getContentLength() — netty Function Reference

Architecture documentation for the getContentLength() function in HttpUtil.java from the netty codebase.

Function java ProtocolCodecs HTTP calls 1

Entity Profile

ProtocolCodecs→ HTTP→ getContentLength() — netty Function Reference

Dependency Diagram

graph TD
  6f9da954_b612_8a2c_b28f_103659ebf676["getContentLength()"]
  0b1cc975_2772_c898_b055_3991b4e80dba["HttpUtil"]
  6f9da954_b612_8a2c_b28f_103659ebf676 -->|defined in| 0b1cc975_2772_c898_b055_3991b4e80dba
  53f80eda_5c94_cd8f_15bf_80479efefe57["getWebSocketContentLength()"]
  6f9da954_b612_8a2c_b28f_103659ebf676 -->|calls| 53f80eda_5c94_cd8f_15bf_80479efefe57
  style 6f9da954_b612_8a2c_b28f_103659ebf676 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

codec-http/src/main/java/io/netty/handler/codec/http/HttpUtil.java lines 205–220

    public static long getContentLength(HttpMessage message) {
        String value = message.headers().get(HttpHeaderNames.CONTENT_LENGTH);
        if (value != null) {
            return Long.parseLong(value);
        }

        // We know the content length if it's a Web Socket message even if
        // Content-Length header is missing.
        long webSocketContentLength = getWebSocketContentLength(message);
        if (webSocketContentLength >= 0) {
            return webSocketContentLength;
        }

        // Otherwise we don't.
        throw new NumberFormatException("header not found: " + HttpHeaderNames.CONTENT_LENGTH);
    }