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PST - java HeaderCollection.set(name, value) method fails when cyrillic symbols are provided

Hello!

I’ve tried creating a PST file and it failed when I was trying to set MapiMessage headers via HeaderCollection.set("name", "тест") with an exception
class com.aspose.email.system.exceptions.FormatException: An invalid character was found in header value.

I’ve dived into code and it looks like only ASCII characters can be provided or am I missing something? If so, why is it implemented that way?
Thanks.

@Zeruch

You may use the code sample given below:

mesage.getHeaders().add("secret-header", "mystery");

Moreover, please find more details at this link:
https://docs.aspose.com/display/emailjava/Creating+and+Setting+Contents+of+Emails#CreatingandSettingContentsofEmails-SetEmailHeaders

Thanks for your reply

I’ve tried using HeaderCollection.add("name", "тест"), it worked without an exception, but later the header value is displayed as base64-encoded string =?windows-1251?B?8uXx8g==?= and not as original value тест.
This base64 string is also displayed when I import the .pst file to MS Outlook.

Is there any workaround?
Thanks!

Ok, I’ve managed to resolve this.
I had to use HeaderCollection.add_("name", "тест"), which then displayed the header correctly.

I think this should be fixed somehow or at least documented, cos it’s really confusing.

Thanks, the thread may be closed.

@Zeruch

Thank you for your feedback.
We look into it and update the documentation. However, you may suggest to improve the solution. Your valuable suggestions are always welcome.