Ensure HTTP protocol implementations strictly follow RFC standards and handle edge cases correctly. This includes proper header parsing that respects quoted-string constructions, realistic port value assignments, and appropriate status code filtering.
Key areas to verify:
Header parsing: Avoid naive string splitting for headers that may contain quoted strings with commas. Headers like content-type and authorization can include quoted parameters that contain commas, requiring RFC 7230-compliant parsing that handles optional whitespace (OWS) and quoted-string constructions.
Port value realism: Use realistic port numbers for network simulation. Ephemeral source ports should be in the range 32768-65535 (2^15 to 2^16), not standard service ports like 80.
Status code support: Filter out unsupported HTTP status codes early in the implementation. For example, if 1xx status codes aren’t supported by the runtime, validate and reject them at the protocol level.
Node.js compatibility: Support standard Node.js networking behaviors like automatic port assignment (port 0) where the system assigns an available port.
Example of problematic header parsing:
// Incorrect - breaks on quoted strings
headers.push(key, value.split(', ').at(0) as string);
// Better approach needed for headers like:
// content-type: text/plain; f="a, b, c", text/foo; a="1, 2, 3"
Example of realistic port assignment:
// Instead of hardcoded 80
get remotePort(): number {
return 80; // Unrealistic for source ports
}
// Use realistic ephemeral port range
get remotePort(): number {
return 32768; // Realistic source port
}
This ensures network protocol implementations are robust, standards-compliant, and handle real-world edge cases that could cause parsing failures or compatibility issues.
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