IOException is thrown if the Response after send email is non 2xx

[sanaulla123]

Issue Summary

IOException is thrown from the api() method of SendGrid (originating from Client#executeApiCall() method) if the Response of send email is non 2xx.

We would like to get back the error in the form of a Response object.

Technical details:

• sendgrid-java Version: 3.1.0
• Java Version: 1.7

[thinkingserious]

Thank you for the suggestion @sanaulla123, I have added it to our backlog.

For this issue to rise in priority, we need others to +1 this issue or a PR.

With Best Regards,

Elmer

[sanaulla123]

is there some history behind throwing IOException? because I see a comment there stating the exception is thrown to support other APIs or something like.
If not , then I can work on the PR for it.

[thinkingserious]

@sanaulla123,

I'm not entirely sure, but I think what you propose is sane. We would greatly appreciate your PR :)

[Ronpgo]

It is especially a problem for the delete api which returns 400 if all the elements are already deleted.
Because the exception does not perserve the headers, it is very easy to hit the rate limit and start getting 429s. i.e. the client has no idea how long to sleep under these conditions.

[thinkingserious]

Thanks @Ronpgo,

I've added your vote to this issue.

[thinkingserious]

This will be resolved here.