@bsv/overlay/dist/esm/src/BASMRemote.js

BSV Blockchain Overlay Services Engine

export class BASMRemote {
    endpoint;
    topic;
    fetchImpl;
    constructor(endpoint, topic, fetchImpl = fetch.bind(globalThis)) {
        this.endpoint = endpoint;
        this.topic = topic;
        this.fetchImpl = fetchImpl;
    }
    async requestTopicAnchorTip() {
        return await this.post('/requestTopicAnchorTip', {});
    }
    async requestTopicAnchorRange(fromHeight, toHeight) {
        return await this.post('/requestTopicAnchorRange', { fromHeight, toHeight });
    }
    async requestAdmittedList(blockHeight, blockHash) {
        return await this.post('/requestAdmittedList', { blockHeight, blockHash });
    }
    async requestCompoundMerklePath(blockHeight, txids) {
        return await this.post('/requestCompoundMerklePath', { blockHeight, txids });
    }
    async requestRawTransactions(txids) {
        return await this.post('/requestRawTransactions', { txids });
    }
    async post(path, body) {
        const response = await this.fetchImpl(new URL(path, this.endpoint).toString(), {
            method: 'POST',
            headers: {
                Accept: 'application/json',
                'Content-Type': 'application/json',
                'x-bsv-topic': this.topic
            },
            body: JSON.stringify(body)
        });
        const text = await response.text();
        if (!response.ok) {
            throw new Error(`BASM peer ${this.endpoint} returned ${response.status}: ${text}`);
        }
        return (text.length === 0 ? {} : JSON.parse(text));
    }
}
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