Adding a unixproxy mechanism

cli.go

@@ -43,26 +43,35 @@ func New(opts map[string]interface{}) *Cli {
 	endpoint, _ := opts["endpoint"].(string)
 	url, _ := url.Parse(strings.TrimRight(endpoint, "/"))
 
-	transport := &http.Transport{
-		TLSClientConfig: &tls.Config{},
-	}
-
 	if project, ok := opts["project"].(string); ok {
 		opts["project"] = strings.ToUpper(project)
 	}
 
-	if insecureSkipVerify, ok := opts["insecure"].(bool); ok {
-		transport.TLSClientConfig.InsecureSkipVerify = insecureSkipVerify
+	var ua *http.Client
+	if unixProxyPath, ok := opts["unixproxy"].(string); ok {
+		ua = &http.Client{
+			Jar:       cookieJar,
+			Transport: UnixProxy(unixProxyPath),
+		}
+	} else {
+		transport := &http.Transport{
+			TLSClientConfig: &tls.Config{},
+		}
+		if insecureSkipVerify, ok := opts["insecure"].(bool); ok {
+			transport.TLSClientConfig.InsecureSkipVerify = insecureSkipVerify
+		}
+
+		ua = &http.Client{
+			Jar:       cookieJar,
+			Transport: transport,
+		}
 	}
 
 	cli := &Cli{
 		endpoint:   url,
 		opts:       opts,
 		cookieFile: filepath.Join(homedir, ".jira.d", "cookies.js"),
-		ua: &http.Client{
-			Jar:       cookieJar,
-			Transport: transport,
-		},
+		ua:         ua,
 	}
 
 	cli.ua.Jar.SetCookies(url, cli.loadCookies())

unixproxy.go

@@ -0,0 +1,41 @@
+package jira
+
+import (
+	"fmt"
+	"net"
+	"net/http"
+	"os"
+	"time"
+)
+
+type Transport struct {
+	shadow http.Transport
+}
+
+func NewUnixProxyTransport(path string) *Transport {
+	dial := func(network, addr string) (net.Conn, error) {
+		return net.Dial("unix", path)
+	}
+
+	shadow := http.Transport{
+		Dial:                  dial,
+		DialTLS:               dial,
+		DisableKeepAlives:     true,
+		ResponseHeaderTimeout: 30 * time.Second,
+		ExpectContinueTimeout: 10 * time.Second,
+	}
+
+	return &Transport{shadow}
+}
+
+func UnixProxy(path string) *Transport {
+	return NewUnixProxyTransport(os.ExpandEnv(path))
+}
+
+func (t *Transport) RoundTrip(req *http.Request) (*http.Response, error) {
+	req2 := *req
+	url2 := *req.URL
+	req2.URL = &url2
+	req2.URL.Opaque = fmt.Sprintf("//%s%s", req.URL.Host, req.URL.EscapedPath())
+	return t.shadow.RoundTrip(&req2)
+}