support houndify wss (#551)

lib/utils/speech-utils.js

@@ -5,7 +5,8 @@ const sdk = require('microsoft-cognitiveservices-speech-sdk');
 const { SpeechClient } = require('@soniox/soniox-node');
 const fs = require('fs');
 const { AssemblyAI } = require('assemblyai');
-const Houndify = require('houndify');
+const crypto = require('crypto');
+const WebSocket = require('ws');
 const { GladiaClient } = require('@gladiaio/sdk');
 const {decrypt, obscureKey} = require('./encrypt-decrypt');
 const { RealtimeSession } = require('speechmatics');
@@ -660,76 +661,104 @@ const testAssemblyStt = async(logger, credentials) => {
   });
 };
 
+const _houndifySign = (nonce, accessKey) => {
+  const b64 = accessKey.replace(/-/g, '+').replace(/_/g, '/');
+  const keyBin = Buffer.from(b64, 'base64');
+  const digest = crypto.createHmac('sha256', keyBin).update(nonce).digest();
+  return digest.toString('base64').replace(/\+/g, '-').replace(/\//g, '_');
+};
+
 const testHoundifyStt = async(logger, credentials) => {
-  const {client_id, client_key, user_id, houndify_server_uri} = credentials;
+  const {client_id, client_key, houndify_server_uri} = credentials;
+  const wsUrl = houndify_server_uri || 'wss://apiws-polaris.houndify.com/v2/transcription';
 
   return new Promise((resolve, reject) => {
-    // api-server use houndify js sdk, which connect to wss server
+    const timeout = setTimeout(() => {
-    // freeswitch modules use houndify c/c++ sdk, which connect to https server
+      ws.close();
-    // we cannot test credentials on https server here.
+      reject(new Error('Houndify WS credential test timed out after 15s'));
-    if (houndify_server_uri) {
+    }, 15000);
-      return true;
-    }
 
-    try {
+    let gotTranscript = false;
-      // Read the test audio file
+    const ws = new WebSocket(wsUrl);
-      const audioBuffer = fs.readFileSync(`${__dirname}/../../data/test_audio.wav`);
 
-      // Create VoiceRequest for speech-to-text testing
+    ws.on('error', (err) => {
-      const voiceRequest = new Houndify.VoiceRequest({
+      clearTimeout(timeout);
-        // Your Houndify Client ID and Key
+      reject(new Error(`WebSocket error: ${err.message}`));
-        clientId: client_id,
+    });
-        clientKey: client_key,
 
-        // Request info
+    ws.on('close', () => {
-        requestInfo: {
+      clearTimeout(timeout);
-          UserID: user_id || 'test_user',
+      if (!gotTranscript) {
-          Latitude: 37.388309,
+        reject(new Error('Connection closed before receiving transcription'));
-          Longitude: -121.973968,
+      }
-        },
+    });
 
-        // Audio format configuration
+    ws.on('message', (data) => {
-        sampleRate: 16000,
+      const msg = data.toString();
-        enableVAD: true,
+      let parsed;
-
+      try {
-        // Response and error handlers
+        parsed = JSON.parse(msg);
-        onResponse: function(response, info) {
+      } catch (e) {
-          logger.debug({response, info}, 'Houndify STT response received');
+        return;
-          if (response && response.AllResults && response.AllResults.length > 0) {
-            resolve(response);
-          } else {
-            reject(new Error('No transcription results received'));
-          }
-        },
-
-        onError: function(err, info) {
-          logger.error({err, info}, 'Houndify STT error');
-          reject(err);
-        },
-
-        onRecordingStarted: function() {
-          logger.debug('Houndify recording started');
-        },
-
-        onRecordingStopped: function() {
-          logger.debug('Houndify recording stopped');
-        }
-      });
-
-      // Send audio in chunks (VoiceRequest automatically starts when you write data)
-      const chunkSize = 1024;
-      for (let i = 0; i < audioBuffer.length; i += chunkSize) {
-        const chunk = audioBuffer.slice(i, i + chunkSize);
-        voiceRequest.write(chunk);
       }
 
-      // End the request
+      if (parsed.error) {
-      voiceRequest.end();
+        clearTimeout(timeout);
+        ws.close();
+        return reject(new Error(`Houndify error: ${parsed.error}`));
+      }
 
-    } catch (error) {
+      if (parsed.status === 'ok' && parsed.nonce) {
-      logger.error({error}, 'Failed to create Houndify VoiceRequest');
+        const signature = _houndifySign(parsed.nonce, client_key);
-      reject(error);
+        const authMsg = JSON.stringify({
-    }
+          version: '1.1',
+          access_id: client_id,
+          signature
+        });
+        ws.send(authMsg);
+
+        const requestInfo = JSON.stringify({
+          client_id,
+          sdk: 'jambonz-api-server',
+          audiofmt: {type: 'S16LE', sample_rate: 8000},
+          model: 'base_8k',
+          segmentation: {mode: 'none'},
+          voice_activity_detection: false
+        });
+        ws.send(requestInfo);
+        return;
+      }
+
+      if (parsed.type === 'QueryIDMessage') {
+        logger.debug({query_id: parsed.query_id}, 'Houndify WS test: received QueryIDMessage');
+        try {
+          const audioBuffer = fs.readFileSync(`${__dirname}/../../data/test_audio.wav`);
+          const pcmData = audioBuffer.subarray(44);
+          const chunkSize = 3200;
+          for (let i = 0; i < pcmData.length; i += chunkSize) {
+            ws.send(pcmData.subarray(i, Math.min(i + chunkSize, pcmData.length)));
+          }
+          ws.send('Done');
+        } catch (err) {
+          clearTimeout(timeout);
+          ws.close();
+          reject(new Error(`Failed to send test audio: ${err.message}`));
+        }
+        return;
+      }
+
+      if (parsed.type === 'PartialTranscript' ||
+          parsed.type === 'FinalSegmentTranscript' ||
+          parsed.type === 'FinalTranscript') {
+        if (!gotTranscript) {
+          gotTranscript = true;
+          logger.debug({type: parsed.type, text: parsed.text}, 'Houndify WS test: received transcript');
+          clearTimeout(timeout);
+          ws.close();
+          resolve({status: 'ok', text: parsed.text || ''});
+        }
+      }
+    });
   });
 };
 

package-lock.json

@@ -34,7 +34,6 @@
         "express-rate-limit": "^7.2.0",
         "form-data": "^4.0.0",
         "helmet": "^7.1.0",
-        "houndify": "^3.1.14",
         "ibm-watson": "^9.0.1",
         "is-valid-hostname": "^1.0.2",
         "jsonwebtoken": "^9.0.2",
@@ -4759,6 +4758,7 @@
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+      "dev": true,
       "dependencies": {
         "possible-typed-array-names": "^1.0.0"
       },
@@ -5080,6 +5080,7 @@
       "version": "1.0.8",
       "resolved": "https://registry.npmjs.org/call-bind/-/call-bind-1.0.8.tgz",
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+      "dev": true,
       "license": "MIT",
       "dependencies": {
         "call-bind-apply-helpers": "^1.0.0",
@@ -5191,20 +5192,6 @@
         "ip6addr": "^0.2.2"
       }
     },
-    "node_modules/cipher-base": {
-      "version": "1.0.7",
-      "resolved": "https://registry.npmjs.org/cipher-base/-/cipher-base-1.0.7.tgz",
-      "integrity": "sha512-Mz9QMT5fJe7bKI7MH31UilT5cEK5EHHRCccw/YRFsRY47AuNgaV6HY3rscp0/I4Q+tTW/5zoqpSeRRI54TkDWA==",
-      "license": "MIT",
-      "dependencies": {
-        "inherits": "^2.0.4",
-        "safe-buffer": "^5.2.1",
-        "to-buffer": "^1.2.2"
-      },
-      "engines": {
-        "node": ">= 0.10"
-      }
-    },
     "node_modules/clean-stack": {
       "version": "2.2.0",
       "resolved": "https://registry.npmjs.org/clean-stack/-/clean-stack-2.2.0.tgz",
@@ -5380,42 +5367,6 @@
         "node": ">= 0.10"
       }
     },
-    "node_modules/create-hash": {
-      "version": "1.2.0",
-      "resolved": "https://registry.npmjs.org/create-hash/-/create-hash-1.2.0.tgz",
-      "integrity": "sha512-z00bCGNHDG8mHAkP7CtT1qVu+bFQUPjYq/4Iv3C3kWjTFV10zIjfSoeqXo9Asws8gwSHDGj/hl2u4OGIjapeCg==",
-      "license": "MIT",
-      "dependencies": {
-        "cipher-base": "^1.0.1",
-        "inherits": "^2.0.1",
-        "md5.js": "^1.3.4",
-        "ripemd160": "^2.0.1",
-        "sha.js": "^2.4.0"
-      }
-    },
-    "node_modules/create-hmac": {
-      "version": "1.1.7",
-      "resolved": "https://registry.npmjs.org/create-hmac/-/create-hmac-1.1.7.tgz",
-      "integrity": "sha512-MJG9liiZ+ogc4TzUwuvbER1JRdgvUFSB5+VR/g5h82fGaIRWMWddtKBHi7/sVhfjQZ6SehlyhvQYrcYkaUIpLg==",
-      "license": "MIT",
-      "dependencies": {
-        "cipher-base": "^1.0.3",
-        "create-hash": "^1.1.0",
-        "inherits": "^2.0.1",
-        "ripemd160": "^2.0.0",
-        "safe-buffer": "^5.0.1",
-        "sha.js": "^2.4.8"
-      }
-    },
-    "node_modules/cross-fetch": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/cross-fetch/-/cross-fetch-3.2.0.tgz",
-      "integrity": "sha512-Q+xVJLoGOeIMXZmbUK4HYk+69cQH6LudR0Vu/pRm2YlU/hDV9CiS0gKUMaWY5f2NeUH9C1nV3bsTlCo0FsTV1Q==",
-      "license": "MIT",
-      "dependencies": {
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-      }
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     "node_modules/cross-spawn": {
       "version": "7.0.6",
       "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-7.0.6.tgz",
@@ -5585,6 +5536,7 @@
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+      "dev": true,
       "dependencies": {
         "es-define-property": "^1.0.0",
         "es-errors": "^1.3.0",
@@ -5954,21 +5906,6 @@
         "es6-symbol": "^3.1.1"
       }
     },
-    "node_modules/es6-promise": {
-      "version": "4.2.8",
-      "resolved": "https://registry.npmjs.org/es6-promise/-/es6-promise-4.2.8.tgz",
-      "integrity": "sha512-HJDGx5daxeIvxdBxvG2cb9g4tEvwIk3i8+nhX0yGrYmZUzbkdg8QbDevheDB8gd0//uPj4c1EQua8Q+MViT0/w==",
-      "license": "MIT"
-    },
-    "node_modules/es6-promisify": {
-      "version": "5.0.0",
-      "resolved": "https://registry.npmjs.org/es6-promisify/-/es6-promisify-5.0.0.tgz",
-      "integrity": "sha512-C+d6UdsYDk0lMebHNR4S2NybQMMngAOnOwYBQjTOiv0MkoJMP0Myw2mgpDLBcpfCmRLxyFqYhS/CfOENq4SJhQ==",
-      "license": "MIT",
-      "dependencies": {
-        "es6-promise": "^4.0.3"
-      }
-    },
     "node_modules/es6-symbol": {
       "version": "3.1.4",
       "resolved": "https://registry.npmjs.org/es6-symbol/-/es6-symbol-3.1.4.tgz",
@@ -6324,42 +6261,6 @@
         "express": "4 || 5 || ^5.0.0-beta.1"
       }
     },
-    "node_modules/express-ws": {
-      "version": "5.0.2",
-      "resolved": "https://registry.npmjs.org/express-ws/-/express-ws-5.0.2.tgz",
-      "integrity": "sha512-0uvmuk61O9HXgLhGl3QhNSEtRsQevtmbL94/eILaliEADZBHZOQUAiHFrGPrgsjikohyrmSG5g+sCfASTt0lkQ==",
-      "license": "BSD-2-Clause",
-      "dependencies": {
-        "ws": "^7.4.6"
-      },
-      "engines": {
-        "node": ">=4.5.0"
-      },
-      "peerDependencies": {
-        "express": "^4.0.0 || ^5.0.0-alpha.1"
-      }
-    },
-    "node_modules/express-ws/node_modules/ws": {
-      "version": "7.5.10",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-7.5.10.tgz",
-      "integrity": "sha512-+dbF1tHwZpXcbOJdVOkzLDxZP1ailvSxM6ZweXTegylPny803bFhA+vqBYw4s31NSAk4S2Qz+AKXK9a4wkdjcQ==",
-      "license": "MIT",
-      "engines": {
-        "node": ">=8.3.0"
-      },
-      "peerDependencies": {
-        "bufferutil": "^4.0.1",
-        "utf-8-validate": "^5.0.2"
-      },
-      "peerDependenciesMeta": {
-        "bufferutil": {
-          "optional": true
-        },
-        "utf-8-validate": {
-          "optional": true
-        }
-      }
-    },
     "node_modules/express/node_modules/debug": {
       "version": "2.6.9",
       "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
@@ -6659,6 +6560,7 @@
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       "resolved": "https://registry.npmjs.org/for-each/-/for-each-0.3.5.tgz",
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+      "dev": true,
       "license": "MIT",
       "dependencies": {
         "is-callable": "^1.2.7"
@@ -7108,6 +7010,7 @@
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+      "dev": true,
       "dependencies": {
         "es-define-property": "^1.0.0"
       },
@@ -7153,63 +7056,6 @@
         "url": "https://github.com/sponsors/ljharb"
       }
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-    "node_modules/hash-base": {
-      "version": "3.1.2",
-      "resolved": "https://registry.npmjs.org/hash-base/-/hash-base-3.1.2.tgz",
-      "integrity": "sha512-Bb33KbowVTIj5s7Ked1OsqHUeCpz//tPwR+E2zJgJKo9Z5XolZ9b6bdUgjmYlwnWhoOQKoTd1TYToZGn5mAYOg==",
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-      "dependencies": {
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-        "readable-stream": "^2.3.8",
-        "safe-buffer": "^5.2.1",
-        "to-buffer": "^1.2.1"
-      },
-      "engines": {
-        "node": ">= 0.8"
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-    },
-    "node_modules/hash-base/node_modules/isarray": {
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-      "license": "MIT"
-    },
-    "node_modules/hash-base/node_modules/readable-stream": {
-      "version": "2.3.8",
-      "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.8.tgz",
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-      "license": "MIT",
-      "dependencies": {
-        "core-util-is": "~1.0.0",
-        "inherits": "~2.0.3",
-        "isarray": "~1.0.0",
-        "process-nextick-args": "~2.0.0",
-        "safe-buffer": "~5.1.1",
-        "string_decoder": "~1.1.1",
-        "util-deprecate": "~1.0.1"
-      }
-    },
-    "node_modules/hash-base/node_modules/readable-stream/node_modules/safe-buffer": {
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-      "license": "MIT"
-    },
-    "node_modules/hash-base/node_modules/string_decoder": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
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-      "license": "MIT",
-      "dependencies": {
-        "safe-buffer": "~5.1.0"
-      }
-    },
-    "node_modules/hash-base/node_modules/string_decoder/node_modules/safe-buffer": {
-      "version": "5.1.2",
-      "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
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@@ -7254,99 +7100,6 @@
         "node": ">=16.0.0"
       }
     },
-    "node_modules/houndify": {
-      "version": "3.1.14",
-      "resolved": "https://registry.npmjs.org/houndify/-/houndify-3.1.14.tgz",
-      "integrity": "sha512-CLeEdihgeeTtKmcnlAXK/wDKbWDDUeZpbTQLAG2Guu2AbPxyH1f+HO04jiqA/RUlwAQxPZr3YRX/LaMbkEeb6w==",
-      "license": "MIT",
-      "dependencies": {
-        "axios": "^0.21.4",
-        "create-hmac": "^1.1.6",
-        "cross-fetch": "^3.1.5",
-        "express": "^4.17.0",
-        "express-ws": "^5.0.2",
-        "https-proxy-agent": "^2.2.4",
-        "json-bigint": "^1.0.0",
-        "pako": "^1.0.5",
-        "uuid": "^3.1.0",
-        "wav": "^1.0.2",
-        "ws": "^7.5.7"
-      }
-    },
-    "node_modules/houndify/node_modules/agent-base": {
-      "version": "4.3.0",
-      "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-4.3.0.tgz",
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-      "dependencies": {
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-      },
-      "engines": {
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-      }
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-      "resolved": "https://registry.npmjs.org/axios/-/axios-0.21.4.tgz",
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-      "license": "MIT",
-      "dependencies": {
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-      "deprecated": "Please upgrade  to version 7 or higher.  Older versions may use Math.random() in certain circumstances, which is known to be problematic.  See https://v8.dev/blog/math-random for details.",
-      "license": "MIT",
-      "bin": {
-        "uuid": "bin/uuid"
-      }
-    },
-    "node_modules/houndify/node_modules/ws": {
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package.json

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