Support sending HTTP request through unix socket

[LinuxSuRen]

Some services provide the HTTP through unix socket. For instance:

• Podman

Below is a sample code:

package main

import (
	"bufio"
	"fmt"
	"io"
	"net"
)

func main() {
	conn, err := net.Dial("unix", "/run/podman/podman.sock")
	if err != nil {
		panic(err)
	}

	fmt.Fprintf(conn, "GET /v4.0.0/libpod/secrets/name/json?showsecret=true HTTP/1.0\r\n\r\n")
	reader := bufio.NewReader(conn)

	var status string
	if status, err = reader.ReadString('\n'); err == nil {
		fmt.Println(status)
	} else {
		fmt.Println(err)
	}

	var header string
	if header, err = reader.ReadString('\n'); err == nil {
		fmt.Println(header)
	} else {
		fmt.Println(err)
	}

	var body []byte
	if body, err = io.ReadAll(reader); err == nil {
		fmt.Println(string(body))
	} else {
		fmt.Println(err)
	}
}

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[github-actions[bot]]

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