@helia/verified-fetch/dist/src/plugins/plugin-handle-byte-range-context.js

A fetch-like API for obtaining verified & trustless IPFS content on the web

import { ByteRangeContext } from '../utils/byte-range-context.js';
import { badRangeResponse } from '../utils/responses.js';
import { BasePlugin } from './plugin-base.js';
/**
 * This plugin simply adds the ByteRangeContext to the PluginContext.
 */
export class ByteRangeContextPlugin extends BasePlugin {
    id = 'byte-range-context-plugin';
    /**
     * Return false if the ByteRangeContext has already been set, otherwise return true.
     */
    canHandle(context) {
        return context.byteRangeContext == null;
    }
    async handle(context) {
        context.byteRangeContext = new ByteRangeContext(this.pluginOptions.logger, context.options?.headers);
        context.modified++;
        if (context.byteRangeContext.isRangeRequest && !context.byteRangeContext.isValidRangeRequest) {
            // invalid range request.. fail
            return badRangeResponse(context.resource);
        }
        return null;
    }
}
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