ok2c commented on code in PR #651:
URL:
https://github.com/apache/httpcomponents-client/pull/651#discussion_r2156773826
##########
httpclient5/src/main/java/org/apache/hc/client5/http/impl/classic/ContentCompressionExec.java:
##########
@@ -81,36 +81,47 @@ public final class ContentCompressionExec implements
ExecChainHandler {
private final Lookup<InputStreamFactory> decoderRegistry;
private final boolean ignoreUnknown;
+ private static final Map<ContentCoding, InputStreamFactory> DECODERS =
ContentDecoderRegistry.getRegistry();
+
+ /**
+ * Pre-built list of all supported tokens (plus X-GZIP alias) for
+ * the Accept-Encoding header, to avoid reconstructing it every time.
+ */
+ private static final List<String> DEFAULT_ACCEPT_ENCODINGS;
+ static {
+ final List<String> tmp = new ArrayList<>(DECODERS.size() + 1);
+ for (final ContentCoding coding : DECODERS.keySet()) {
+ tmp.add(coding.token());
+ }
+ // add x-gzip alias if gzip is present
+ if (DECODERS.containsKey(ContentCoding.GZIP)) {
+ tmp.add(ContentCoding.X_GZIP.token());
+ }
+ DEFAULT_ACCEPT_ENCODINGS = Collections.unmodifiableList(tmp);
+ }
+
public ContentCompressionExec(
final List<String> acceptEncoding,
final Lookup<InputStreamFactory> decoderRegistry,
final boolean ignoreUnknown) {
- final boolean brotliSupported = decoderRegistry == null &&
BrotliDecompressingEntity.isAvailable();
- if (acceptEncoding != null) {
- this.acceptEncoding =
MessageSupport.headerOfTokens(HttpHeaders.ACCEPT_ENCODING, acceptEncoding);
- } else {
- final List<String> encodings = new ArrayList<>(4);
- encodings.add("gzip");
- encodings.add("x-gzip");
- encodings.add("deflate");
- if (brotliSupported) {
- encodings.add("br");
- }
- this.acceptEncoding =
MessageSupport.headerOfTokens(HttpHeaders.ACCEPT_ENCODING, encodings);
- }
+ final List<String> encodingsHeader = acceptEncoding != null ?
acceptEncoding : DEFAULT_ACCEPT_ENCODINGS;
Review Comment:
@arturobernalg No, I do not. Everything look OK to me.
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