As per the below link, 'Content-Length' is required in the request headers of Microsoft Translator API request.
https://docs.microsoft.com/en-gb/azure/cognitive-services/Translator/reference/v3-0-translate
However, we observed that the translations are getting successful even if we don't pass this request header attribute.
It will be really helpful if someone can confirm whether this 'Content-Length' request header attribute is a mandatory field or not.
If required, please provide the convention details to provide the length of the request body like characters count (converting request body into string and get chars count) or KiB or code points or any other..