Handling request body in control channel

[haogang]

Description

This patch fix a few issues:

• Remove use of COUNTER_HTTP_SERVER_RESPONSE, which is undefined in newer version of nodejs
• Pass server argument to requestChannelRequest
• Explicitly consumes request body in the listener example, so that POST request sending through the control channel won't crash the listener. Note that the stream interface inheritance does not seem to work as expected.

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• [ ] I have read the contribution guidelines.
• [ ] Title of the pull request is clear and informative.
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• [ ] The pull request does not introduce breaking changes (unless a major version change occurs in the assembly and module).
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• [ ] The code builds without any errors.

[msftclas]

All CLA requirements met.

[clemensv]

Thanks for the PR. I had the solution already done at that point and was working on the tests. The 1.1.0 package is now published. See here for how this works. One caveat is that the 'message' handler of the underlying 'ws' library buffers up all frames to fin, so large transfers are an issue here. Fixing that will require dropping down one level to explicit frame handling. I'll do that eventually and will remind myself with an issue.

[haogang]

@clemensv Thanks for the fix! Will you please also fix the bug where we don't pass server argument to requestChannelRequest (see https://github.com/Azure/azure-relay-node/blob/master/hyco-https/lib/HybridConnectionHttpsServer.js#L637). The bug will trigger when the client sends a >64KB request.

Simple test case:

const https = require('hyco-https');

const ns = "...";
const path = "...";
const keyrule = "...";
const key = "...";

const token = https.createRelayToken(https.createRelayHttpsUri(ns, path), keyrule, key)
const req = https.request({
    hostname : ns,
    path : (!path || path.length == 0 || path[0] !== '/'?'/':'') + path,
    method : 'POST',
    port : 443,
    headers : {
        'ServiceBusAuthorization' : token,
    }
}, (res) => {
    let error;
    if (res.statusCode !== 200) {
        console.error('Request Failed.\n Status Code:', res.statusCode, res.statusMessage);
        res.resume();
    }
    else {
        res.setEncoding('utf8');
        res.on('data', (chunk) => {
            console.log(`BODY: ${chunk}`);
        });
    };
})

// Sending a > 64KB payload to force rendezvous connection 
req.end('v=' + 'x'.repeat(65 * 1024));