From 816bfa54afd50059d781a9da5dc953611b9fdc66 Mon Sep 17 00:00:00 2001
From: Adam Soltys <asoltys@gmail.com>
Date: Wed, 13 May 2020 14:31:44 -0700
Subject: use ws instead of socket.io

---
 lib/rates.js    |   2 +-
 lib/sockets.js  |  81 +++++++++-------
 package.json    |   2 -
 routes/users.js |   3 +-
 yarn.lock       | 283 +-------------------------------------------------------
 5 files changed, 51 insertions(+), 320 deletions(-)

diff --git a/lib/rates.js b/lib/rates.js
index 702e586e..b6c38a50 100644
--- a/lib/rates.js
+++ b/lib/rates.js
@@ -29,7 +29,7 @@ let fetchRates;
 })();
 
 setInterval(() => {
-  socket.emit("rates", app.get("rates"));
+  broadcast("rates", app.get("rates"));
 }, 1000);
 
 setInterval(() => {
diff --git a/lib/sockets.js b/lib/sockets.js
index 6679b2cf..16f42214 100644
--- a/lib/sockets.js
+++ b/lib/sockets.js
@@ -1,50 +1,61 @@
 const jwt = require("jsonwebtoken");
-const io = require("socket.io");
+const uuidv4 = require("uuid/v4");
+const WebSocket = require("ws");
+
+wss = new WebSocket.Server({ clientTracking: false, noServer: true });
 
 /* eslint-disable-next-line */
 const pick = (O, ...K) => K.reduce((o, k) => ((o[k] = O[k]), o), {});
-sids = {};
+sockets = {};
 
-socket = io(server, { origins: "*:*" });
-emit = (username, msg, data) => {
+emit = (username, type, data) => {
   if (data.username !== undefined) data = pick(data, ...whitelist);
 
-  if (!sids[username]) return;
-  sids[username].map((sid, i) => {
-    try {
-      socket.to(sid).emit(msg, data);
-    } catch (e) {
-      sids[username].splice(i, 1);
-    }
-  });
+  if (!sockets[username]) return;
+  for (id in sockets[username]) {
+    const ws = sockets[username][id];
+    ws.send(JSON.stringify({ type, data }));
+  } 
 };
 
-socket.use((socket, next) => {
-  try {
-    let token = socket.handshake.query.token;
-    let user = jwt.decode(token).username;
-    socket.request.user = user;
-    sids[user] ? sids[user].push(socket.id) : (sids[user] = [socket.id]);
-    sids[socket.id] = user;
-  } catch (e) {
-    l.error("error creating socket", e);
-  }
-  next();
+broadcast = (type, data) => {
+  for (const username in sockets) {
+    for (const id in sockets[username]) {
+      const ws = sockets[username][id];
+      ws.send(JSON.stringify({ type, data }));
+    } 
+  };
+}
+
+server.on("upgrade", function (request, socket, head) {
+  wss.handleUpgrade(request, socket, head, function (ws) {
+    wss.emit("connection", ws, request);
+  });
 });
 
-socket.sockets.on("connect", async socket => {
-  socket.emit("connected");
-  if (app.get("rates")) socket.emit("rate", app.get("rates").ask);
-  socket.on("getuser", async (data, callback) => {
-    let { user } = socket.request;
-    l.info("socket open", user);
-    callback(await getUser(user));
+const names = {};
+
+wss.on("connection", function (ws) {
+  const id = uuidv4();
+
+  ws.on("message", async (token) => {
+    try {
+      const username = jwt.decode(token).username;
+      if (!sockets[username]) sockets[username] = {};
+      sockets[username][id] = ws;
+      names[id] = username;
+
+      ws.send(JSON.stringify({ type: "rates", data: app.get("rates") }));
+      ws.send(JSON.stringify({ type: "login", data: await getUser(username) }));
+      l.info("socket open", username);
+    } catch (e) {
+      l.error("problem opening socket", e.message);
+    }
   });
 
-  socket.on("disconnect", s => {
-    let user = sids[socket.id];
-    l.info("socket closed", user);
-    sids[user].splice(sids[user].indexOf(socket.id), 1);
-    delete sids[socket.id];
+  ws.on("close", function () {
+    const username = names[id];
+    delete sockets[username][id];
+    l.info("socket closed", username);
   });
 });
diff --git a/package.json b/package.json
index b434e051..881097ce 100644
--- a/package.json
+++ b/package.json
@@ -36,8 +36,6 @@
     "pino": "^5.17.0",
     "request": "~2.88.0",
     "sequelize": "^5.21.3",
-    "socket.io": "^2.2.0",
-    "socket.io-client": "^2.2.0",
     "uuid": "^3.3.2",
     "ws": "^7.1.2",
     "zeromq": "^5.1.0"
diff --git a/routes/users.js b/routes/users.js
index 6e0d13d1..9089b435 100644
--- a/routes/users.js
+++ b/routes/users.js
@@ -1,7 +1,6 @@
 const axios = require("axios");
 const bcrypt = require("bcrypt");
 const jwt = require("jsonwebtoken");
-const uuidv4 = require("uuid/v4");
 const authenticator = require("otplib").authenticator;
 
 const pick = (O, ...K) => K.reduce((o, k) => ((o[k] = O[k]), o), {});
@@ -231,7 +230,7 @@ app.post("/user", auth, async (req, res) => {
     if (user.username !== username && exists) {
       return res.status(500).send("Username taken");
     } else {
-      sids[username] = sids[user.username];
+      sockets[username] = sockets[user.username];
       user.username = username;
       addresses[user.address] = username;
       addresses[user.liquid] = user.username;
diff --git a/yarn.lock b/yarn.lock
index ace66b87..a2ffb908 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -323,7 +323,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"accepts@npm:~1.3.4, accepts@npm:~1.3.5, accepts@npm:~1.3.7":
+"accepts@npm:~1.3.5, accepts@npm:~1.3.7":
   version: 1.3.7
   resolution: "accepts@npm:1.3.7"
   dependencies:
@@ -333,13 +333,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"after@npm:0.8.2":
-  version: 0.8.2
-  resolution: "after@npm:0.8.2"
-  checksum: 2/ac1e164f625a9715daaef092bdc1ceb11d053d95d343d83315c10eced4fdc4ead499f7c25d433aabc26f32cd736370551998a6ce7ab9ad9c2d978cca41852858
-  languageName: node
-  linkType: hard
-
 "agent-base@npm:4, agent-base@npm:^4.2.0, agent-base@npm:^4.3.0":
   version: 4.3.0
   resolution: "agent-base@npm:4.3.0"
@@ -518,13 +511,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"arraybuffer.slice@npm:~0.0.7":
-  version: 0.0.7
-  resolution: "arraybuffer.slice@npm:0.0.7"
-  checksum: 2/d7775846f098c6294029a34fad1dd19e6b90f388eb19d6181ff9265fd9ffae4f5f7b243d3b39275b7ffc7ddc7923ae1df83dff720a0001dc1fb740ea4e3a458c
-  languageName: node
-  linkType: hard
-
 "ascli@npm:~1":
   version: 1.0.1
   resolution: "ascli@npm:1.0.1"
@@ -635,13 +621,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"backo2@npm:1.0.2":
-  version: 1.0.2
-  resolution: "backo2@npm:1.0.2"
-  checksum: 2/72f19a0fd2b573f5504adf1f2e74e7658eec000e7732ebd5f622b6b1d520187277a5e8310787906455d02fcf915f35c5c48e54c997bed1a60b95355db8f2ccab
-  languageName: node
-  linkType: hard
-
 "balanced-match@npm:^1.0.0":
   version: 1.0.0
   resolution: "balanced-match@npm:1.0.0"
@@ -658,20 +637,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"base64-arraybuffer@npm:0.1.5":
-  version: 0.1.5
-  resolution: "base64-arraybuffer@npm:0.1.5"
-  checksum: 2/9ae66a41b880831fbac1bdb9d1ca79d60fb16209b3da6e176cc1b9336a4d34cd48e05a2b919e443bfd4b03a402b043132dc7d0fa3282c1e74baa2c2daf58fa93
-  languageName: node
-  linkType: hard
-
-"base64id@npm:2.0.0":
-  version: 2.0.0
-  resolution: "base64id@npm:2.0.0"
-  checksum: 2/91517053496f8f6ef5c4f0dc8ea8cda43fe0ff9e268e0309f67da438fb680fc7df8bfba10e5d363d63f33e74babda0ac53d2e821e6d158a840d4091df1c16099
-  languageName: node
-  linkType: hard
-
 "bcrypt-pbkdf@npm:^1.0.0":
   version: 1.0.2
   resolution: "bcrypt-pbkdf@npm:1.0.2"
@@ -698,15 +663,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"better-assert@npm:~1.0.0":
-  version: 1.0.2
-  resolution: "better-assert@npm:1.0.2"
-  dependencies:
-    callsite: 1.0.0
-  checksum: 2/bc6a68fcd5da7727878e35961e917132058796b28119dcaf7a6f1d88f6c87d37ffd256d13cd7f0a4e332abac35dd1b4c8a09be43edfcfd1f7939915114fe81f0
-  languageName: node
-  linkType: hard
-
 "bigi@npm:^1.1.0, bigi@npm:^1.4.0":
   version: 1.4.2
   resolution: "bigi@npm:1.4.2"
@@ -854,13 +810,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"blob@npm:0.0.5":
-  version: 0.0.5
-  resolution: "blob@npm:0.0.5"
-  checksum: 2/41fbd9f746890eb809ab232995abac41afeb265ba37a5f35694dee36a906d63ab9626aff3db3868d18ec39e826878c93913cd0a3258cd1c310d451dff369658c
-  languageName: node
-  linkType: hard
-
 "bluebird@npm:^3.5.0":
   version: 3.7.2
   resolution: "bluebird@npm:3.7.2"
@@ -1066,13 +1015,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"callsite@npm:1.0.0":
-  version: 1.0.0
-  resolution: "callsite@npm:1.0.0"
-  checksum: 2/5940b23533433f4886dea106cdb16d8a511b36ebaf2ac0bbe0adae547a4259f142d37074f864e12f424927b50cf364fffd1fd75d45a62a622d22984d2375e859
-  languageName: node
-  linkType: hard
-
 "camelcase@npm:5.0.0, camelcase@npm:^5.0.0":
   version: 5.0.0
   resolution: "camelcase@npm:5.0.0"
@@ -1348,8 +1290,6 @@ __metadata:
     prettier: ^1.18.2
     request: ~2.88.0
     sequelize: ^5.21.3
-    socket.io: ^2.2.0
-    socket.io-client: ^2.2.0
     uuid: ^3.3.2
     ws: ^7.1.2
     zeromq: ^5.1.0
@@ -1411,27 +1351,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"component-bind@npm:1.0.0":
-  version: 1.0.0
-  resolution: "component-bind@npm:1.0.0"
-  checksum: 2/afbea09480c570b50fb86d8b4bee5d8b4809c667d8a7072cab0d48832f2cb9ebd62bf61b28722f1560cf7a2b0c2c171f8ef120229ec88e9cf332833cbf2779e8
-  languageName: node
-  linkType: hard
-
-"component-emitter@npm:1.2.1":
-  version: 1.2.1
-  resolution: "component-emitter@npm:1.2.1"
-  checksum: 2/faa45682ad4f3796803e254793f843b54c4f10f9fd8d23a1ed37a174dd2cc847a48dd2b6d016aa55465192d752ec2dada71391ac502ce61202816973678587bb
-  languageName: node
-  linkType: hard
-
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-  version: 0.0.3
-  resolution: "component-inherit@npm:0.0.3"
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-  languageName: node
-  linkType: hard
-
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   version: 2.0.18
   resolution: "compressible@npm:2.0.18"
@@ -1661,7 +1580,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"debug@npm:*, debug@npm:4, debug@npm:4.1.1, debug@npm:^4.1.0, debug@npm:^4.1.1, debug@npm:~4.1.0":
+"debug@npm:*, debug@npm:4, debug@npm:4.1.1, debug@npm:^4.1.0, debug@npm:^4.1.1":
   version: 4.1.1
   resolution: "debug@npm:4.1.1"
   dependencies:
@@ -1679,7 +1598,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"debug@npm:3.1.0, debug@npm:=3.1.0, debug@npm:~3.1.0":
+"debug@npm:3.1.0, debug@npm:=3.1.0":
   version: 3.1.0
   resolution: "debug@npm:3.1.0"
   dependencies:
@@ -1972,52 +1891,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"engine.io-client@npm:~3.4.0":
-  version: 3.4.0
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-    component-inherit: 0.0.3
-    debug: ~4.1.0
-    engine.io-parser: ~2.2.0
-    has-cors: 1.1.0
-    indexof: 0.0.1
-    parseqs: 0.0.5
-    parseuri: 0.0.5
-    ws: ~6.1.0
-    xmlhttprequest-ssl: ~1.5.4
-    yeast: 0.1.2
-  checksum: 2/e293d8dc9ce19276654aa095ecf6d1e10a4b1216fceba2ccf772e0e8ed0431a80ccbbc38809407d7a13f36cf8ca59b04bd5833e926079805c5ed9fc4a8e918b6
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-"engine.io-parser@npm:~2.2.0":
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-    arraybuffer.slice: ~0.0.7
-    base64-arraybuffer: 0.1.5
-    blob: 0.0.5
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-  checksum: 2/cd467b8b12efa9db52ffb6691ef9ce8a67016cef83b61d548a1fb223c5a39c3b3dcee631deebc10d3c20a94a59fc58c63c70cee549ef947e85550ba5e8aee0af
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-"engine.io@npm:~3.4.0":
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-  dependencies:
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-    base64id: 2.0.0
-    cookie: 0.3.1
-    debug: ~4.1.0
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-    ws: ^7.1.2
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   resolution: "enquirer@npm:2.3.5"
@@ -2717,22 +2590,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"has-binary2@npm:~1.0.2":
-  version: 1.0.3
-  resolution: "has-binary2@npm:1.0.3"
-  dependencies:
-    isarray: 2.0.1
-  checksum: 2/1a80bcdcef9336c94c0cdd61b9adff66714a964c956bb6eac6732cdb283dcf507841c56d7d186708c36fe2c6fc3d7b12a63f44fa19dc8ffd61c12e76a2e2f136
-  languageName: node
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-  version: 1.1.0
-  resolution: "has-cors@npm:1.1.0"
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-  languageName: node
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   version: 3.0.0
   resolution: "has-flag@npm:3.0.0"
@@ -2938,13 +2795,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"indexof@npm:0.0.1":
-  version: 0.0.1
-  resolution: "indexof@npm:0.0.1"
-  checksum: 2/23dd379c2dec86d0f2d06d96b085bc2d30776d4222b6bea188dc02a742fcb7cab103da94bd1386fdff4c223b3948e7b165e1f5a6f747becc1c306c1f73468f4e
-  languageName: node
-  linkType: hard
-
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   version: 1.12.0
   resolution: "inflection@npm:1.12.0"
@@ -3191,13 +3041,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"isarray@npm:2.0.1":
-  version: 2.0.1
-  resolution: "isarray@npm:2.0.1"
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-  languageName: node
-  linkType: hard
-
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   version: 1.0.0
   resolution: "isarray@npm:1.0.0"
@@ -4103,13 +3946,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"object-component@npm:0.0.3":
-  version: 0.0.3
-  resolution: "object-component@npm:0.0.3"
-  checksum: 2/ae3417629f7da6f40dc2e50636f40ee33cd2f317cf8744204c24c505e78f9290e36d3ed2812a38e248b34e43982ae8e6e35ed6602655c736fe37de5e39d6d992
-  languageName: node
-  linkType: hard
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 "object-inspect@npm:^1.7.0":
   version: 1.7.0
   resolution: "object-inspect@npm:1.7.0"
@@ -4309,24 +4145,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"parseqs@npm:0.0.5":
-  version: 0.0.5
-  resolution: "parseqs@npm:0.0.5"
-  dependencies:
-    better-assert: ~1.0.0
-  checksum: 2/46444c9a5bf2ec301bd61cc6020cac30a4e85e58f6d49176aa8773247940029b2df9cac3eabc498810d0c79aad2dcb9f28820fbf9bfdfd067eb0d16ee0c32d51
-  languageName: node
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-"parseuri@npm:0.0.5":
-  version: 0.0.5
-  resolution: "parseuri@npm:0.0.5"
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-  checksum: 2/5a16cd5292be2c99558efee22e7dca8f35e88612cc9d3be944b1c826c78ecd7bacfa1e18cea9157b6c3ad4bf4c72be08ccba592a19346bf216207a85d181993b
-  languageName: node
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   resolution: "parseurl@npm:1.3.3"
@@ -5377,71 +5195,6 @@ resolve@^1.12.0:
   languageName: node
   linkType: hard
 
-"socket.io-adapter@npm:~1.1.0":
-  version: 1.1.2
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-  dependencies:
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-    base64-arraybuffer: 0.1.5
-    component-bind: 1.0.0
-    component-emitter: 1.2.1
-    debug: ~4.1.0
-    engine.io-client: ~3.4.0
-    has-binary2: ~1.0.2
-    has-cors: 1.1.0
-    indexof: 0.0.1
-    object-component: 0.0.3
-    parseqs: 0.0.5
-    parseuri: 0.0.5
-    socket.io-parser: ~3.3.0
-    to-array: 0.1.4
-  checksum: 2/e38863a3e26e566cda5459ae83be08dc5036d69ad63dd7ced98bd489e0539281ba683076d380a14e5bcdd939aca5ac1a701219e8e2cedb97459d2245e371b07a
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-    debug: ~3.1.0
-    isarray: 2.0.1
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-  version: 2.3.0
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-    debug: ~4.1.0
-    engine.io: ~3.4.0
-    has-binary2: ~1.0.2
-    socket.io-adapter: ~1.1.0
-    socket.io-client: 2.3.0
-    socket.io-parser: ~3.4.0
-  checksum: 2/12368e2b053bbedc1b2f3735cdb2aaeca446314ab2ff72dda3aebc56b74502a2b92abf3c2f1aaa9f98a287f4e390a52fccd7846f09d12353a5691452303fa723
-  languageName: node
-  linkType: hard
-
 "socks-proxy-agent@npm:^4.0.1":
   version: 4.0.2
   resolution: "socks-proxy-agent@npm:4.0.2"
@@ -5828,13 +5581,6 @@ resolve@^1.12.0:
   languageName: node
   linkType: hard
 
-"to-array@npm:0.1.4":
-  version: 0.1.4
-  resolution: "to-array@npm:0.1.4"
-  checksum: 2/c25a6d5e97705b08c8259eb92b31532d22d9be32fbd9f8e9fce9bc4a0e687d55284bfd51b3ef00e5cc06770312bffb675065468bf62630f6813d0e8ef8231df5
-  languageName: node
-  linkType: hard
-
 "to-regex-range@npm:^5.0.1":
   version: 5.0.1
   resolution: "to-regex-range@npm:5.0.1"
@@ -6232,15 +5978,6 @@ resolve@^1.12.0:
   languageName: node
   linkType: hard
 
-"ws@npm:~6.1.0":
-  version: 6.1.4
-  resolution: "ws@npm:6.1.4"
-  dependencies:
-    async-limiter: ~1.0.0
-  checksum: 2/74c224573621110380d29e4c51b92eaec5f87c2fc779eb48873a60704e2ddebcaaadaa2ded3bc90a9b01bc453594dae7118c3c279c6ce6340334eb92c8ff04c2
-  languageName: node
-  linkType: hard
-
 "xdg-basedir@npm:^3.0.0":
   version: 3.0.0
   resolution: "xdg-basedir@npm:3.0.0"
@@ -6248,13 +5985,6 @@ resolve@^1.12.0:
   languageName: node
   linkType: hard
 
-"xmlhttprequest-ssl@npm:~1.5.4":
-  version: 1.5.5
-  resolution: "xmlhttprequest-ssl@npm:1.5.5"
-  checksum: 2/8bb71857be6fa5536a12998b5a65c73f6f86d38404a08e373d16cbb96f334148b0afe0041bc91a9cff817552a6a1f855806145a7bf0ac0c4a7beaf40d9f5f282
-  languageName: node
-  linkType: hard
-
 "xregexp@npm:2.0.0":
   version: 2.0.0
   resolution: "xregexp@npm:2.0.0"
@@ -6357,13 +6087,6 @@ resolve@^1.12.0:
   languageName: node
   linkType: hard
 
-"yeast@npm:0.1.2":
-  version: 0.1.2
-  resolution: "yeast@npm:0.1.2"
-  checksum: 2/ce326a71c7f25059ef7581121104c21d2837511a95cb44604f9e1825c5722f5b65324fb0b1d20bcfe3975efe45e418106100aa0d0e9fc502f90f3d07d059e177
-  languageName: node
-  linkType: hard
-
 "zeromq@npm:^5.1.0":
   version: 5.2.0
   resolution: "zeromq@npm:5.2.0"
-- 
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