lang/python/ ClipboardServer

This is one step up from the EchoServer. Usage:

clipsrv # start the server
put key value # stores value in key
putf key filename # stores contents of filename in key
get key # gets what is stored in key

Source

clipsrv:

import socket

HOST = ""  # Standard loopback interface address (localhost)
PORT = 4096 # Port to listen on (non-privileged ports are > 1023)

clip = {}
with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
    s.bind((HOST, PORT))
    s.listen()
    while True:
      try:
        conn, addr = s.accept()
        with conn:
            print(f"Connected by {addr}")
            while True:
                data = conn.recv(1024)
                if not data:
                    break
                dat = data.decode()
                if "=" in dat:
                  k,v = dat.split("=",1)
                  k = k.strip()
                  v = v.strip()
                  print(f"put {len(v)} bytes at {k}")
                  clip[k] = v
                  dat = f"Stored {len(v)} bytes at {k}"
                else:
                  k = dat.strip()
                  print(f"get {k}")
                  if k in clip:
                    dat = clip[k]
                  else:
                    dat = "<no data>"
                data = dat.encode() 
                conn.sendall(data)
      except Exception as e:
        print(f"Exception {e}")

put

import socket

HOST = "127.0.0.1"  # The server's hostname or IP address
PORT = 4096  # The port used by the server

import sys
args = sys.argv[1:]
try:
  k,*vs = args
  v = " ".join(vs)
except IndexError:
  print(f"put1 key data...")
  exit(1)

with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
    s.connect((HOST, PORT))
    x = f"{k}={v}".encode()
    s.sendall(x)
    data = s.recv(1024)

print(f"Received {data!r}")

putf

import socket

HOST = "127.0.0.1"  # The server's hostname or IP address
PORT = 4096  # The port used by the server

import sys
args = sys.argv[1:]
try:
  k,vf,*xs = args
  v = open(vf).read() 
except Exception as e:
  print(e)
  print(f"putf key data...")
  exit(1)

with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
    s.connect((HOST, PORT))
    x = f"{k}={v}".encode()
    s.sendall(x)
    data = s.recv(1024)

print(f"Received: {data.decode()}")

get

#!/usr/bin/env python3

import socket

HOST = "127.0.0.1"  # The server's hostname or IP address
PORT = 4096  # The port used by the server

import sys
args = sys.argv[1:]

for arg in args:
  with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
      s.connect((HOST, PORT))
      s.sendall(arg.encode())
      data = s.recv(1024)

  print(f"Received {data.decode()}")