Cannot fetch new mails #451
Comments
It’s difficult to say without seeing your code. Could you share some examples? |
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As described, I am planning to wait for an incoming mail that should be received in the next 30 seconds e.g. async waitForEmail(receivedAfter: Dayjs, containsHeader: string, containsBody: string, timeoutMs: number) {
const searchFilter = new SearchFilter.SearchFilterCollection(LogicalOperator.And, [
new SearchFilter.IsGreaterThanOrEqualTo(
ItemSchema.DateTimeReceived,
DateTime.Parse(receivedAfter.format("YYYY-MM-DDTHH:mm:ss"))
),
new SearchFilter.ContainsSubstring(ItemSchema.Subject, containsHeader),
new SearchFilter.ContainsSubstring(ItemSchema.Body, containsBody),
]);
const dateTimeStarted = dayjs();
let emails: Email[] = [];
while (emails.length < 1) {
const dateTimeNow = dayjs();
if (dateTimeStarted.add(timeoutMs, "milliseconds").isBefore(dateTimeNow)) {
throw new MailReceiveTimeoutError(dateTimeStarted, dateTimeNow, timeoutMs);
}
try {
emails = await this.fetchMails(searchFilter, 1);
} catch (err) {
if (err instanceof NotEnoughMailsError) {
await sleep(5_000);
continue;
} else {
throw err;
}
}
}
return emails;
}
async fetchMails(searchFilter: SearchFilter, count: number) {
// Define a view to limit the number of items returned
const view = new ItemView(count);
// Set the properties you want to load
view.PropertySet = new PropertySet(ItemSchema.Subject, ItemSchema.DateTimeReceived);
// Find items in the inbox
const findResults = await this.service.FindItems(this.folder, searchFilter, view);
this.logger.logMessage(`Total items found: ${findResults.TotalCount}`);
if (findResults.TotalCount < count) {
throw new NotEnoughMailsError(count, findResults.TotalCount);
}
const emails: Email[] = [];
// Load additional properties of the items if needed
await this.service.LoadPropertiesForItems(findResults.Items, PropertySet.FirstClassProperties);
for (const item of findResults.Items) {
emails.push(parseEmail(item));
}
return emails;
} |
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are you able to log |
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I was using current time -100 minutes to ensure the time frame is matching and prepared 2 mails that are fetched. After starting the code waiting for 3 messages, I submitted another mail which was received correctly, but not noticed by the code. After restarting, the 3 messages are found correctly. Please find the log with searchFilter here: |
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enable debugging by adding code after import from this lib
this way it will print log of xml messages, see if you find something or give me that |
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It’s strange. It seems like EWS is caching the search results or something similar. I would try the following: (a) create a new filter for each search, (b) add 1 second to the receivedAfter time after each iteration, and (c) increase the number of items, say, to 10. |
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The log was not helpful unfortunately, everything looks good. I also applied the mentioned 3 changes. It could be really some kind of caching. When applying the new datetime minus 100 minutes on each call, it suddenly starts receiving the new mails, but only with a delay. All this still looks very strange to me. |
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That's weird. As I found out, it does find new emails - Here is the code to reproduce this behavior: const {
ExchangeService, WebCredentials, PropertySet, ItemSchema, ItemView, SearchFilter, WellKnownFolderName, Uri,
} = require('ews-javascript-api');
const credentials = require('./credentials.json');
const exch = new ExchangeService(credentials.exchangeVersion);
exch.Credentials = new WebCredentials(credentials.username, credentials.password);
exch.Url = new Uri(credentials.url);
async function searchEmails() {
const view = new ItemView(10);
view.PropertySet = new PropertySet(ItemSchema.Subject, ItemSchema.DateTimeReceived);
const searchFilter = new SearchFilter.ContainsSubstring(ItemSchema.Subject, 'test');
try {
const findResults = await exch.FindItems(WellKnownFolderName.Inbox, searchFilter, view);
console.log(`Found ${findResults.TotalCount} emails`);
// findResults.Items.forEach(item => {
// console.log(`Subject: ${item.Subject}, DateTimeReceived: ${item.DateTimeReceived}`);
// });
} catch (error) {
console.error('Error searching emails:', error);
}
}
setInterval(() => {
searchEmails();
}, 30000); |
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Thank you for investigation, you seem to be right. So for me I it is ok to work with the workaround, but still it would be good to get the |
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I checked the SOAP requests generated by this library, and they seem legit. It looks like this might be a bug or feature of Microsoft's EWS... |
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@bladerunner2020 did you find any issue in updating TotalCount from subsequent response or the value is incorrect from MS side? |
As far as I’ve found, Microsoft’s response contains an incorrect TotalCount value. Even when I create a new instance of Here’s the request envelope: <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:m="http://schemas.microsoft.com/exchange/services/2006/messages"
xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types">
<soap:Header>
<t:RequestServerVersion Version="V2015_10_05"></t:RequestServerVersion>
</soap:Header>
<soap:Body>
<m:FindItem Traversal="Shallow">
<m:ItemShape>
<t:BaseShape>IdOnly</t:BaseShape>
<t:AdditionalProperties>
<t:FieldURI FieldURI="item:Subject"></t:FieldURI>
<t:FieldURI FieldURI="item:DateTimeReceived"></t:FieldURI>
</t:AdditionalProperties>
</m:ItemShape>
<m:IndexedPageItemView MaxEntriesReturned="1" Offset="0" BasePoint="Beginning"></m:IndexedPageItemView>
<m:Restriction>
<t:Contains ContainmentMode="Substring" ContainmentComparison="IgnoreCase">
<t:FieldURI FieldURI="item:Subject"></t:FieldURI>
<t:Constant Value="latest"></t:Constant>
</t:Contains>
</m:Restriction>
<m:ParentFolderIds>
<t:DistinguishedFolderId Id="inbox"></t:DistinguishedFolderId>
</m:ParentFolderIds>
</m:FindItem>
</soap:Body>
</soap:Envelope>Response: <?xml version="1.0" encoding="utf-8"?>
<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
<s:Header>
<h:ServerVersionInfo MajorVersion="15" MinorVersion="2" MajorBuildNumber="1544"
MinorBuildNumber="14" Version="V2017_07_11"
xmlns:h="http://schemas.microsoft.com/exchange/services/2006/types"
xmlns="http://schemas.microsoft.com/exchange/services/2006/types"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" />
</s:Header>
<s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<m:FindItemResponse xmlns:m="http://schemas.microsoft.com/exchange/services/2006/messages"
xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types">
<m:ResponseMessages>
<m:FindItemResponseMessage ResponseClass="Success">
<m:ResponseCode>NoError</m:ResponseCode>
<m:RootFolder IndexedPagingOffset="1" TotalItemsInView="3" IncludesLastItemInRange="false">
<t:Items>
<t:Message>
<t:ItemId
Id="AQMkADQ5ZTQ5NTE3LWExZDItNDM2ZC05NDVlLTZlNTk3M2Q3OWM0NgBGAAAD/nxyUaRXOEOci+3WZu9dewcA0URrlxo4Jky9H9PJlZEgewAAAgEMAAAA0URrlxo4Jky9H9PJlZEgewABIEWrwQAAAA=="
ChangeKey="CQAAABYAAADRRGuXGjgmTL0f08mVkSB7AAEgSrNT" />
<t:Subject>latest something #01</t:Subject>
<t:DateTimeReceived>2025-01-14T11:27:58Z</t:DateTimeReceived>
</t:Message>
</t:Items>
</m:RootFolder>
</m:FindItemResponseMessage>
</m:ResponseMessages>
</m:FindItemResponse>
</s:Body>
</s:Envelope>The current |
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@helmutchecker You might want to try using |
I want to write a method to wait for an incoming mails matching a given
search Filter. Therefore, I am usingservice.FindItemsto fetch items in a loop each 5 seconds. Unfortunately, it finds existing mails and prints e.g. count 8 every 5 seconds, but when a new mail with same matching search criteria is received, it is not registered and count stays at 8.After restarting the code, the initial count is then 9 and when receiving new mails, it is staying at 9 until I restart the code.
Did I misunderstand something about how the library should be working, or do I need to follow a different approach?
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