("debug", false, "run in debug mode")
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pflag.String("tcp", "", "tcp server address")
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pflag.String("udp", "", "udp server address")
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pflag.Parse()
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_ = viper.BindPFlags(pflag.CommandLine)
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if !viper.IsSet("name") {
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log.Fatal().Msg("server name is required")
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}
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if viper.IsSet("tcp") && viper.IsSet("udp") {
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log.Fatal().Msg("cannot use tcp and udp at once")
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}
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if !viper.IsSet("tcp") && !viper.IsSet("udp") {
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log.Fatal().Msg("server address is required")
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}
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if viper.IsSet("tcp") {
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viper.Set("protocol", "tcp")
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viper.Set("server", viper.GetString("tcp"))
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}
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if viper.IsSet("udp") {
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viper.Set("protocol", "udp")
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viper.Set("server", viper.GetString("udp"))
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}
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zerolog.SetGlobalLevel(zerolog.InfoLevel)
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if viper.GetBool("debug") {
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zerolog.SetGlobalLevel(zerolog.DebugLevel)
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}
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}
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