first commit

dealer.js

@@ -0,0 +1,31 @@
+const zmq = require('zeromq');
+const fs = require('fs');
+const address = 'tcp://127.0.0.1:12345';
+let i = 1;
+const run = async () => {    
+    const fileName = "server.json";
+    let keyPair = null;
+    if (fs.existsSync(fileName)) {
+        keyPair = JSON.parse(fs.readFileSync("server.json"));
+    } else {
+        keyPair = zmq.curveKeyPair();
+        fs.writeFileSync("server.json", JSON.stringify(keyPair, null, 4));    
+    }
+    var dealer = new zmq.Dealer({
+        curveServer: true,
+        curvePublicKey: keyPair.publicKey,
+        curveSecretKey: keyPair.secretKey,
+    });
+    dealer.connect(address);
+    setInterval(() => {
+        let msg = [[ "weatherinfo", i ]]; // + dealer.identity
+        i += 1;
+        console.log('send', msg);
+        dealer.send(msg);
+    }, 300);
+    console.log("receiving...");
+    for await (const [msg] of dealer) {
+        console.log("received: %s", msg.toString())
+    }
+}
+run();