Golang: Connect with specific source port

connect_with_specific_source_port.go

package main

import (
        "bufio"
        "fmt"
        "log"
        "net"
)

func main() {
        server, _ := net.ResolveTCPAddr("tcp", "google.com:80")
        client, _ := net.ResolveTCPAddr("tcp", ":50000")
        conn, err := net.DialTCP("tcp", client, server)
        if err != nil {
                log.Fatalf("%s", err)
        }
        defer conn.Close()
        fmt.Println(conn.LocalAddr())
        fmt.Println(conn.RemoteAddr())
        fmt.Fprintf(conn, "GET / HTTP/1.0\r\n\r\n")
        status, err := bufio.NewReader(conn).ReadString('\n')
        fmt.Println(status)
}