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'use strict'; const common = require('../common'); if (!common.hasCrypto) common.skip('missing crypto'); const assert = require('assert'); const http2 = require('http2'); const server = http2.createServer(); // Each of these headers must appear only once const singles = [ 'content-type', 'user-agent', 'referer', 'authorization', 'proxy-authorization', 'if-modified-since', 'if-unmodified-since', 'from', 'location', 'max-forwards', ]; server.on('stream', common.mustNotCall()); server.listen(0, common.mustCall(() => { const client = http2.connect(`http://localhost:${server.address().port}`); singles.forEach((i) => { assert.throws( () => client.request({ [i]: 'abc', [i.toUpperCase()]: 'xyz' }), { code: 'ERR_HTTP2_HEADER_SINGLE_VALUE', name: 'TypeError', message: `Header field "${i}" must only have a single value` } ); assert.throws( () => client.request({ [i]: ['abc', 'xyz'] }), { code: 'ERR_HTTP2_HEADER_SINGLE_VALUE', name: 'TypeError', message: `Header field "${i}" must only have a single value` } ); }); server.close(); client.close(); }));