request: respect HTTP proxy environment variables and drop support fo…

…r setting proxy by options

README.md

@@ -318,23 +318,17 @@ $ annie -c cookies.txt https://www.bilibili.com/video/av20203945
 ```
 
 ### Proxy
-#### HTTP proxy
 
-An HTTP proxy can be specified with the `-x` option:
+You can set the HTTP/SOCKS5 proxy using environment variables:
 
 ```console
-$ annie -x http://127.0.0.1:7777 -i https://www.youtube.com/watch?v=Gnbch2osEeo
+$ HTTP_PROXY="http://127.0.0.1:1087/" annie -i https://www.youtube.com/watch?v=Gnbch2osEeo
 ```
 
-#### SOCKS5 proxy
-
-A SOCKS5 proxy can be specified with the `-s` option:
-
 ```console
-$ annie -s 127.0.0.1:1080 -i https://www.youtube.com/watch?v=Gnbch2osEeo
+$ HTTP_PROXY="socks5://127.0.0.1:1080/" annie -i https://www.youtube.com/watch?v=Gnbch2osEeo
 ```
 
-
 ### Multi-Thread
 
 Use `-n` option to set the number of download threads(default is 10, only works for multiple-parts video).
@@ -519,10 +513,6 @@ $ annie -j https://www.bilibili.com/video/av20203945
 #### Network:
 
 ```
-  -s string
-    	SOCKS5 proxy
-  -x string
-    	HTTP proxy
   -retry int
     	How many times to retry when the download failed (default 10)
 ```

config/config.go

@@ -13,10 +13,6 @@ var (
 	Playlist bool
 	// Refer use specified Referrer
 	Refer string
-	// Proxy HTTP proxy
-	Proxy string
-	// Socks5Proxy SOCKS5 proxy
-	Socks5Proxy string
 	// Stream select specified stream to download
 	Stream string
 	// OutputPath output file path

main.go

@@ -49,8 +49,6 @@ func init() {
 	flag.StringVar(&config.Cookie, "c", "", "Cookie")
 	flag.BoolVar(&config.Playlist, "p", false, "Download playlist")
 	flag.StringVar(&config.Refer, "r", "", "Use specified Referrer")
-	flag.StringVar(&config.Proxy, "x", "", "HTTP proxy")
-	flag.StringVar(&config.Socks5Proxy, "s", "", "SOCKS5 proxy")
 	flag.StringVar(&config.Stream, "f", "", "Select specific stream to download")
 	flag.StringVar(&config.OutputPath, "o", "", "Specify the output path")
 	flag.StringVar(&config.OutputName, "O", "", "Specify the output file name")

request/request.go

@@ -8,17 +8,14 @@ import (
 	"fmt"
 	"io"
 	"io/ioutil"
-	"net"
 	"net/http"
-	netURL "net/url"
 	"strconv"
 	"strings"
 	"time"
 
 	cookiemonster "github.com/MercuryEngineering/CookieMonster"
 	"github.com/fatih/color"
 	"github.com/kr/pretty"
-	"golang.org/x/net/proxy"
 
 	"github.com/iawia002/annie/config"
 )
@@ -28,32 +25,11 @@ func Request(
 	method, url string, body io.Reader, headers map[string]string,
 ) (*http.Response, error) {
 	transport := &http.Transport{
+		Proxy:               http.ProxyFromEnvironment,
 		DisableCompression:  true,
 		TLSHandshakeTimeout: 10 * time.Second,
 		TLSClientConfig:     &tls.Config{InsecureSkipVerify: true},
 	}
-	if config.Proxy != "" {
-		var httpProxy, err = netURL.Parse(config.Proxy)
-		if err != nil {
-			return nil, err
-		}
-		transport.Proxy = http.ProxyURL(httpProxy)
-	}
-	if config.Socks5Proxy != "" {
-		dialer, err := proxy.SOCKS5(
-			"tcp",
-			config.Socks5Proxy,
-			nil,
-			&net.Dialer{
-				Timeout:   30 * time.Second,
-				KeepAlive: 30 * time.Second,
-			},
-		)
-		if err != nil {
-			return nil, err
-		}
-		transport.Dial = dialer.Dial
-	}
 	client := &http.Client{
 		Transport: transport,
 		Timeout:   15 * time.Minute,