1. Elektron Real-time NEWS over Web Socket
REUTERS / Firstname Lastname
Elektron Real-time NEWS over Web Socket
David M Thomas
Developer Advocate - Platform APIs

2. Thomson Reuters Elektron Real Time Content
News
Real Time News
News Analytics
Sentiment Indices
Market
Exchange Traded
OTC
Cash
Derivatives
Geography
Americas
EMEA
APAC
Frontier
Asset Class
Equities
Options
Fixed Income
Futures
Money Markets
Indices
Commodities & Energy
Economic Indicators FX
Third Party
Broker Data
TradeWeb
Market Axess
ICAP
BGC
Tullet
Dealing & Matching
Tradition
GFI
WM Fixings
Consolidated real time feeds from over 500 exchange-traded and OTC markets
EMA Java for Beginner

3. Thomson Reuters Elektron Real Time feed
Thomson Reuters Elektron Real Time is a low-latency global data feed that delivers full tick and depth-of-market data
It is distributed via:
Eikon
Web Socket
Elektron Data Platform
EMA
ETA
Elektron SDK
TREP
EMA Java for Beginner

4. Connection management Yes Must be implemented by the application
WebSocket API vs EMA
Feature
Elektron Message API
WebSocket API
Connection management
Timeouts, reconnection, multiple servers…
Yes
Must be implemented by the application
Consumer
Multi domains, batch, views, posts…
Provider
Interactive, Non Interactive
In future versions
Configuration files No
Performance Interactive, Non Interactive
High performance
Good performance
Programming languages
C++ and Java
All languages with WebSocket & Json capabilities
#TRDevelopers

5. All Requests and Responses use a simplified JSON format: “tr_json2”
Market Price Request
All Requests and Responses use a simplified JSON format: “tr_json2”
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6. Market Price Response - Refresh
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7. Market Price Response - Update
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8. MRN_STORY Request
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9. MRN_STORY Response - Refresh
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10. MRN_STORY Response - Update
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11. MRN_STORY Response – Update Payload
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12. Fragment Processing FRAGMENT field holds the News content FRAG_NUM
Gzip compressed.
For WebSocket API this result is Base64 Encoded
FRAG_NUM
The Fragment number – Used when News Items that span multiple fragments
Any further fragments are delivered in subsequent updates
All fragments for a News item must be concatenated before it can be uncompressed.
TOT_SIZE
Gives the compressed size of the complete News Item
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13. Fragment Processing GUID Field News Item is complete when:
Identifies unique News Items across Updates
News Item is complete when:
FRAGMENT field length == TOT_SIZE
Otherwise Start concatenating until:
LENGTH OF CONCATENATED FRAGMENTS == TOT_SIZE
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14. MRN_TRNA Request
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15. MRN_TRNA Response - Refresh
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16. MRN_TRNA Response – Refresh Payload
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17. MRN_TRNA Response - Update
#TRDevelopers

18. MRN_TRNA Response – Update Payload
#TRDevelopers

19. WebSocket API TRY IT NOW! DOCUMENTATION
Available from the Developer Portal

20. WebSocket API Examples
WebSocket API Sample Applications available from the Developer Portal
Also available under streamingtools in the latest ADS releases

21. Demonstration: From MarketPrice to MRN
MarketPriceExample.cs
market_price.js Demonstrate Real-time NEWS using these simple MarketPrice examples with appropriate changes.