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#!/usr/bin/python
# Server that will accept connections from a Vim channel.
# Run this server and then in Vim you can open the channel:
# :let handle = connect('localhost:8765', 'json')
#
# Then Vim can send requests to the server:
# :let response = sendexpr(handle, 'hello!')
#
# And you can control Vim by typing a JSON message here, e.g.:
# ["ex","echo 'hi there'"]
#
# See ":help channel-demo" in Vim.
import SocketServer
import json
import socket
import sys
import threading
thesocket = None
class ThreadedTCPRequestHandler(SocketServer.BaseRequestHandler):
def handle(self):
print "=== socket opened ==="
global thesocket
thesocket = self.request
while True:
try:
data = self.request.recv(4096)
except socket.error:
print "=== socket error ==="
break
except IOError:
print "=== socket closed ==="
break
if data == '':
print "=== socket closed ==="
break
print "received: {}".format(data)
try:
decoded = json.loads(data)
except ValueError:
print "json decoding failed"
decoded = [0, '']
if decoded[1] == 'hello!':
response = "got it"
else:
response = "what?"
encoded = json.dumps([decoded[0], response])
print "sending {}".format(encoded)
self.request.sendall(encoded)
thesocket = None
class ThreadedTCPServer(SocketServer.ThreadingMixIn, SocketServer.TCPServer):
pass
if __name__ == "__main__":
HOST, PORT = "localhost", 8765
server = ThreadedTCPServer((HOST, PORT), ThreadedTCPRequestHandler)
ip, port = server.server_address
# Start a thread with the server -- that thread will then start one
# more thread for each request
server_thread = threading.Thread(target=server.serve_forever)
# Exit the server thread when the main thread terminates
server_thread.daemon = True
server_thread.start()
print "Server loop running in thread: ", server_thread.name
print "Listening on port {}".format(PORT)
while True:
typed = sys.stdin.readline()
if "quit" in typed:
print "Goodbye!"
break
if thesocket is None:
print "No socket yet"
else:
print "sending {}".format(typed)
thesocket.sendall(typed)
server.shutdown()
server.server_close()
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