Monitor multiple mailbox

[thlee927]

I have multiple mailbox, the auth method of these mailbox are different. (basic auth, NTLMv2 )
I can use this API (ews-javascript-api@0.9.0-dev.4, ews-javascript-api-auth@1.2.0) to monitor the mailbox as below cases:

• multiple basic auth mailbox
• single NTLMv2 mailbox

Here is my source code to create the service.

for loop mailBox start===>
    var ews = require('ews-javascript-api');
    ews.EwsLogging.DebugLogEnabled = false;
    var service = new ews.ExchangeService(ews.ExchangeVersion.Exchange2013);
    var ewsAuth = require("./lib/ews-javascript-api-auth-ntlmv2/src/ntlmAuthXhrApi");
    var xhrHelper = new ewsAuth.ntlmAuthXhrApi(mailBox.AccountAddress, mailBox.AccountPassword);
    ews.ConfigurationApi.ConfigureXHR(xhrHelper);
    service.Credentials = new ews.ExchangeCredentials(mailBox.AccountAddress, mailBox.AccountPassword);
    service.Url = new ews.Uri(config.emailServer[mailBox.EmailServer]);
    //subscribe streaming notification
.........
<===== loop end 

When I try to monitor multiple NTLMv2 mailbox, it will throw an error. (Unhandled rejection Error: Invalid message signature)
I have check the source code, "ews.ConfigurationApi.ConfigureXHR" method is static. It only store the latest xhrHelper.

I found a workaround to handle this issue. Call "ews.ConfigurationApi.ConfigureXHR" method first, then call the bind method to retrieve the folder and email message.

function notificationEvent(mailBox, ews, xhrHelper){
    return function(streamingSubscriptionConnectionInstance, notificationEventArgs){
        var subscription = notificationEventArgs.Subscription;
        ews.ConfigurationApi.ConfigureXHR(xhrHelper);
        _.forEach(notificationEventArgs.Events, (notification) => {
            //winston.info(notification);
            if(notification instanceof ews.ItemEvent){                    
                var folder = null, email = null;
                ews.Folder.Bind(subscription.service, notification.parentFolderId).then((response)=>{
                    folder = response;
                    var additionalProps = [];
                    additionalProps.push(ews.ItemSchema.MimeContent);
                    additionalProps.push(ews.ItemSchema.UniqueBody);
                    var propertySet = new ews.PropertySet(ews.BasePropertySet.FirstClassProperties, additionalProps)
                    return ews.EmailMessage.Bind(subscription.service, notification.itemId, propertySet);
                }).then((response)=>{
                    email = response;
                    handleEmail(mailBox, notification, folder, email, ews);
                })
            }
        })
    };
}

But I have a concern on concurrent receive email case.
Do you have any suggestion to handle this case? Thanks

[gautamsi]

you should be able to do this starting 0.9.0 see #180