HTTPS url with port number not working on iOS

Question

I'm sending a simple GET request on an HTTPS url containing a port number. The url looks like this

https://example.com:8080/v1/base

This works perfectly on Android and on any browser..heck even curl. But, I get this error on iOS. If I remove the port number from the above URL, this works perfectly fine!

Error:Error Domain=NSURLErrorDomain Code=-1202 "The certificate for this server is invalid. You might be connecting to a server that is pretending to be “example.com” which could put your confidential information at risk." UserInfo=0xa694c50 {NSErrorFailingURLStringKey= https://example.com:8080/v1/base , NSLocalizedRecoverySuggestion=Would you like to connect to the server anyway?, NSErrorFailingURLKey= https://example.com:8080/api/v1/base , NSLocalizedDescription=The certificate for this server is invalid. You might be connecting to a server that is pretending to be “example.com” which could put your confidential information at risk., NSUnderlyingError=0xa2410a0 "The certificate for this server is invalid. You might be connecting to a server that is pretending to be “example.com” which could put your confidential information at risk.", NSURLErrorFailingURLPeerTrustErrorKey=}

The SSL certificate was issued by DigiCert. The server backend is node v0.10.15 and iOS SDK v6.1

Any idea what I'm missing here?

Answer 1

Adding requestCert: true & the CA certificate solved this

var https = require('https'),      // module for https
fs =    require('fs');         // required to read certs and keys

var options = {
    key:    fs.readFileSync('ssl/server.key'),
    cert:   fs.readFileSync('ssl/server.crt'),
    ca:     fs.readFileSync('ssl/ca.crt'),
    requestCert:        true,
    rejectUnauthorized: false
};

https.createServer(options, function (req, res) {
    if (req.client.authorized) {
        res.writeHead(200, {"Content-Type": "application/json"});
        res.end('{"status":"approved"}');
    } else {
        res.writeHead(401, {"Content-Type": "application/json"});
        res.end('{"status":"denied"}');
    }
}).listen(443);

Answer 2

Are you including any additional parent CA certs beyond your own?

Also, does it work if you use a port other than 8080 or 443? And does it work if you listen on 443 and explicitly attempt to request https://example.com:443/v1/base ?

var fs = require('fs');
var httpsOpt = {
  key  : fs.readFileSync('ssl.plain.key').toString(),
  cert : fs.readFileSync('ssl.crt').toString(),
  ca:[fs.readFileSync('ca.pem').toString(),
      fs.readFileSync('sub.class1.server.ca.pem').toString()],
};
https.createServer(httpsOpt, app)
  .listen('8080', function(){
    console.log('Listening on 8080')
  });