Marc Mintel
5397309103
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52 lines
1.7 KiB
Plaintext
52 lines
1.7 KiB
Plaintext
import { status as httpStatus } from 'http-status';
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import { parseRangeHeader } from './parseRangeHeader.js';
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/**
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* Gets HTTP Range request information according to RFC 7233
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*
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* @param fileSize - The total size of the file in bytes
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* @param rangeHeader - The Range header value from the request (e.g., "bytes=0-1023")
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* @returns Result object with headers and status code for the response
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*/ export function getRangeRequestInfo({ fileSize, rangeHeader }) {
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// Parse the Range header
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const rangeResult = parseRangeHeader({
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fileSize,
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rangeHeader
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});
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// Handle invalid range
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if (rangeResult.type === 'invalid') {
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return {
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type: 'invalid',
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headers: {
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'Content-Range': `bytes */${fileSize}`
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},
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status: httpStatus.REQUESTED_RANGE_NOT_SATISFIABLE
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};
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}
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// Handle partial range request
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if (rangeResult.type === 'partial' && rangeResult.range) {
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const { end, start } = rangeResult.range;
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const contentLength = end - start + 1;
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return {
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type: 'partial',
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headers: {
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'Accept-Ranges': 'bytes',
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'Content-Length': String(contentLength),
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'Content-Range': `bytes ${start}-${end}/${fileSize}`
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},
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rangeEnd: end,
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rangeStart: start,
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status: httpStatus.PARTIAL_CONTENT
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};
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}
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// Handle full file request (no range or invalid)
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return {
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type: 'full',
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headers: {
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'Accept-Ranges': 'bytes',
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'Content-Length': String(fileSize)
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},
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status: httpStatus.OK
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};
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}
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//# sourceMappingURL=getRangeRequestInfo.js.map |