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by logotype
532 days ago
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xml/xsd is preferred as the schema definition, but the format "on the wire" is mostly tagvalue ASCII over TCP sockets these days (or binary using SBE if its latency sensitive e.g. HFT). JSON is relatively new in the FIX world. Some applications could encode fix in the front-end/browser and I can see some advantages of using FIX JSON in those scenarios and that's why we added support for it in FIXParser https://fixparser.dev |
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