Python networking note

Function Not ready, don't use it. 
netstat -aon

#Ethan_s.py
#!/usr/bin/python
# -*- coding: UTF-8 -*-

import socket, os, sys, time, subprocess        # Import socket module
from subprocess import Popen, PIPE
reload(sys)
sys.setdefaultencoding('utf8')
#0==================================                                #http://www.bogotobogo.com/python/python_network_programming_server_client_file_transfer.php
port = 60001                    # Reserve a port for your service.
s = socket.socket()             # Create a socket object
host = socket.gethostname()     # Get local machine name
s.bind((host, port))            # Bind to the port
s.listen(5)                     # Now wait for client connection.
print 'Server listening....'

#1==================================
while True: #Loop for listening
    conn, addr = s.accept()     # Establish connection with client.
    print 'Got connection from', addr
    print('Server received', conn.recv(1024)) #R0 Hello server!, repr() like as str()

#2==================================
    try:
        while conn:
            data = conn.recv(4096)  #R1, 4096 is recommand
            print ("Receiving...: "+data)
           
            p=subprocess.Popen(data,shell=True, stdout=PIPE, stderr=PIPE, stdin=PIPE)
            stdout,stderr =p.communicate()         

            send_data = str("\nServer got msg: \n===========START================\n"+
                        "cmd: "+data+"\n"+
                        "stdout: \n"+stdout+"\n"+
                        "stderr: \n"+stderr+"\n"+
                        "\n===========END================\n")
           

            conn.sendall(send_data) #S1, buffer不足
            #while (send_data):
            #    conn.send(send_data)
            print("Sending... "+send_data)


    except IOError as e:
        print "I/O error({0}): {1}".format(e.errno, e.strerror)
    except socket.error as msg:
        print "Socket Error: %s" % msg
    except TypeError as msg:
        print "Type Error: %s" % msg
    finally:
        print('Successfully !')
        #print('Sending finished')
        #conn.send('Thank you for connecting\n')
        conn.close()
        print '\n\n\nServer listening....'



"""
Know issue buffer not ready 如果傳太多data會lose data
"""

#Ethan_c.py

#!/usr/bin/python
# -*- coding: UTF-8 -*-

import socket, os, sys, time          # Import socket module
from subprocess import Popen   #http://www.bogotobogo.com/python/python_network_programming_server_client_file_transfer.php
reload(sys)
sys.setdefaultencoding('utf8')
#0==================================
port = 60001   
s = socket.socket()             # Create a socket object
host = socket.gethostname()     # Get local machine name
                                # Reserve a port for your service.



#1==================================
s.connect(('10.110.145.250', port))    #s.connect((host, port))

#10.110.146.77
#10.110.136.52
#10.110.136.159

s.send("Hello server!") #S0


#2==================================
try:
    while True :
        remote_cmd = raw_input("please input the cmd (default is dir): \n")#"please input the cmd (default is dir):", "dir"
     
        if remote_cmd.lower() == "":
            recv_data = s.recv(1024)
            print ("\nReceive... \n"+ recv_data)     
        elif remote_cmd.lower() == "exit" or remote_cmd.lower() == "q":
            s.send("Close by client")
            s.close()
        else:
            s.send(remote_cmd)   #S1
            print('Sending... ',repr(remote_cmd))

        time.sleep(1)   #delay
        recv_data = s.recv(1024)    #R1, buffer not enough
        if recv_data:
            print ("\nReceive... \n"+ recv_data)
            recv_data = s.recv(1024)  # keep waiting for data coming. Bug at here
            if not recv_data:
                s.close()
                break
            time.sleep(1)





except IOError as e:
    print "I/O error({0}): {1}".format(e.errno, e.strerror)
except socket.error as msg:
    print "Socket Error: %s" % msg
except TypeError as msg:
    print "Type Error: %s" % msg 
finally:
    #print("Sever: " +s.recv(1024))
    s.close()
    print('connection closed')

#p=Popen('received_file.bat')
#stdout,stderr =p.communicate()

"""
Know issue buffer not ready 如果傳太多data會lose data
"""