override_fetch

override_fetch(request, ctx) completely replaces SpyWeb’s internal HTTP client. Use this when you need custom fetching, like launching a Chrome instance via CDP or using a proxy rotater.

Signature

function override_fetch(request, ctx) -> table

Parameters

Same as before_fetch.

Returns

Return	Effect
response object	A standard response table ({ status = 200, body = "...", url = "..." }). Output acts exactly like a native fetch result and will still pass through after_fetch if defined.
{ error = "msg" }	Simulate a network failure
nil or false	Causes a pipeline error (“must return a response table”). Unlike other hooks, nil/false does NOT mean skip — this hook must always return a response table or an error table.

Example

function override_fetch(request, ctx)
    local res, err = http_get("http://my-renderer.local/?url=" .. request.url)
    if not res then
        return { error = "renderer request failed: " .. err.error }
    end
    return {
        status = res.status,
        url = request.url,
        body = res.body,
        headers = res.headers
    }
end

See Also

• before_fetch - Modify the request (but still use built-in fetch)
• after_fetch - Process the response after fetching