From 4e4e5fca541ae2c2c0bf5cde0b556fedfafa8d54 Mon Sep 17 00:00:00 2001
From: Micah Zoltu <micah@zoltu.net>
Date: Wed, 15 Mar 2017 20:34:08 -0700
Subject: [PATCH] rpc: add support for extended headers in CORS requests
 (#3783)

Fixes #3762.  Details about parameter:
https://github.com/rs/cors/blob/a62a804a8a009876ca59105f7899938a1349f4b3/cors.go#L50-L54
---
 rpc/http.go              | 1 +
 swarm/api/http/server.go | 1 +
 2 files changed, 2 insertions(+)

diff --git a/rpc/http.go b/rpc/http.go
index 7d4fe5d474..5a07702316 100644
--- a/rpc/http.go
+++ b/rpc/http.go
@@ -171,6 +171,7 @@ func newCorsHandler(srv *Server, corsString string) http.Handler {
 		AllowedOrigins: allowedOrigins,
 		AllowedMethods: []string{"POST", "GET"},
 		MaxAge:         600,
+		AllowedHeaders: []string{"*"},
 	})
 	return c.Handler(srv)
 }
diff --git a/swarm/api/http/server.go b/swarm/api/http/server.go
index a616966780..ae113750ff 100644
--- a/swarm/api/http/server.go
+++ b/swarm/api/http/server.go
@@ -82,6 +82,7 @@ func StartHttpServer(api *api.Api, server *Server) {
 		AllowedOrigins: allowedOrigins,
 		AllowedMethods: []string{"POST", "GET", "DELETE", "PATCH", "PUT"},
 		MaxAge:         600,
+		AllowedHeaders: []string{"*"},
 	})
 	hdlr := c.Handler(serveMux)