5 // Copyright 2013 Ernest Micklei. All rights reserved.
6 // Use of this source code is governed by a license
7 // that can be found in the LICENSE file.
9 // OPTIONSFilter is a filter function that inspects the Http Request for the OPTIONS method
10 // and provides the response with a set of allowed methods for the request URL Path.
11 // As for any filter, you can also install it for a particular WebService within a Container.
12 // Note: this filter is not needed when using CrossOriginResourceSharing (for CORS).
13 func (c *Container) OPTIONSFilter(req *Request, resp *Response, chain *FilterChain) {
14 if "OPTIONS" != req.Request.Method {
15 chain.ProcessFilter(req, resp)
19 archs := req.Request.Header.Get(HEADER_AccessControlRequestHeaders)
20 methods := strings.Join(c.computeAllowedMethods(req), ",")
21 origin := req.Request.Header.Get(HEADER_Origin)
23 resp.AddHeader(HEADER_Allow, methods)
24 resp.AddHeader(HEADER_AccessControlAllowOrigin, origin)
25 resp.AddHeader(HEADER_AccessControlAllowHeaders, archs)
26 resp.AddHeader(HEADER_AccessControlAllowMethods, methods)
29 // OPTIONSFilter is a filter function that inspects the Http Request for the OPTIONS method
30 // and provides the response with a set of allowed methods for the request URL Path.
31 // Note: this filter is not needed when using CrossOriginResourceSharing (for CORS).
32 func OPTIONSFilter() FilterFunction {
33 return DefaultContainer.OPTIONSFilter