Support Board
Date/Time: Fri, 21 Nov 2025 05:34:07 +0000
DTC JSON WebSocket: Successful Logon, but Silent Failure on Market Data Request (Rithmic)
View Count: 14
| [2025-11-21 01:59:28] |
| nach1321 - Posts: 13 |
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I am coding a local web client using the DTC Protocol (WebSocket / JSON Encoding) to read Market Data and Depth to try some visualizations. I am able to successfully Connect, Handshake, and Logon. The Heartbeats are exchanging correctly. However, when I send a Market Data Request (Type 101), the server receives the message (confirmed in the Message Log) but sends no data back.I do not receive a Market Data Reject (Type 103), nor do I receive any Market Data Snapshot (104/122) or Updates (102/113). It effectively goes silent for that specific symbol request. Configuration: Data Feed: Rithmic Direct (rithmic_v2.trading) Symbol: NQZ5.CME / NQZ25 (I have tried both the SC internal format and the Rithmic raw format). DTC Settings: Protocol v8, Encoding: JSON, TLS: Off. Current Date in Log: 2025-11-20 (Simulated Environment Date). The Log Output: 2025-11-20 20:50:56.152 | DTC client #87. ErosionTape. 127.0.0.1 | Received logon request. 2025-11-20 20:50:56.152 | DTC client #87. ErosionTape. 127.0.0.1 | Sent successful Logon response message to client. Username: . Result text: Connected to SC DTC Protocol server. Service=rithmic_v2.trading|SymbolSettings=rithmic_v2.trading 2025-11-20 20:50:56.213 | JSON data: {"Type":601,"RequestID":101,"Symbol":"NQZ25"} 2025-11-20 20:50:56.213 | JSON data: {"Type":101,"SymbolID":101,"Symbol":"NQZ25","RequestAction":1} 2025-11-20 20:50:58.155 | JSON data: {"Type":3,"NumDroppedMessages":0} Is there a specific symbol format required when requesting Rithmic data via the DTC Bridge (e.g. [M]NQ vs NQZ5.CME)? If the symbol is invalid, shouldn't I receive a Type 103 Reject message? Does the Security Definition Request (Type 601) function when bridging to Rithmic, or should I rely solely on Type 101? Thank you. |
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