A Go package to log network connection events by wrapping net.Listener and net.Conn.
go get -u github.com/WangYihang/net-conn-loggerLet's create a simple HTTP server that logs all connection events (Accept, Read, Write and Close).
package main
import (
"encoding/json"
"fmt"
"net/http"
"github.com/WangYihang/go-net-conn-logger/pkg/listener"
)
func main() {
// Create a new listener
l, err := listener.NewListener(":8080")
if err != nil {
panic(err)
}
// Start the log consumer
go func() {
for logEntry := range l.LogChan() {
data, _ := json.Marshal(logEntry)
fmt.Println(string(data))
}
}()
// Start server with the listener
http.Serve(l, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Write([]byte("Hello, World!"))
}))
}$ go run main.go$ curl http://localhost:8080/ -4 -H 'Host: www.example.com' --data 'a=1&b=2'
Hello, World!{
"timestamp": 1713267806921,
"events": [
{
"timestamp": 1713267806921,
"type": "accept",
"payload": "",
"error": ""
},
{
"timestamp": 1713267806921,
"type": "read",
"payload": "GET / HTTP/1.1\r\nHost: localhost:8080\r\nUser-Agent: curl/8.2.1\r\nAccept: */*\r\n\r\n",
"error": ""
},
{
"timestamp": 1713267806921,
"type": "write",
"payload": "HTTP/1.1 200 OK\r\nDate: Tue, 16 Apr 2024 11:43:26 GMT\r\nContent-Length: 13\r\nContent-Type: text/plain; charset=utf-8\r\n\r\nHello, World!",
"error": ""
},
{
"timestamp": 1713267806921,
"type": "read",
"payload": "",
"error": "read tcp 127.0.0.1:8080-\u003e127.0.0.1:48884: i/o timeout"
},
{
"timestamp": 1713267806921,
"type": "read",
"payload": "",
"error": "EOF"
},
{
"timestamp": 1713267806921,
"type": "close",
"payload": "",
"error": ""
}
],
"bytes_written": "HTTP/1.1 200 OK\r\nDate: Tue, 16 Apr 2024 11:43:26 GMT\r\nContent-Length: 13\r\nContent-Type: text/plain; charset=utf-8\r\n\r\nHello, World!",
"bytes_read": "GET / HTTP/1.1\r\nHost: localhost:8080\r\nUser-Agent: curl/8.2.1\r\nAccept: */*\r\n\r\n",
"local_addr": "127.0.0.1:8080",
"remote_addr": "127.0.0.1:48884"
}