62 lines
1.4 KiB
JavaScript
62 lines
1.4 KiB
JavaScript
const filteredRequestHeaders = new Set([
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'host',
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'connection',
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'content-length',
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'transfer-encoding',
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'keep-alive',
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'te',
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'trailer',
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'upgrade',
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'accept-encoding',
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]);
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const filteredResponseHeaders = new Set([
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'connection',
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'content-length',
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'transfer-encoding',
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'keep-alive',
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'te',
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'trailer',
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'upgrade',
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'www-authenticate',
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'content-encoding',
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]);
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export const collectForwardProxyHeaders = (requestHeaders, authHeaders = {}) => {
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const headers = {};
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for (const [key, value] of Object.entries(requestHeaders || {})) {
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if (!value) continue;
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const normalizedKey = key.toLowerCase();
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if (filteredRequestHeaders.has(normalizedKey)) continue;
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headers[normalizedKey] = Array.isArray(value) ? value.join(', ') : String(value);
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}
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if (authHeaders.Authorization) {
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headers.Authorization = authHeaders.Authorization;
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}
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return headers;
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};
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export const shouldForwardProxyResponseHeader = (key) => {
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if (typeof key !== 'string' || key.trim().length === 0) {
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return false;
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}
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return !filteredResponseHeaders.has(key.toLowerCase());
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};
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export const applyForwardProxyResponseHeaders = (responseHeaders, response) => {
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if (!responseHeaders || typeof response?.setHeader !== 'function') {
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return;
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}
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for (const [key, value] of responseHeaders.entries()) {
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if (!shouldForwardProxyResponseHeader(key)) {
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continue;
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}
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response.setHeader(key, value);
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}
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};
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