Better caldav support (#73)

vendor/github.com/samedi/caldav-go/handlers/options.go

@@ -0,0 +1,23 @@
+package handlers
+
+import (
+	"net/http"
+)
+
+type optionsHandler struct {
+	response *Response
+}
+
+// Returns the allowed methods and the DAV features implemented by the current server.
+// For more information about the values and format read RFC4918 Sections 10.1 and 18.
+func (oh optionsHandler) Handle() *Response {
+	// Set the DAV compliance header:
+	// 1: Server supports all the requirements specified in RFC2518
+	// 3: Server supports all the revisions specified in RFC4918
+	// calendar-access: Server supports all the extensions specified in RFC4791
+	oh.response.SetHeader("DAV", "1, 3, calendar-access").
+		SetHeader("Allow", "GET, HEAD, PUT, DELETE, OPTIONS, PROPFIND, REPORT").
+		Set(http.StatusOK, "")
+
+	return oh.response
+}