ddclient makes invalid HTTP requests

[rrthomas]

I noticed a problem recently where my updates were being refused despite valid credentials with "400 Bad Request". On investigation, this is because ddclient is making invalid requests: according to the HTTP 1.0 spec "A valid Content-Length is required on all HTTP/1.0 POST requests."

There are two obvious solutions:

1. Make ddclient speak HTTP 1.1. This simply requires changing the version number.
2. Add a Content-Length: 0 header in the case when there is no data being sent.

I've tried both solutions, and both work fine; the first is simpler, but perhaps there are still servers out there that don't speak HTTP 1.1?

[SuperSandro2000]

I've tried both solutions, and both work fine; the first is simpler, but perhaps there are still servers out there that don't speak HTTP 1.1?

If some server still does not support 1.1 from 1999 then they are now deprecated in 2021 and support will be removed in the PR.

[rrthomas]

I don't quite understand, are you saying you'd like me to make a PR to change to HTTP/1.1? (I can easily do that.) Or is there another PR already?

[SuperSandro2000]

I already created a PR.