dgram: check udp buffer size to avoid fd leak · nodejs/node@7ddbf94

Original file line number	Diff line number	Diff line change
`@@ -59,6 +59,7 @@ const {`
`59`	`59`	`validateString,`
`60`	`60`	`validateNumber,`
`61`	`61`	`validatePort,`
	`62`	`+ validateUint32,`
`62`	`63`	`} = require('internal/validators');`
`63`	`64`	`const { Buffer } = require('buffer');`
`64`	`65`	`const { deprecate, guessHandleType, promisify, SymbolAsyncDispose, SymbolDispose } = require('internal/util');`
`@@ -108,6 +109,12 @@ function Socket(type, listener) {`
`108`	`109`	`options = type;`
`109`	`110`	`type = options.type;`
`110`	`111`	`lookup = options.lookup;`
	`112`	`+if (options.recvBufferSize) {`
	`113`	`+validateUint32(options.recvBufferSize, 'options.recvBufferSize');`
	`114`	`+}`
	`115`	`+if (options.sendBufferSize) {`
	`116`	`+validateUint32(options.sendBufferSize, 'options.sendBufferSize');`
	`117`	`+}`
`111`	`118`	`recvBufferSize = options.recvBufferSize;`
`112`	`119`	`sendBufferSize = options.sendBufferSize;`
`113`	`120`	`}`

Original file line number	Diff line number	Diff line change
`@@ -59,3 +59,16 @@ validTypes.forEach((validType) => {`
`59`	`59`	`socket.close();`
`60`	`60`	`}));`
`61`	`61`	`}`
	`62`	`+`
	`63`	`+{`
	`64`	`+[`
	`65`	`+{ type: 'udp4', recvBufferSize: 'invalid' },`
	`66`	`+{ type: 'udp4', sendBufferSize: 'invalid' },`
	`67`	`+].forEach((options) => {`
	`68`	`+assert.throws(() => {`
	`69`	`+dgram.createSocket(options);`
	`70`	`+}, {`
	`71`	`+code: 'ERR_INVALID_ARG_TYPE',`
	`72`	`+});`
	`73`	`+});`
	`74`	`+}`