Todos los libros

Profesional

Apps Acerca de Coach Iniciar sesión Empezar a leer

Quantitative Finance · Glosario

¿Qué es FIX protocol, tag-value encoding?

También llamado: FIX protocol · tag-value encoding

Definition 15.1 Low-Latency Software · Capítulo 15 — Protocols I: FIX

The FIX protocol is a standard for messages about trading (orders, executions, quotes, market data, allocations) between firms, maintained by the FIX Trading Community, with a session layer that delivers them in order and without loss. In its tag-value encoding a message is a sequence of fields tag=value, each ended by the byte SOH (value 1), where the tag is a number from the protocol’s dictionary and the value is text.

A FIX 4.2 logon as a byte string, with | standing for the SOH delimiter. BodyLength and CheckSum are computed over the spans shown; a receiver recomputes both and rejects the message if either differs.
Figure 15.1. A FIX 4.2 logon as a byte string, with | standing for the SOH delimiter. BodyLength and CheckSum are computed over the spans shown; a receiver recomputes both and rejects the message if either differs.
Leer en el capítulo →