Redirect handling and GenericUrl not woriking well together (resulting in 404) when redirected to any URL with a path containing the '+' character

[VICO-Research]

When handling redirects for GET requests, the next request is made with an GenericUrl instance constructed from the value of the Location header like this: new GenericUrl(url.toURL(redirectLocation)). If redirectLocation contains a '+' character in the path it effectively gets converted to a space and encoded as %20 which breaks the URL. This is a rather big issue trying to work Google+. In my opinion the root of the problem is the toPathParts method in GenericUrl which uses CharEscapers.decodeUri on each part despite of its documentation which states it should not be used on path because it replaces '+' with ' '.

[dpapworth]

+1 this issue. @VICO-Research 's suggestion will cause '+' to be encoded as %2B, as the path encoding in appendRawPathFromParts is also incorrect. The CharEscapers.escapeUriPath method doesn't recognise '+' as a subdelimiter character (see https://tools.ietf.org/html/rfc3986).

[ajaaym]

We are tracking this issue here closing this.