tsweb: add transparent compression for StdHandlerraggi/tsweb-compression

Implements inline compression for both gzip and brotli via the brotli
library. The library requires that Content-Type is set. The
implementation here explicitly avoids wrapping the ResponseWriter in
cases where Accept-Encoding is not set so as to maximally attempt to get
out of the way of hijack and upgrade concerns. It also avoids any
attempt at compression if Content-Encoding is already set so that
handlers that already perform compression are unaffected.

Signed-off-by: James Tucker <james@tailscale.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/tsweb/tsweb.go b/tsweb/tsweb.go
index 8b52e656d..ac6a14332 100644
--- a/tsweb/tsweb.go
+++ b/tsweb/tsweb.go
@@ -239,7 +239,7 @@ func StdHandler(h ReturnHandler, opts HandlerOptions) http.Handler {
 	if opts.Logf == nil {
 		opts.Logf = logger.Discard
 	}
-	return retHandler{h, opts}
+	return compressingHandler{retHandler{h, opts}}
 }
 
 // retHandler is an http.Handler that wraps a Handler and handles errors.