Add proxy to faasd up

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>

pkg/proxy.go

@@ -0,0 +1,33 @@
+package pkg
+
+import (
+	"fmt"
+	"net/http"
+
+	"time"
+)
+
+func NewProxy(hosts string, timeout time.Duration) *Proxy {
+
+	return &Proxy{
+		Hosts:   hosts,
+		Timeout: timeout,
+	}
+}
+
+type Proxy struct {
+	Hosts   string
+	Timeout time.Duration
+}
+
+func (p *Proxy) Start() error {
+	tcp := 8080
+	s := &http.Server{
+		Addr:           fmt.Sprintf(":%d", tcp),
+		ReadTimeout:    p.Timeout,
+		WriteTimeout:   p.Timeout,
+		MaxHeaderBytes: 1 << 20, // Max header of 1MB
+	}
+
+	return s.ListenAndServe()
+}