headers missing on firefox

[andrewrk]

This causes resp.body to be null for json responses which is pretty catastrophic.

I've tried every version down to 0.9.8 and they all have the same issue. 0.9.8 actually throws an error instead of having a response which is incorrect because the status is 200 and the text is valid json.

[andrewrk]

Related to this maybe? https://bugzilla.mozilla.org/show_bug.cgi?id=608735

[andrewrk]

xhr.getAllResponseHeaders() is returning "" but xhr.getResponseHeader("Content-Type") returns application/json.

[alinz]

OK, it seems this bug returns when I use it with react-native 0.6 and above. What I found that xhr.getResponseHeader('content-type') starts to return null which isn't right.

Calling to this.xhr.getAllResponseHeaders() returns the correct sets of headers which also includes content-type.

So here's my humble solution:

var tryAnotherContentType = this.xhr.getResponseHeader('content-type');
if (tryAnotherContentType && tryAnotherContentType.length > 0) {
    this.header['content-type'] = tryAnotherContentType;
}