# protocol-version

Carries the VERSION header field defined by RFC 5424 Section 6.2.2.

This property belongs to the Message Properties group.

Name:

  protocol-version

Category:

  Message Properties

Type:

  string

## Description

Contains the RFC 5424 Section 6.2.2 `VERSION` header field that signals which syslog message format the sender used. RFC 5424 assigns `1` to the standard defined in the specification and reserves future numbers for later revisions. When rsyslog consumes data without a native syslog header, this property reflects the configured or inferred version value for that input, commonly `1`.

## Usage

    template(name="example" type="list") {
        property(name="protocol-version")
    }

## See also

See rsyslog Properties for the category overview.

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Contributing: Source & docs: rsyslog source project

© 2008–2025 Rainer Gerhards and others. Licensed under the Apache License 2.0.