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8b751f7eb7
This avoids routing writes through the full LibuvStreamWrap write machinery. In particular, it enables the next commit, because otherwise the callback passed to `_write()` would not be called synchronously for pipes on Windows (because the latter does not support `uv_try_write()`, even for blocking I/O). PR-URL: https://github.com/nodejs/node/pull/18019 Reviewed-By: Anatoli Papirovski <apapirovski@mac.com> Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
40 lines
1.0 KiB
JavaScript
40 lines
1.0 KiB
JavaScript
'use strict';
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const Buffer = require('buffer').Buffer;
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const { writeBuffer } = process.binding('fs');
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// Check that the port number is not NaN when coerced to a number,
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// is an integer and that it falls within the legal range of port numbers.
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function isLegalPort(port) {
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if ((typeof port !== 'number' && typeof port !== 'string') ||
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(typeof port === 'string' && port.trim().length === 0))
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return false;
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return +port === (+port >>> 0) && port <= 0xFFFF;
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}
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function makeSyncWrite(fd) {
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return function(chunk, enc, cb) {
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if (enc !== 'buffer')
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chunk = Buffer.from(chunk, enc);
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this._bytesDispatched += chunk.length;
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try {
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writeBuffer(fd, chunk, 0, chunk.length, null);
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} catch (ex) {
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// Legacy: net writes have .code === .errno, whereas writeBuffer gives the
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// raw errno number in .errno.
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if (typeof ex.code === 'string')
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ex.errno = ex.code;
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return cb(ex);
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}
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cb();
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};
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}
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module.exports = {
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isLegalPort,
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makeSyncWrite,
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normalizedArgsSymbol: Symbol('normalizedArgs')
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};
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