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extractExtensions() — netty Function Reference

Architecture documentation for the extractExtensions() function in WebSocketExtensionUtil.java from the netty codebase.

Function java ProtocolCodecs HTTP called by 1

Entity Profile

Dependency Diagram

graph TD
  9b18588e_5a2b_146d_9573_0d4226f7c5f3["extractExtensions()"]
  36acf548_12c0_7c6a_f443_4b411d0a25e8["WebSocketExtensionUtil"]
  9b18588e_5a2b_146d_9573_0d4226f7c5f3 -->|defined in| 36acf548_12c0_7c6a_f443_4b411d0a25e8
  2a5c1014_65bf_067f_f094_5a28f0180f9a["String()"]
  2a5c1014_65bf_067f_f094_5a28f0180f9a -->|calls| 9b18588e_5a2b_146d_9573_0d4226f7c5f3
  style 9b18588e_5a2b_146d_9573_0d4226f7c5f3 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

codec-http/src/main/java/io/netty/handler/codec/http/websocketx/extensions/WebSocketExtensionUtil.java lines 47–73

    public static List<WebSocketExtensionData> extractExtensions(String extensionHeader) {
        String[] rawExtensions = extensionHeader.split(EXTENSION_SEPARATOR);
        if (rawExtensions.length > 0) {
            List<WebSocketExtensionData> extensions = new ArrayList<WebSocketExtensionData>(rawExtensions.length);
            for (String rawExtension : rawExtensions) {
                String[] extensionParameters = rawExtension.split(PARAMETER_SEPARATOR);
                String name = extensionParameters[0].trim();
                Map<String, String> parameters;
                if (extensionParameters.length > 1) {
                    parameters = new LinkedHashMap<String, String>(extensionParameters.length - 1);
                    for (int i = 1; i < extensionParameters.length; i++) {
                        String parameter = extensionParameters[i].trim();
                        Matcher parameterMatcher = PARAMETER.matcher(parameter);
                        if (parameterMatcher.matches() && parameterMatcher.group(1) != null) {
                            parameters.put(parameterMatcher.group(1), parameterMatcher.group(3));
                        }
                    }
                } else {
                    parameters = Collections.emptyMap();
                }
                extensions.add(new WebSocketExtensionData(name, parameters));
            }
            return extensions;
        } else {
            return Collections.emptyList();
        }
    }

Domain

Subdomains

Defined In

Called By

Source

Frequently Asked Questions

What does extractExtensions() do?
extractExtensions() is a function in the netty codebase, defined in codec-http/src/main/java/io/netty/handler/codec/http/websocketx/extensions/WebSocketExtensionUtil.java.
Where is extractExtensions() defined?
extractExtensions() is defined in codec-http/src/main/java/io/netty/handler/codec/http/websocketx/extensions/WebSocketExtensionUtil.java at line 47.
What calls extractExtensions()?
extractExtensions() is called by 1 function(s): String.

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