TCP ¶

• Go snippet for making a tcp connection with source port

 1package main
 2
 3import (
 4        "bufio"
 5        "fmt"
 6        "log"
 7        "net"
 8)
 9
10func main() {
11        server, _ := net.ResolveTCPAddr("tcp", "google.com:80")
12        client, _ := net.ResolveTCPAddr("tcp", ":50000")
13        conn, err := net.DialTCP("tcp", client, server)
14        if err != nil {
15                log.Fatalf("%s", err)
16        }
17        defer conn.Close()
18        fmt.Println(conn.LocalAddr())
19        fmt.Println(conn.RemoteAddr())
20        fmt.Fprintf(conn, "GET / HTTP/1.0\r\n\r\n")
21        status, err := bufio.NewReader(conn).ReadString('\n')
22        fmt.Println(status)
23}