mirror of https://github.com/linkerd/linkerd2.git
c278228c1b
As a goal of being a transparent proxy, we want to proxy requests and responses with as little modification as possible. Basically, servers and clients should see messages that look the same whether the proxy was injected or not. With that goal in mind, we want to make sure that body headers (things like `Content-Length`, `Transfer-Encoding`, etc) are left alone. Prior to this commit, we at times were changing behavior. Sometimes `Transfer-Encoding` was added to requests, or `Content-Length: 0` may have been removed. While RC 7230 defines that differences are semantically the same, implementations may not handle them correctly. Now, we've added some fixes to prevent any of these header changes from occurring, along with tests to make sure library updates don't regress. For requests: - With no message body, `Transfer-Encoding: chunked` should no longer be added. - With `Content-Length: 0`, the header is forwarded untouched. For responses: - Tests were added that responses not allowed to have bodies (to HEAD requests, 204, 304) did not have `Transfer-Encoding` added. - Tests that `Content-Length: 0` is preserved. - Tests that HTTP/1.0 responses with no body headers do not have `Transfer-Encoding` added. - Tests that `HEAD` responses forward `Content-Length` headers (but not an actual body). Closes #447 Signed-off-by: Sean McArthur <sean@seanmonstar.com> |
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| .. | ||
| support | ||
| discovery.rs | ||
| telemetry.rs | ||
| transparency.rs | ||