First working version

http.go

@@ -0,0 +1,21 @@
+package main
+
+import (
+	"net/http"
+	"strconv"
+)
+
+const (
+	HttpOK = "HTTP/1.1 200 OK\r\n"
+	MethodRDGIN  = "RDG_IN_DATA"
+	MethodRDGOUT = "RDG_OUT_DATA"
+)
+
+// httpError is like the http.Error with WebSocket context exception.
+func httpError(w http.ResponseWriter, body string, code int) {
+	w.Header().Set("Content-Type", "text/plain; charset=utf-8")
+	w.Header().Set("Content-Length", strconv.Itoa(len(body)))
+	w.WriteHeader(code)
+	w.Write([]byte(body))
+}
+