Function multipartFetch

native.ts:71–82

(url: string, fields: Record<string, string>, fileFieldName: string, fileBuffer: ArrayBuffer, filename: string, headers: Record<string, string> = {})

}

function multipartFetch(url: string, fields: Record<string, string>, fileFieldName: string, fileBuffer: ArrayBuffer, filename: string, headers: Record<string, string> = {}): Promise<Response> {
    const boundary = `----BigFileUpload${Date.now().toString(16)}${Math.random().toString(16).slice(2)}`;
    const encoder = new TextEncoder();
    const safeName = filename.replace(/[\r\n"]/g, "_");
    let head = "";
    for (const [name, value] of Object.entries(fields)) {
        head += `--${boundary}\r\nContent-Disposition: form-data; name="${name}"\r\n\r\n${value}\r\n`;
    }
    head += `--${boundary}\r\nContent-Disposition: form-data; name="${fileFieldName}"; filename="${safeName}"\r\nContent-Type: application/octet-stream\r\n\r\n`;
    const parts = [encoder.encode(head), new Uint8Array(fileBuffer), encoder.encode(`\r\n--${boundary}--\r\n`)];
    return streamFetch(url, "POST", headers, parts, `multipart/form-data; boundary=${boundary}`);
}

function rawFetch(url: string, method: string, fileBuffer: ArrayBuffer, headers: Record<string, string> = {}): Promise<Response> {
    return streamFetch(url, method, headers, [new Uint8Array(fileBuffer)]);