Switch back to chi compress middleware and allow more content types

http.go

@@ -4,6 +4,7 @@ import (
 	"database/sql"
 	"errors"
 	"fmt"
+	"io"
 	"log"
 	"net"
 	"net/http"
@@ -14,8 +15,9 @@ import (
 	"github.com/go-chi/chi/v5"
 	"github.com/go-chi/chi/v5/middleware"
 	"github.com/justinas/alice"
-	"github.com/klauspost/compress/gzhttp"
+	"github.com/klauspost/compress/flate"
 	"github.com/klauspost/compress/gzip"
+	"go.goblog.app/app/pkgs/contenttype"
 	"go.goblog.app/app/pkgs/maprouter"
 	"golang.org/x/net/context"
 )
@@ -41,11 +43,31 @@ func (a *goBlog) startServer() (err error) {
 	if a.cfg.Server.Logging {
 		h = h.Append(a.logMiddleware)
 	}
-	compressor, err := gzhttp.NewWrapper(gzhttp.CompressionLevel(gzip.BestCompression))
-	if err != nil {
-		return err
-	}
-	h = h.Append(middleware.Recoverer, func(next http.Handler) http.Handler { return compressor(next) }, middleware.Heartbeat("/ping"))
+	compressor := middleware.NewCompressor(flate.BestCompression, []string{
+		contenttype.AS,
+		contenttype.ATOM,
+		contenttype.CSS,
+		contenttype.HTML,
+		contenttype.JS,
+		contenttype.JSON,
+		contenttype.JSONFeed,
+		contenttype.LDJSON,
+		contenttype.RSS,
+		contenttype.Text,
+		contenttype.XML,
+		"application/opensearchdescription+xml",
+		"application/jrd+json",
+		"application/xrd+xml",
+	}...)
+	compressor.SetEncoder("deflate", func(w io.Writer, level int) io.Writer {
+		cw, _ := flate.NewWriter(w, level)
+		return cw
+	})
+	compressor.SetEncoder("gzip", func(w io.Writer, level int) io.Writer {
+		cw, _ := gzip.NewWriterLevel(w, level)
+		return cw
+	})
+	h = h.Append(middleware.Recoverer, compressor.Handler, middleware.Heartbeat("/ping"))
 	if a.httpsConfigured(false) {
 		h = h.Append(a.securityHeaders)
 	}