Stubbed out really basic proxy middleware

middleware/middleware.go

@@ -17,6 +17,7 @@ func init() {
 	register("rewrite", Rewrite)
 	register("redir", Redirect)
 	register("ext", Extensionless)
+	register("proxy", Proxy)
 	register("fastcgi", FastCGI)
 }
 

middleware/proxy.go

@@ -0,0 +1,50 @@
+package middleware
+
+import (
+	"log"
+	"net/http"
+	"strings"
+)
+
+// Proxy is middleware that proxies requests.
+func Proxy(p parser) Middleware {
+	var rules []proxyRule
+
+	for p.Next() {
+		rule := proxyRule{}
+
+		if !p.Args(&rule.from, &rule.to) {
+			return p.ArgErr()
+		}
+
+		rules = append(rules, rule)
+	}
+
+	return func(next http.HandlerFunc) http.HandlerFunc {
+		return func(w http.ResponseWriter, r *http.Request) {
+
+			for _, rule := range rules {
+				if Path(r.URL.Path).Matches(rule.from) {
+					client := &http.Client{}
+
+					r.RequestURI = ""
+					r.URL.Scheme = strings.ToLower(r.URL.Scheme)
+
+					resp, err := client.Do(r)
+					if err != nil {
+						log.Fatal(err)
+					}
+					resp.Write(w)
+
+				} else {
+					next(w, r)
+				}
+			}
+		}
+	}
+}
+
+type proxyRule struct {
+	from string
+	to   string
+}