Connectrum

Stratum (electrum-server) Client Protocol library

Uses python3 to be a client to the Electrum server network. It makes heavy use of asyncio module and newer Python 3.5 keywords such as await and async.

For non-server applications, you can probably find all you need already in the standard Electrum code and command line.

Python 3.5 is absolutely required for this code. It will never work on earlier versions of Python.

Features

• can connect via Tor, SSL, proxied or directly
• filter lists of peers by protocol, .onion name
• manage lists of Electrum servers in simple JSON files.
• fully asynchronous design, so can connect to multiple at once
• a number of nearly-useful examples provided

Examples

In examples you will find a number little example programs.

• cli.py send single commands, plan is to make this an interactive REPL
• subscribe.py stream changes/events for an address or blocks.
• explorer.py implements a simplistic block explorer website
• spider.py find all Electrum servers recursively, read/write results to JSON

Version History

• 0.7.4 Add actual_connection atrribute on StratumClient with some key details
• 0.7.3 Not sure
• 0.7.2 Bugfix: port numbers vs. protocols
• 0.7.1 Python 2.6 compat fix
• 0.7.0 Reconnect broken server connections automatically (after first connect).
• 0.6.0 Various pull requests from other devs integrated. Thanks to @devrandom, @ysangkok!
• 0.5.3 Documents the build/release process (no functional changes).
• 0.5.2 Make aiosocks and bottom modules optional at runtime (thanks to @BioMike)
• 0.5.1 Minor bug fixes
• 0.5.0 First public release.

TODO List

• be more robust about failed servers, reconnect and handle it.
• connect to a few (3?) servers and compare top block and response times; pick best
• some sort of persistant server list that can be updated as we run
• type checking of parameters sent to server (maybe)?
• lots of test code
• an example that finds servers that do SSL with self-signed certificate
• an example that fingerprints servers to learn what codebase they use
• some bitcoin-specific code that all clients would need; like block header to hash