QueueTriggered Function for processing HTTP Status Codes returned from Exchange ActiveSync

EASQueueTrigger.csx

using System;

public static void Run(string myQueueItem, out object statusDocument, TraceWriter log)
{
    log.Info($"C# Queue trigger function processed: {myQueueItem}");
    var status = myQueueItem.Split(';');
    log.Info($"Guid: {status[0]}, StatusCode: {status[1]}");
    var guid = status[0];
    var resCode = status[1];
    
    //Always output to a doc db so we can pull stats later
    statusDocument = new {
        id = guid,
        status =  resCode,
        timeStamp =  DateTime.UtcNow
    };
    
    if (resCode == "200")
    {
        //All is good on the HTTP side
        //WBXML parsed outside this function
    }
    if (resCode == "302")
    {
        // Explanation:
        // Server issued a redirect to a new URL. You should issue a new Autodiscover (and change FQDN).
        // Status: Further action required.
    }
    if(resCode == "400")
    {
        // Explanation:;
        // Possibly a protocol mismatch, for example using version 14.0 against an Exchange 2007 server.
        // Choose a different protocol version to emulate, and try to run test again.
        // Status: FAIL
    }
    if (resCode == "401")
    {
        // Explanation:
        // Wrong username/password. May also occur if you're using a reverse proxy which performs authentication.
        // Could also be caused by authenticating with user@domain.com if Active Directory doesn't accept this.
        // Status: FAIL";
    }
    if (resCode == "403")
    {
        //EAS version indicates which Exchange Server version we're emulating
        //Hardwire to Exchange 2013
        var strEASVersion = "14.1";
        if (strEASVersion == "12.0" || strEASVersion == "12.1")
        {
          // Explanation:
          // You are either running a non-provisionable device, or a provisionable device that haven't been provisioned yet.
          // First check: Tick off "Provisionable device" and run test again.
          // Second check Tick off "Support security policies" and run test again.
          // Status: Further action required
        }
        else
        {
            // Explanation:
            // The server requires SSL and will not let you connect over HTTP.
            // (For instance trying to connect over HTTP while IIS requires SSL.)
            // Status: Further action required
        }                        
    }
    if (resCode == "404")
    {
        // Explanation:
        // File not found shouldn't occur...check IIS that files are not missing, and that the endpoint is correct.
        // Status: FAIL
    }
    if (resCode == "449")
    {
        //We don't support provisioning client-side so we hardwire this result 
        var bProvisionable = false;
        if (bProvisionable == false)
        {
            // Explanation:
            // You seem to be using a non-provisionable device.
            // Check "Provisionable device" and run test again.
            // Status: Further action required
        }
        else
        {
            // Explanation:
            // You seem to be running a provisionable device, but will need to apply policies before sync is allowed.
            // Check "Support security policies" and run test again.
            // Status: Further action required
        }
    }
    if (resCode == "451")
    {
        // Explanation:
        // Redirect request. Your mailbox is located on a different server.
        // Address returned by Exchange: " + httpEx.Response.Headers.Get("X-MS-Location")
        // Please change the FQDN part in the "Server Address" field.
        // Status: Further action required
    }
    //Note: 501 & 505 should only occur when doing GET, not POST
    if (resCode == "501" || resCode == "505")
    {
        // Explanation:
        // This is correct behaviour, and means your Exchange server is responding!
        // Status: PASS
    }
    if (resCode == "502")
    {
        // Explanation:
        // There is a server available at this FQDN and this port, but it's not responding to your request.
        // Could for instance happen if http://contoso.com does not redirect to an Exchange server.
        // Status: FAIL
    }
    if (resCode == "503")
    {
        // Explanation:
        // You server is either experiencing too much load, or in a maintenance mode.
        // Check again in a short while, and if problem persists check that all services are running on your Exchange server.
        // Status: FAIL
    }
    if (resCode == "504")
    {
        // Explanation:
        // Seems your Exchange server might have problems on the back end connecting to other servers (possibly Active Directory).
        // Check network connectivity on your Exchange server. (Problem most likely not between ActiveSync client and Exchange.)
        // Status: FAIL
    }
}