Versions

4.0

2024

The goal of SeedLink v4 is to unify and standardize the extensions added since v3.1, and to define new protocol extensions to allow for support of a new version of miniSEED and FDSN identifiers.

SeedLink v4 is designed to be compatible with v3 – any v3 client can connect to v4 server (albeit missing the new features) and any v4 client can connect to v3 server.

Planned new features include:

• Support for multiple type data types beyond miniSEED 2.

• Variable record length.

• Network and station wildcards.

• Extended DATA/FETCH/TIME commands to make time-windowed requests resumable.

• Extended time resolution (up to nanoseconds).

• User ID and token-based authentication with SSL support for accessing restricted data.

3.1

2010

• Add BATCH command to disable otherwise requires respones to modifier commands. Reduces negotiation messages, speeding up negotiations.

3.0

~2003

2.93

• Allow packet time to be included with a stream sequence number.

2.92

• Add TIME command for time windowed request

• Add INFO requests

2.5

• Support multi-station protocol mode