def main():
global debug, serverHost, serverPort
progname = "framedClient"
paramMap = params.parseParams(switchesVarDefaults)
server, usage, debug = paramMap["server"], paramMap["usage"], paramMap[
"debug"]
if usage:
params.usage()
try:
serverHost, serverPort = re.split(":", server)
serverPort = int(serverPort)
except:
print("Can't parse server:port from '%s'" % server)
sys.exit(1)
# for i in range(100):
# ClientThread(serverHost, serverPort, debug)
actions = ['put', 'get']
files = os.listdir(
'../piracy/') # we will grab our rando files from this dir
for i in range(100):
client = ClientThread(serverHost, serverPort, debug,
random.choice(files), '../piracy/', 'put')
client.start()
def client():
switchesVarDefaults = ( # Default switches.
(('1', '--server'), 'server', "127.0.0.1:50001"),
(('?', '--usage'), 'usage', False),
(('d', '--debug'), 'debug', False),
)
parameterMap = params.parseParams(switchesVarDefaults)
server, usage, debug = parameterMap['server'], parameterMap[
'usage'], parameterMap['debug']
if usage:
params.usage() # Calls method from given file params.
try:
serverHost, serverPort = re.split(":", server)
serverPort = int(serverPort)
except:
print("Can't parse server:port from '%s'" %
server) # Server could not be found.
sys.exit(1)
port = (serverHost, serverPort)
# create socket
listenSocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
listenSocket.connect(port)
while True:
fileName = input("> ")
fileName.strip()
if fileName == "exit": #Exit program if file name matches condition.
sys.exit(0)
else:
if not fileName:
continue
elif os.path.exists(PATH + fileName):
f = open(PATH + fileName, "rb")
contents = f.read()
if len(contents) <= 0: # Error if the file is empty.
print("Error: File %s is empty" % fileName)
continue
framedSend(listenSocket, fileName, contents, debug)
# Checks if server received the file.
status = int(listenSocket.recv(1024).decode())
if status:
print("File %s received by server." % fileName)
sys.exit(0)
else: # File not received and exit with error.
print(
"File Transfer Error: File %s was not received by server."
% fileName)
sys.exit(1)
else: # File was not found. Repeat loop.
print("File Not Found Error: File %s not found!" % fileName)
def server():
switchesVarDefaults = ( # Default switckes.
(('1', '--listenPort'), 'listenPort', 50001),
(('?', '--usage'), 'usage', False),
(('d', '--debug'), 'debug', False),
)
parameterMap = params.parseParams(switchesVarDefaults)
listenPort, debug = parameterMap['listenPort'], parameterMap['debug']
if parameterMap['usage']:
params.usage()
bindAddress = (HOST, listenPort)
# creating listening socket
listenSocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
listenSocket.bind(bindAddress)
listenSocket.listen(10) # 10 connections
print("Listening on: ", bindAddress)
# check if dir exists to receive files, if not, create it anyway, then move to it
if not os.path.exists(PATH):
os.makedirs(PATH)
os.chdir(PATH)
while 1:
connection, address = listenSocket.accept()
# if no connection or no address, get out of there
if not connection or not address:
sys.exit(1)
if not os.fork():
print("Connected by: ", address)
# receive files from client connection
try:
fileName, contents = framedReceive(connection, debug)
except:
print("Error: File transfer was not successful!")
connection.sendAll(str(0).encode())
sys.exit(1)
# save files to 'receive' dir
fileName = fileName.decode()
writeFile(connection, address, fileName, contents)
# return message of success
connection.sendall(str(1).encode())
sys.exit(0)
def main():
progname = "echoserver"
paramMap = params.parseParams(switchesVarDefaults)
debug, listenPort = paramMap['debug'], paramMap['listenPort']
if paramMap['usage']:
params.usage()
lsock = socket.socket(socket.AF_INET,
socket.SOCK_STREAM) # listener socket
bindAddr = ("127.0.0.1", listenPort)
lsock.bind(bindAddr)
lsock.listen(5)
print("listening on:", bindAddr)
while True:
sock, addr = lsock.accept()
ServerThread(sock, debug=False, path='../server-files/').start()
def main():
paramMap = params.parseParams(switchesVarDefaults)
server, usage, debug = paramMap["server"], paramMap["usage"], paramMap[
"debug"]
if usage:
params.usage()
try:
serverHost, serverPort = re.split(":", server)
serverPort = int(serverPort)
except:
print("Can't parse server:port from '%s'" % server)
sys.exit(1)
# send the filename and wait for ok response signaling server created file
filename = 'soldiers.txt'
action = 'put'
s = safe_connect(serverHost, serverPort)
print('connected')
# send filename
fs.framedSend(s, filename.encode('utf-8'), debug)
print(f'sent filename: {filename}')
# send action
fs.framedSend(s, action.encode('utf-8'))
print(f'sent action: {action}')
if action == 'put':
# send file
print('reading file')
try:
file = open(filename, 'r').read()
except:
print('problem opening file, exiting')
sys.exit(1)
print('sending file')
fs.framedSend(s, file.encode('utf-8'))
elif action == 'get':
print('getting file')
file = fs.framedReceive(s, debug).decode('utf-8')
print('writting file')
filename += '-CLIENT'
open(filename, 'w').write(file)
print('it is done.')
def main():
paramMap = params.parseParams(switchesVarDefaults)
debug, listenPort = paramMap['debug'], paramMap['listenPort']
if paramMap['usage']:
params.usage()
lsock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) # listener socket
bindAddr = ("127.0.0.1", listenPort)
lsock.bind(bindAddr)
lsock.listen(5)
print("listening on:", bindAddr)
while True:
sock, addr = lsock.accept()
if not os.fork():
print(f'child handling connection from {addr}')
while True:
# the first thing sent should be the filename
filename = fs.framedReceive(sock, debug).decode('utf-8')
print(f"filename:{filename}")
# next thing is put or get
action = fs.framedReceive(sock, debug).decode('utf-8')
if action == 'put': # now just write file
if os.access(filename, os.R_OK | os.W_OK):
print('file already exists here SORRY')
sys.exit(1)
writer = open(filename, 'w')
file = fs.framedReceive(sock, debug).decode('utf-8')
if len(file) < 1:
print('file must not be empty')
writer.write(file)
sys.exit(0) # everything is fine
elif action == 'get': # give them the file
file = open(filename).read()
fs.framedSend(sock, file.encode('utf-8'))
sys.exit(0)
import socket, sys, re
from lib import params
switchesVarDefaults = (
(('-l', '--listenPort'), 'listenPort', 50001),
(('-?', '--usage'), "usage", False), # boolean (set if present)
)
progname = "echoserver"
paramMap = params.parseParams(switchesVarDefaults)
listenPort = paramMap['listenPort']
listenAddr = '' # Symbolic name meaning all available interfaces
if paramMap['usage']:
params.usage()
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind((listenAddr, listenPort))
s.listen(1) # allow only one outstanding request
# s is a factory for connected sockets
conn, addr = s.accept(
) # wait until incoming connection request (and accept it)
print('Connected by', addr)
while 1:
data = conn.recv(1024).decode()
if not data: break
sendMsg = "Echoing %s" % data
print("Received '%s', sending '%s'" % (data, sendMsg))
conn.send(sendMsg.encode())
