translateHeaders() — netty Function Reference

Architecture documentation for the translateHeaders() function in HttpConversionUtil.java from the netty codebase.

Function java Buffer Allocators called by 1

Entity Profile

Buffer→ Allocators→ translateHeaders() — netty Function Reference

Dependency Diagram

graph TD
  3c2f1ac6_32d0_a245_aca6_64f7bbfc50dd["translateHeaders()"]
  3b111612_c787_0980_aee4_23cd89bf1539["Http3ToHttpHeaderTranslator"]
  3c2f1ac6_32d0_a245_aca6_64f7bbfc50dd -->|defined in| 3b111612_c787_0980_aee4_23cd89bf1539
  745f9797_2af2_8204_28cb_0ad4bef05465["addHttp3ToHttpHeaders()"]
  745f9797_2af2_8204_28cb_0ad4bef05465 -->|calls| 3c2f1ac6_32d0_a245_aca6_64f7bbfc50dd
  style 3c2f1ac6_32d0_a245_aca6_64f7bbfc50dd fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

codec-http3/src/main/java/io/netty/handler/codec/http3/HttpConversionUtil.java lines 605–640

        void translateHeaders(Iterable<Entry<CharSequence, CharSequence>> inputHeaders) throws Http3Exception {
            // lazily created as needed
            StringBuilder cookies = null;

            for (Entry<CharSequence, CharSequence> entry : inputHeaders) {
                final CharSequence name = entry.getKey();
                final CharSequence value = entry.getValue();
                AsciiString translatedName = translations.get(name);
                if (translatedName != null) {
                    output.add(translatedName, AsciiString.of(value));
                } else if (!Http3Headers.PseudoHeaderName.isPseudoHeader(name)) {
                    // https://tools.ietf.org/html/rfc7540#section-8.1.2.3
                    // All headers that start with ':' are only valid in HTTP/3 context
                    if (name.length() == 0 || name.charAt(0) == ':') {
                        throw streamError(streamId, Http3ErrorCode.H3_MESSAGE_ERROR,
                                "Invalid HTTP/3 header '" + name + "' encountered in translation to HTTP/1.x",
                                null);
                    }
                    if (COOKIE.equals(name)) {
                        // combine the cookie values into 1 header entry.
                        // https://tools.ietf.org/html/rfc7540#section-8.1.2.5
                        if (cookies == null) {
                            cookies = InternalThreadLocalMap.get().stringBuilder();
                        } else if (cookies.length() > 0) {
                            cookies.append("; ");
                        }
                        cookies.append(value);
                    } else {
                        output.add(name, value);
                    }
                }
            }
            if (cookies != null) {
                output.add(COOKIE, cookies.toString());
            }
        }