Add Proxy support

Godeps/Godeps.json

@@ -22,7 +22,7 @@
 		},
 		{
 			"ImportPath": "github.com/gorilla/websocket",
-			"Rev": "b6ab76f1fe9803ee1d59e7e5b2a797c1fe897ce5"
+			"Rev": "5c91b59efa232fa9a87b705d54101832c498a172"
 		},
 		{
 			"ImportPath": "github.com/jtolds/gls",

cmd/gotty-client/main.go

@@ -25,7 +25,7 @@ func main() {
 	app.ArgsUsage = "GOTTY_URL"
 	app.BashComplete = func(c *cli.Context) {
 		for _, command := range []string{
-			"--debug", "--skip-tls-verify", "--help",
+			"--debug", "--skip-tls-verify", "--use-proxy-from-env", "--help",
 			"--generate-bash-completion", "--version",
 			"http://user:pass@host:1234/path/\\\\?arg=abcdef\\\\&arg=ghijkl",
 			"https://user:pass@host:1234/path/\\\\?arg=abcdef\\\\&arg=ghijkl",
@@ -46,6 +46,11 @@ func main() {
 			Usage:  "Skip TLS verify",
 			EnvVar: "SKIP_TLS_VERIFY",
 		},
+		cli.BoolFlag{
+			Name:   "use-proxy-from-env",
+			Usage:  "Use Proxy from environment",
+			EnvVar: "USE_PROXY_FROM_ENV",
+		},
 	}
 
 	app.Action = Action
@@ -77,6 +82,10 @@ func Action(c *cli.Context) {
 		client.SkipTLSVerify = true
 	}
 
+	if c.Bool("use-proxy-from-env") {
+		client.UseProxyFromEnv = true
+	}
+
 	// loop
 	if err = client.Loop(); err != nil {
 		logrus.Fatalf("Communication error: %v", err)

gotty-client.go

@@ -81,6 +81,7 @@ type Client struct {
 	QuitChan        chan struct{}
 	QuitChanClosed  bool
 	SkipTLSVerify   bool
+	UseProxyFromEnv bool
 	Connected       bool
 }
 
@@ -105,12 +106,15 @@ func (c *Client) GetAuthToken() (string, error) {
 	logrus.Debugf("Fetching auth token auth-token: %q", target.String())
 	req, err := http.NewRequest("GET", target.String(), nil)
 	req.Header = *header
-	client := http.Client{}
+	tr := &http.Transport{}
 	if c.SkipTLSVerify {
-		client.Transport = &http.Transport{
-			TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
+		conf := &tls.Config{InsecureSkipVerify: true}
+		tr.TLSClientConfig = conf
 	}
+	if c.UseProxyFromEnv {
+		tr.Proxy = http.ProxyFromEnvironment
 	}
+	client := &http.Client{Transport: tr}
 	resp, err := client.Do(req)
 	if err != nil {
 		return "", err
@@ -156,6 +160,9 @@ func (c *Client) Connect() error {
 	if c.SkipTLSVerify {
 		c.Dialer.TLSClientConfig = &tls.Config{InsecureSkipVerify: true}
 	}
+	if c.UseProxyFromEnv {
+		c.Dialer.Proxy = http.ProxyFromEnvironment
+	}
 	conn, _, err := c.Dialer.Dial(target.String(), *header)
 	if err != nil {
 		return err