22 const checkRequest = (socket, server) => {  argument
34     server.close();
46   const server = createServer();  constant
47   server.listen(0, common.mustCall(() => {
48     const port = server.address().port;
58     checkRequest(socket, server);
64   const server = createServer();  constant
65   server.listen(0, common.mustCall(() => {
66     const port = server.address().port;
73     checkRequest(socket, server);
79   const server = createServer();  constant
80   server.listen(0, common.mustCall(() => {
81     const port = server.address().port;
88     checkRequest(socket, server);
94   const server = createServer();  constant
95   server.listen(0, common.mustCall(() => {
96     const port = server.address().port;
102     checkRequest(socket, server);
108   const server = createServer();  constant
109   server.listen(0, common.mustCall(() => {
110     const port = server.address().port;
116       server.close();
123   const server = createServer();  constant
124   server.listen(0, common.mustCall(() => {
125     const port = server.address().port;
131       server.close();
138   const server = createServer();  constant
139   server.listen(0, common.mustCall(() => {
140     const port = server.address().port;
155       server.close();