rjweb-server/lib/esm/functions/writeHeaders.js

Easy and Robust Way to create a Web Server with Many Easy-to-use Features in NodeJS

import toETag from "./toETag";
import Status from "../enums/status";
import { STATUS_CODES } from "http";
import parseContent from "./parseContent";
import { isDate } from "util/types";
import toString from "./toString";
/**
 * Write HTTP Headers
 * @since 9.0.0
*/ export default async function writeHeaders(body, context, rawContext) {
    if (context.global.options.performance.eTag && body) {
        const eTag = toETag(body, context.response.headers.toJSON(), context.response.cookies.toJSON(), context.response.status);
        if (eTag) {
            if (context.headers.get('if-none-match') === eTag) {
                rawContext.status(Status.NOT_MODIFIED, STATUS_CODES[context.response.status] || 'Unknown').write(new ArrayBuffer(0));
                return false;
            }
            context.response.headers.set('etag', eTag);
        }
    }
    for (const [key, value] of context.response.headers) {
        rawContext.header(key, value);
    }
    for (const [cookie, data] of context.response.cookies) {
        const parsed = await parseContent(data.value);
        let cookieString = `${cookie}=${encodeURIComponent(toString(parsed.content))}`;
        if (data.domain)
            cookieString += `;Domain=${data.domain}`;
        if (typeof data.expires === 'number')
            cookieString += `;Max-Age=${data.expires}`;
        if (isDate(data.expires))
            cookieString += `;Expires=${data.expires.toUTCString()}`;
        if (data.httpOnly)
            cookieString += ';HttpOnly';
        if (data.path)
            cookieString += `;Path=${data.path}`;
        if (data.sameSite)
            cookieString += `;SameSite=${data.sameSite[0].toUpperCase()}${data.sameSite.slice(1)}`;
        if (data.secure)
            cookieString += ';Secure';
        rawContext.header('set-cookie', cookieString);
    }
    return true;
}