39 lines
1.1 KiB
JavaScript
39 lines
1.1 KiB
JavaScript
function createBodyTooLargeError(maxRequestBodySize) {
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return Object.assign(/* @__PURE__ */ new Error(`Request body exceeds the maximum allowed size of ${maxRequestBodySize} bytes.`), {
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code: "ERR_BODY_TOO_LARGE",
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statusCode: 413,
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status: 413
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});
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}
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function limitBodyStream(stream, maxRequestBodySize) {
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const reader = stream.getReader();
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let size = 0;
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return new ReadableStream({
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async pull(controller) {
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const { done, value } = await reader.read();
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if (done) {
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controller.close();
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return;
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}
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size += value.byteLength;
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if (size > maxRequestBodySize) {
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const error = createBodyTooLargeError(maxRequestBodySize);
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reader.cancel(error).catch(() => {});
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controller.error(error);
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return;
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}
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controller.enqueue(value);
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},
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cancel(reason) {
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return reader.cancel(reason);
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}
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});
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}
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function limitRequestBody(request, maxRequestBodySize) {
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if (!request.body) return request;
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return new Request(request, {
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body: limitBodyStream(request.body, maxRequestBodySize),
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duplex: "half"
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});
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}
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export { createBodyTooLargeError, limitBodyStream, limitRequestBody };
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