# obspy.clients.arclink.client.Client

class `Client`(user, host='webdc.eu', port=18002, password='', institution='Anonymous', timeout=20, dcid_keys={}, dcid_key_file=None, debug=False, command_delay=0, status_delay=0.5)

  Bases: `builtins.object`

  The ArcLink/WebDC client.

  Parameters: | user (str) The user name is used for identification with the ArcLink server. This entry is also used for usage statistics within the data centers, so please provide a meaningful user id such as your email address. host (str, optional) Host name of the remote ArcLink server (default host is `'webdc.eu'`). port (int, optional) Port of the remote ArcLink server (default port is `18002`). timeout (int, optional) Seconds before a connection timeout is raised (default is `20` seconds). password (str, optional) A password used for authentication with the ArcLink server (default is an empty string). institution (str, optional) A string containing the name of the institution of the requesting person (default is an `'Anonymous'`). dcid_keys (dict, optional) Dictionary of data center ids (DCID) and passwords used for decoding encrypted waveform requests. dcid_key_file (str, optional) Simple text configuration file containing lines of data center ids (DCIDs) and password pairs separated by a equal sign, e.g. for DCID `BIA` and password `OfH9ekhi` use `"BIA=OfH9ekhi"`. If not set, passwords found in a file called $HOME/dcidpasswords.txt will be used automatically. debug (bool, optional) Enables verbose output of the connection handling (default is `False`). command_delay (float, optional) Delay between each command send to the ArcLink server (default is `0`). status_delay (float, optional) Delay in seconds between each status request (default is `0.5` seconds).

  Notes

  The following ArcLink servers may be accessed (also see http://www.orfeus-eu.org/eida/eida_advanced_users.html; maybe partly restricted access only):

  - WebDC: webdc.eu:18001, webdc.eu:18002
  - ODC: eida.knmi.nl:18002
  - GFZ: eida.gfz-potsdam.de:18001
  - RESIF: eida.resif.fr:18001
  - INGV:
  - ETHZ: eida.ethz.ch:18001
  - BGR: eida.bgr.de:18001
  - IPGP: arclink.ipgp.fr:18001
  - USP: seisrequest.iag.usp.br:18001

  Attributes

  `__dict__` |
  `__doc__` | str(object=’‘) -> str
  `__module__` | str(object=’‘) -> str
  `__weakref__` | list of weak references to the object (if defined)
  `max_status_requests` | int(x=0) -> integer

  Public Methods

  `get_inventory` | Returns information about the available networks and stations in that particular space/time region.
  `get_metadata` | Returns poles, zeros, normalization factor and sensitivity and station coordinates for a single channel at a given time.
  `get_networks` | Returns a dictionary of available networks within the given time span.
  `get_paz` | Returns poles, zeros, normalization factor and sensitivity for a single channel at a given time.
  `get_qc` | Retrieve QC information of ArcLink streams.
  `get_routing` | Get primary ArcLink host for given network/stations/time combination.
  `get_stations` | Returns a dictionary of available stations in the given network(s).
  `get_waveforms` | Retrieves waveform data via ArcLink and returns an ObsPy Stream object.
  `save_response` | Writes response information into a file.
  `save_waveforms` | Writes a retrieved waveform directly into a file.

  Private Methods

  Warning

  Private methods are mainly for internal/developer use and their API might change without notice.

  `_Client__parse_paz` |
  `_bye` |
  `_fetch` |
  `_find_route` | Searches routing table for requested stream id and date/times.
  `_hello` |
  `_read_ln` |
  `_reconnect` |
  `_request` |
  `_write_ln` |

  Special Methods

  `__dir__` | default dir() implementation
  `__format__` | default object formatter
  `__init__` | Initializes an ArcLink client.
  `__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)