This release contains a hotfix for a regression in v2.6.3 related to proxying chunked requests. We recommend that all users who do so upgrade to v2.6.4.
Note that, in an effort to make error-prone configs less likely, we have deprecated the reverse proxy options:
buffer_requestsbuffer_responsesmax_buffer_size
and have introduced 2 new ones which take a size argument to enable buffering:
request_buffers <size>response_buffers <size>
The deprecated options will be removed in a later version of Caddy, so please start using the new parameters instead.