`examples/v2/*.js ...` fail against an *http* registry

[trentm]

If I'm testing against a local dev/test Docker registry over http (e.g. see http://trentm.com/2016/04/docker4mac-v2-registry.html), the example scripts fail:

$ node listTags.js http://docker.here/alpine
listTags: error: connect ECONNREFUSED

The issue is that in the ping and login calls made, the "http" is lost on the index URL and it fails while attempting to using https.

[trentm]

Fixed in commit 3580a81

[trentm]

@twhiteman Note: that http thing should finally be fixed now.

[mingfang]

I still can't use this against my private repository over http

node examples/v2/listTags.js http://tristar:5000/base -v -k
{"name":"listTags","hostname":"minux","pid":22421,"level":10,"url":"http://tristar:5000","msg":"RegistryClientV2 url","time":"2016-05-20T02:32:03.431Z","v":0}
{"name":"listTags","hostname":"minux","pid":22421,"level":10,"index":{"scheme":"http","name":"tristar:5000","official":false},"password":"(none)","scope":"repository:base:pull","msg":"login","time":"2016-05-20T02:32:03.433Z","v":0}
{"name":"listTags","hostname":"minux","pid":22421,"level":10,"index":{"scheme":"http","name":"tristar:5000","official":false},"password":"(none)","scope":"repository:base:pull","msg":"ping","time":"2016-05-20T02:32:03.433Z","v":0}
{"name":"listTags","hostname":"minux","pid":22421,"level":10,"client_req":{"method":"GET","url":"/v2/","address":"tristar","port":"5000","headers":{"accept":"application/json","user-agent":"node-docker-registry-client/3.1.6 (x64-linux; node/5.11.1)","date":"Fri, 20 May 2016 02:32:03 GMT"}},"msg":"request sent","time":"2016-05-20T02:32:03.440Z","v":0}
{"name":"listTags","hostname":"minux","pid":22421,"level":10,"client_res":{"statusCode":200,"headers":{"content-length":"2","content-type":"application/json; charset=utf-8","docker-distribution-api-version":"registry/2.0","x-content-type-options":"nosniff","date":"Fri, 20 May 2016 02:31:49 GMT","connection":"close"}},"msg":"Response received","time":"2016-05-20T02:32:03.472Z","v":0}
{"name":"listTags","hostname":"minux","pid":22421,"level":10,"body":"{}","len":2,"msg":"body received","time":"2016-05-20T02:32:03.473Z","v":0}
{"name":"listTags","hostname":"minux","pid":22421,"level":10,"msg":"ending 1 sockets","time":"2016-05-20T02:32:03.474Z","v":0}
{"name":"listTags","hostname":"minux","pid":22421,"level":10,"err":null,"success":true,"msg":"login: done","time":"2016-05-20T02:32:03.474Z","v":0}
{"name":"listTags","hostname":"minux","pid":22421,"level":10,"err":null,"loggedIn":true,"msg":"login: done","time":"2016-05-20T02:32:03.474Z","v":0}
_http_outgoing.js:344
    throw new Error('`value` required in setHeader("' + name + '", value).');
    ^

Error: `value` required in setHeader("authorization", value).
    at ClientRequest.OutgoingMessage.setHeader (_http_outgoing.js:344:11)
    at new ClientRequest (_http_client.js:85:14)
    at Object.exports.request (http.js:31:10)
    at rawRequest (/root/node-docker-registry-client/node_modules/restify/lib/clients/http_client.js:171:21)
    at FunctionCall.doCall_ (/root/node-docker-registry-client/node_modules/backoff/lib/function_call.js:156:20)
    at FunctionCall.start (/root/node-docker-registry-client/node_modules/backoff/lib/function_call.js:145:10)
    at DockerJsonClient.request (/root/node-docker-registry-client/node_modules/restify/lib/clients/http_client.js:597:10)
    at DockerJsonClient.read (/root/node-docker-registry-client/node_modules/restify/lib/clients/string_client.js:69:10)
    at DockerJsonClient.get (/root/node-docker-registry-client/node_modules/restify/lib/clients/http_client.js:508:18)
    at Object.call (/root/node-docker-registry-client/lib/registry-client-v2.js:1158:23)