split server/client for tcp echo benchmark to better measure net.Socket perf

bench/snippets/tcp-echo.bun.ts

@@ -36,7 +36,7 @@ setInterval(() => {
 
 const server = listen({
   socket: handlers,
-  hostname: "localhost",
+  hostname: "0.0.0.0",
   port: 8080,
   data: {
     isServer: true,
@@ -44,6 +44,6 @@ const server = listen({
 });
 const connection = await connect({
   socket: handlers,
-  hostname: "localhost",
+  hostname: "0.0.0.0",
   port: 8080,
 });

bench/snippets/tcp-echo.node.mjs

@@ -29,66 +29,68 @@ const handlers = {
   },
 };
 
-if (net.createServer) {
-  const server = net.createServer(function (socket) {
-    socket.data = { isServer: true };
-    socket.on("connection", handlers.open.bind(socket));
-    socket.on("data", handlers.data.bind(socket));
-    socket.on("drain", handlers.drain.bind(socket));
-    socket.setEncoding("binary");
-  });
+if (process.env.IS_SERVER) {
+  if (net.createServer) {
+    const server = net.createServer(function (socket) {
+      socket.data = { isServer: true };
+      socket.on("connection", handlers.open.bind(socket));
+      socket.on("data", handlers.data.bind(socket));
+      socket.on("drain", handlers.drain.bind(socket));
+      socket.setEncoding("binary");
+    });
 
-  setInterval(() => {
-    console.log("Wrote", counter, "messages");
-    counter = 0;
-  }, 1000);
+    setInterval(() => {
+      console.log("Wrote", counter, "messages");
+      counter = 0;
+    }, 1000);
 
-  server.listen(8000);
-} else {
-  const handlers = {
-    open(socket) {
-      if (!socket.data?.isServer) {
-        if (!socket.write(msg)) {
-          socket.data = { pending: msg };
+    server.listen(8000);
+  } else {
+    const handlers = {
+      open(socket) {
+        if (!socket.data?.isServer) {
+          if (!socket.write(msg)) {
+            socket.data = { pending: msg };
+          }
+        }
+      },
+      data(socket, buffer) {
+        if (!socket.write(buffer)) {
+          socket.data = { pending: buffer };
+          return;
         }
-      }
-    },
-    data(socket, buffer) {
-      if (!socket.write(buffer)) {
-        socket.data = { pending: buffer };
-        return;
-      }
-      counter++;
-    },
-    drain(socket) {
-      const pending = socket.data?.pending;
-      if (!pending) return;
-      if (socket.write(pending)) {
-        socket.data = undefined;
         counter++;
-        return;
-      }
-    },
-  };
+      },
+      drain(socket) {
+        const pending = socket.data?.pending;
+        if (!pending) return;
+        if (socket.write(pending)) {
+          socket.data = undefined;
+          counter++;
+          return;
+        }
+      },
+    };
 
-  setInterval(() => {
-    console.log("Wrote", counter, "messages");
-    counter = 0;
-  }, 1000);
+    setInterval(() => {
+      console.log("Wrote", counter, "messages");
+      counter = 0;
+    }, 1000);
 
-  const server = Bun.listen({
-    socket: handlers,
-    hostname: "0.0.0.0",
-    port: 8000,
-    data: {
-      isServer: true,
-    },
-  });
+    const server = Bun.listen({
+      socket: handlers,
+      hostname: "0.0.0.0",
+      port: 8000,
+      data: {
+        isServer: true,
+      },
+    });
+  }
+} else {
+  const socket = net.connect({ host: "0.0.0.0", port: 8000 }, () => {});
+  socket.on("connection", handlers.open.bind(socket));
+  socket.on("data", handlers.data.bind(socket));
+  socket.on("drain", handlers.drain.bind(socket));
+  socket.setEncoding("binary");
+  socket.write(buffer);
 }
-
-const socket = net.connect({ host: "0.0.0.0", port: 8000 }, () => {});
-socket.on("connection", handlers.open.bind(socket));
-socket.on("data", handlers.data.bind(socket));
-socket.on("drain", handlers.drain.bind(socket));
-socket.setEncoding("binary");
-socket.write(buffer);