# obspy.clients.seedlink.client.slstate.SLState

class `SLState`

  Bases: `builtins.object`

  Class to manage SeedLinkConnection state.

  Variables: | SL_DOWN Connection state down. SL_UP Connection state up. SL_DATA Connection state data. state Connection state. NO_QUERY INFO query state NO_QUERY. INFO_QUERY INFO query state INFO_QUERY. KEEP_ALIVE_QUERY INFO query state KEEP_ALIVE_QUERY. query_mode INFO query state. BUFSIZE Size of receiving buffer (default is 8192). databuf Data buffer for received packets. recptr Receive pointer for databuf. sendptr Send pointer for databuf. expect_info Flag to indicate if an INFO response is expected. netto_trig Network timeout trigger.netto_trig netdly_trig Network re-connect delay trigger. keepalive_trig Send keepalive trigger. previous_time Time stamp of last state update. netto_time Network timeout time stamp. netdly_time Network re-connect delay time stamp. keepalive_time Keepalive time stamp.

  Attributes

  `BUFSIZE` | int(x=0) -> integer
  `INFO_QUERY` | int(x=0) -> integer
  `KEEP_ALIVE_QUERY` | int(x=0) -> integer
  `NO_QUERY` | int(x=0) -> integer
  `SL_DATA` | int(x=0) -> integer
  `SL_DOWN` | int(x=0) -> integer
  `SL_UP` | int(x=0) -> integer
  `__dict__` |
  `__doc__` | str(object=’‘) -> str
  `__module__` | str(object=’‘) -> str
  `__weakref__` | list of weak references to the object (if defined)

  Public Methods

  `append_bytes` | Appends bytes to the receive buffer after the last received data.
  `bytes_remaining` | Return number of bytes remaining in receiving buffer.
  `get_packet` | Returns last received packet.
  `increment_send_pointer` | Increments the send pointer by size of one packet.
  `is_end` | Check for SeedLink END packet.
  `is_error` | Check for SeedLink ERROR packet.
  `pack_data_buffer` | Packs the buffer by removing all sent packets and shifting remaining
  `packet_available` | Check for full packet available to send.
  `packet_is_info` | Check for SeedLink INFO packet.

  Special Methods

  `__dir__` | default dir() implementation
  `__format__` | default object formatter
  `__init__` |
  `__new__` | Create and return a new object.
  `__reduce__` | helper for pickle
  `__reduce_ex__` | helper for pickle
  `__sizeof__` | size of object in memory, in bytes
  `__subclasshook__` | Abstract classes can override this to customize issubclass().

### Thank you!

We would like to thank our contributors, whose efforts make this software what it is. These people have helped by writing code and documentation, and by testing. They have created and maintained this product, its associated libraries and applications, our build tools and our web sites.

#### Contributors

- Ackerley, Nick
- Allgeyer, Sebastien
- Ammon, Charles J.
- Antunes, Emanuel
- Arnarsson, Ólafur St.
- Bank, Markus
- Barsch, Robert
- Behr, Yannik
- Bernardi, Fabrizio
- Bernauer, Felix
- Bes de Berc, Maxime
- Beyreuther, Moritz
- Boltz, Shawn
- Bonaimé, Sébastien
- Carothers, Lloyd
- Chamberlain, Calum
- Chambers, Derrick
- Chen, Zhao
- Clark, Adam
- Danecek, Peter
- Egdorf, Sven
- Engels, Fabian
- Ermert, Laura
- Eulenfeld, Tom

- Fabbri, Tommaso
- Falco, Nicholas
- Fee, Jeremy
- Grellier, Clément
- Grunberg, Marc
- Hammer, Conny
- Heimann, Sebastian
- Heiniger, Lukas
- Hope, Gaute
- Igel, Heiner
- Inza, Adolfo
- Isken, Marius
- Ketchum, David
- Koymans, Mathijs
- Kremers, Simon
- Kress, Victor
- Krieger, Lars
- Krischer, Lion
- Kula, Damian
- Käufl, Paul
- Köhler, Andreas
- Lecocq, Thomas
- Leeman, John
- Legovini, Paride

- Lesage, Philippe
- Li, Yulin
- Lomax, Anthony
- Lopes, Rui L.
- MacCarthy, Jonathan
- Maggi, Alessia
- Martin, Henri
- Medlin, Andrew
- Megies, Tobias
- Meschede, Matthias
- Michelini, Alberto
- Miller, Nathaniel C.
- Morgenstern, Bernhard
- Nof, Ran Novitsky
- Panning, Mark P.
- Parker, Tom
- Pestourie, Romain
- Rapagnani, Giovanni
- Reyes, Celso
- Ringler, Adam
- Rothenhäusler, Nicolas
- Russo, Emiliano
- Sales de Andrade, Elliott

- Satriano, Claudio
- Saul, Joachim
- Scheingraber, Chris
- Schneider, Simon
- Sippl, Christian
- Snoke, Arthur
- Stange, Stefan
- Stähler, Simon C.
- Sullivan, Benjamin
- Tian, Dongdong
- Trabant, Chad
- Trani, Luca
- Uieda, Leonardo
- Walker, Andrew
- Walther, Marcus
- Wassermann, Joachim
- Williams, Mark C.
- Winkelman, Andrew
- Zaccarelli, Riccardo
- Zad, Seyed Kasra Hosseini
- Zhu, Lijun
- van Driel, Martin
- van Wijk, Kasper

#### Funds

ObsPy was partially funded by the

- German Science Foundation (DFG) via grant DFG IG 16/9-1
- German Ministry for Education and Research (BMBF), GEOTECHNOLOGIEN grant 03G0646H.
- NERA project (Network of European Research Infrastructures for Earthquake Risk Assessment and Mitigation) under the European Community's Seventh Framework Programme (FP7/2007-2013) grant agreement n° 262330
- Leibniz Institute for Applied Geophysics (LIAG)
- VERCE EU-FP7 project (no. 283543)