add support for using socks proxy

jiracli/cli.go

@@ -35,6 +35,7 @@ type GlobalOptions struct {
 	PasswordSource figtree.StringOption `yaml:"password-source,omitempty" json:"password-source,omitempty"`
 	Quiet          figtree.BoolOption   `yaml:"quiet,omitempty" json:"quiet,omitempty"`
 	UnixProxy      figtree.StringOption `yaml:"unixproxy,omitempty" json:"unixproxy,omitempty"`
+	SocksProxy     figtree.StringOption `yaml:"socksproxy,omitempty" json:"socksproxy,omitempty"`
 	User           figtree.StringOption `yaml:"user,omitempty" json:"user,omitempty"`
 }
 
@@ -73,6 +74,7 @@ func Register(app *kingpin.Application, o *oreo.Client, fig *figtree.FigTree, re
 	app.Flag("insecure", "Disable TLS certificate verification").Short('k').SetValue(&globals.Insecure)
 	app.Flag("quiet", "Suppress output to console").Short('Q').SetValue(&globals.Quiet)
 	app.Flag("unixproxy", "Path for a unix-socket proxy").SetValue(&globals.UnixProxy)
+	app.Flag("socksproxy", "Address for a socks proxy").SetValue(&globals.SocksProxy)
 	app.Flag("user", "Login name used for authentication with Jira service").Short('u').SetValue(&globals.User)
 
 	app.PreAction(func(_ *kingpin.ParseContext) error {
@@ -87,6 +89,8 @@ func Register(app *kingpin.Application, o *oreo.Client, fig *figtree.FigTree, re
 		}
 		if globals.UnixProxy.Value != "" {
 			o = o.WithTransport(unixProxy(globals.UnixProxy.Value))
+		} else if globals.SocksProxy.Value != "" {
+			o = o.WithTransport(socksProxy(globals.SocksProxy.Value))
 		}
 		return nil
 	})

jiracli/socksproxy.go

@@ -0,0 +1,31 @@
+package jiracli
+
+import (
+	"net"
+	"net/http"
+	"time"
+
+	"golang.org/x/net/proxy"
+)
+
+func socksProxy(address string) *http.Transport {
+	return newSocksProxyTransport(address)
+}
+
+func newSocksProxyTransport(address string) *http.Transport {
+	dialer, err := proxy.SOCKS5("tcp", address, nil, proxy.Direct)
+	if err != nil {
+		// TODO: whoops, return error?
+		panic(err)
+	}
+	dial := func(network, addr string) (net.Conn, error) {
+		return dialer.Dial(network, addr)
+	}
+
+	return &http.Transport{
+		Dial:                  dial,
+		DisableKeepAlives:     true,
+		ResponseHeaderTimeout: 30 * time.Second,
+		ExpectContinueTimeout: 10 * time.Second,
+	}
+}