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-rwxr-xr-xexamples/asyncio-ssh-python-embed.py56
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+#!/usr/bin/env python
+"""
+Example of running the Python REPL through an SSH connection in an asyncio process.
+This requires Python 3, asyncio and asyncssh.
+
+Run this example and then SSH to localhost, port 8222.
+"""
+import asyncio
+import logging
+
+import asyncssh
+
+from ptpython.contrib.asyncssh_repl import ReplSSHServerSession
+
+logging.basicConfig()
+logging.getLogger().setLevel(logging.INFO)
+
+
+class MySSHServer(asyncssh.SSHServer):
+ """
+ Server without authentication, running `ReplSSHServerSession`.
+ """
+
+ def __init__(self, get_namespace):
+ self.get_namespace = get_namespace
+
+ def begin_auth(self, username):
+ # No authentication.
+ return False
+
+ def session_requested(self):
+ return ReplSSHServerSession(self.get_namespace)
+
+
+async def main(port: int = 8222) -> None:
+ """
+ Example that starts the REPL through an SSH server.
+ """
+ # Namespace exposed in the REPL.
+ environ = {"hello": "world"}
+
+ # Start SSH server.
+ def create_server() -> MySSHServer:
+ return MySSHServer(lambda: environ)
+
+ print("Listening on :%i" % port)
+ print('To connect, do "ssh localhost -p %i"' % port)
+
+ await asyncssh.create_server(
+ create_server, "", port, server_host_keys=["/etc/ssh/ssh_host_dsa_key"]
+ )
+ await asyncio.Future() # Wait forever.
+
+
+if __name__ == "__main__":
+ asyncio.run(main())