Accepting Any SSL Certificate Causes My Program to Hang - http

Question

I have the following dart program:
import "dart:io";
import "dart:convert" show UTF8;
void main() {
HttpClient client = new HttpClient();
client.badCertificateCallback = (certificate, host, callbackPort) {
print("In bad certificate callback.");
return true;
};
client.getUrl(Uri.parse("https://www.self.signed.url.com/api")).then((HttpClientRequest request) {
print("In request callback.");
return request.close();
}).then((HttpClientResponse resp) {
print("In responce callback.");
});
}
This code makes a get request to a url. The url uses a self signed certificate, which results in an SSL error. To get around this I have set the badCertificateCallback of HttpClient to always return true, effectively accepting all certificates.
With this code I would expect to see following output:
In request callback.
In bad certificate callback.
In responce callback.
And then have the program exit. Instead I see:
In bad certificate callback.
In request callback.
And the program hangs. Any ideas on what I am doing wrong?
UPDATE: I have submitted a Dart bug as advised by some of the comments. It can be found here. If anything comes of that I'll put the results back into this.

Answer 1

It turns out that it has nothing with HTTPS to do, but with the handling of the HTTP protocol on the https://checkmate.fogbugz.com/api.xml server. The Dart HTTP stack send all headers field names in lower case. This is not handled correctly by the server.
The following code illustrates this:
import 'dart:io';
import 'dart:convert';
void main() {
SecureSocket.connect("checkmate.fogbugz.com", 443).then((socket) {
socket.write("GET /api.xml HTTP/1.0\r\n"
"host: checkmate.fogbugz.com\r\n"
"\r\n");
socket.listen((data) => print(UTF8.decode(data)));
});
}
No response is ever received. If host: is changed to Host: the response is received.
RFC 2616 section 4.2 states: 'Field names are case-insensitive.'