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'use strict'; const common = require('../common'); if (!common.hasCrypto) common.skip('missing crypto'); const assert = require('assert'); const h2 = require('http2'); // Http2ServerResponse.flushHeaders let serverResponse; const server = h2.createServer(); server.listen(0, common.mustCall(function() { const port = server.address().port; server.once('request', common.mustCall(function(request, response) { assert.strictEqual(response.headersSent, false); assert.strictEqual(response._header, false); // Alias for headersSent response.flushHeaders(); assert.strictEqual(response.headersSent, true); assert.strictEqual(response._header, true); response.flushHeaders(); // Idempotent assert.throws(() => { response.writeHead(400, { 'foo-bar': 'abc123' }); }, { code: 'ERR_HTTP2_HEADERS_SENT' }); response.on('finish', common.mustCall(function() { server.close(); process.nextTick(() => { response.flushHeaders(); // Idempotent }); })); serverResponse = response; })); const url = `http://localhost:${port}`; const client = h2.connect(url, common.mustCall(function() { const headers = { ':path': '/', ':method': 'GET', ':scheme': 'http', ':authority': `localhost:${port}` }; const request = client.request(headers); request.on('response', common.mustCall(function(headers, flags) { assert.strictEqual(headers['foo-bar'], undefined); assert.strictEqual(headers[':status'], 200); serverResponse.end(); }, 1)); request.on('end', common.mustCall(function() { client.close(); })); request.end(); request.resume(); })); }));