Python Socket Instance Practice

Simple socket Communication

Server

Import socketsock_server = Socket.socket (socket.af_inet, socket. SOCK_STREAM) sock_server.setsockopt (socket. Sol_socket, SOCKET. SO_REUSEADDR, 1)  # Reuse Address Port Sock_server.bind ((' 127.0.0.1 ', 8088)) Sock_server.listen (1)  # Start listening, 1 stands for a connection in the Allow queue, More new connections will be rejected print (' starting ... ') while True:    conn, client_addr = Sock_server.accept ()  # blocks until a connection is reached. When a new connection comes in, a connection object is generated for this request    print (CLIENT_ADDR) while    True:        try:            data = CONN.RECV (1024) # receives 1024 bytes            if not Data:break  # applies to the Linux operating system, prevents the client from disconnecting after the dead loop            print (' Client's data ', ' Conn.sendall ')            (Data.upper ())  # Return all received data back to the client        except Connectionreseterror:  # for Windows operating systems, prevent clients from disconnecting after a dead loop break    Conn.close () Server.close ()

Client

Import socketclient = Socket.socket (socket.af_inet, socket. SOCK_STREAM) print (client) client.connect ((' 127.0.0.1 ', 8088)) while True:    data = input (' input >>> ')    If not data:  # to continue entering        continue    client.send (Data.encode (' Utf-8 ')) # if it is empty #  send data    = CLIENT.RECV ( 1024x768)   # receive data    print (' receive data = ', Data.decode ()) Client.close ()  # Close

Server output

Starting ... (' 127.0.0.1 ', 4612) client data b ' HELLP ' client data b ' Java ' (' 127.0.0.1 ', 4618) client data b ' ABC ' Client data B ' CD '

CLIENT1 output

<socket.socket fd=216, Family=addressfamily.af_inet, Type=socketkind.sock_stream, Proto=0>input >>> HELLP Receive data = Hellpinput >>>java receive data = Javainput >>>process finished with exit Code-1 # Close CLIENT1

CLIENT2 output

<socket.socket fd=216, Family=addressfamily.af_inet, Type=socketkind.sock_stream, Proto=0>input >>> ABC Receive data = Abcinput >>>CD receive data = CDinput >>>

Impersonation SSH Remote execution command

Sever End

Import socketimport subprocessdef cmd_exec (cmd): "" "Executes shell command:p Aram CMD:: Return:" "" P = SUBPROCESS.P Open (cmd, shell=true, stdin=subprocess. Pipe,stdout=subprocess. Pipe,stderr=subprocess. PIPE) stdout, stderr = P.communicate () if p.returncode! = 0:return stderr return stdoutsock_server = sock Et.socket (socket.af_inet, socket. SOCK_STREAM) sock_server.setsockopt (socket. Sol_socket, SOCKET. SO_REUSEADDR, 1) # Reuse address Port Sock_server.bind ((' 127.0.0.1 ', 8088)) Sock_server.listen (1) # Start listening, 1 stands for a connection in the Allow queue, More new connections will be rejected when the print (' starting ... ') while true:conn, client_addr = Sock_server.accept () # is blocked until a connection is made, and a new connection comes in.  To survive as a Connection object print (client_addr) while True:try:data = CONN.RECV (1024) # receive 1024 bytes if not Data:break # for Linux operating system, prevent client disconnects after dead loop print (' Client command ', Data.decode (' GBK ')) res = Cmd_exec (DATA.D        Ecode (' GBK ') # Execute CMD command print (RES) Conn.sendall (RES) # return all incoming data to the clientExcept Connectionreseterror: # applies to Windows operating systems, prevents clients from disconnecting after a dead loop break Conn.close () Server.close () 

Client Side

Import socketclient = Socket.socket (socket.af_inet, socket. SOCK_STREAM) print (client) client.connect ((' 127.0.0.1 ', 8088)) while True:    data = input (' input >>> ')    If not data:  # to continue entering        continue    client.send (Data.encode (' GBK '))  # send data    response = bytes () If it is empty Data    = CLIENT.RECV (1024x768)   # receives the    print (' receive data = ', Data.decode (' GBK ', ' ignore '))  # If set to ignore, illegal characters are ignored; Client.close ()  # Close

Server output

　

starting ... ('127.0.0.1', 6091) The client's command ipconfig/ All7705 b'\r\nwindows IP \xc5\xe4\xd6\xc3\r\n\r\n \XD6\XF7\XBB\XFA\XC3\XFB ............. : jingjing-pc\r\n \xd6\xf7 DNS \xba\xf3\xd7\xba ........... : \ r \ n \xbd\xda\xb5\xe3\xc0\xe0\xd0\xcd ...: \xbb\xec\xba\xcf\r\n IP \xc2\xb7\xd3\xc9\xd2\xd1\xc 6\xf4\xd3\xc3: \xb7\xf1\r\n WINS \xb4\xfa\xc0\xed\xd2\xd1\xc6\xf4\xd3\xc3 ........... . : \xb7\xf1\r\n\r\n\xd2\xd4\xcc\xab\xcd\xf8\xca\xca\xc5\xe4\xc6\xf7 \xb1\xbe\xb5\xd8\xc1\xac\xbd\xd3 3:\r\n\r\n \ Xc3\xbd\xcc\xe5\xd7\xb4\xcc\xac ...: \xc3\xbd\xcc\xe5\xd2\xd1\xb6\xcf\xbf\xaa\r\n \xc1\xac\xbd, ..... \xd3\xcc\xd8\xb6\xa8\xb5\xc4 DNS \xba\xf3\xd7\xba ...: \ r \ n \xc3\xe8\xca\xf6. .............. : Bluetooth PAN Network adapter\r\n \xce\xef\xc0\xed\xb5\xd8\xd6\xb7. ............ : 60-f8-1d-ad-89-ef\r\n DHCP \xd2\xd1\xc6\xf4\xd3\xc3 ........... : \xca\xc7\r\n \XD7\XD4\XB6\XAF\XC5\XE4\XD6\XC3\XD2\XD1\XC6\XF4\XD3\XC3 ..... . : \xca\xc7\r\n\r\n\xce\xde\xcf\xdf\xbe\xd6\xd3\xf2\xcd\xf8\xca\xca\xc5\xe4\xc6\xf7 \xce\xde\xcf\xdf\xcd\xf8\xc2\ xe7\xc1\xac\xbd\xd3:\r\n\r\n \xc1\xac\xbd\xd3\xcc\xd8\xb6\xa8\xb5\xc4 DNS \xba\xf3\xd7\xba ...: \ r \ n \xc3\ Xe8\xca\xf6. .............. : Broadcom 802.11ac Network adapter\r\n \xce\xef\xc0\xed\xb5\xd8\xd6\xb7. ............ : 60-f8-1d-ad-89-ee\r\n DHCP \xd2\xd1\xc6\xf4\xd3\xc3 ........... : \xca\xc7\r\n \xd7\xd4\xb6\xaf\xc5\xe4\xd6\xc3\xd2\xd1\xc6\xf4\xd3\xc3 ....: \xca\xc7\r\n \xb1\xbe\ Xb5\xd8\xc1\xb4\xbd\xd3 IPv6 \xb5\xd8\xd6\xb7 ... : fe80::55d1:e185:f929:8ce3%13 (\XCA\XD7\XD1\XA1) \ r \ IPv4 \xb5\xd8\xd6\xb7 ............:192.168.31.125(\ XCA\XD7\XD1\XA1) \ r \ n \xd7\xd3\xcd\xf8\xd1\xda\xc2\xeb ...: 255.255.255.0\r\n \xbb\xf1\xb5\xc3\x D7\xe2\xd4\xbc\xb5\xc4\xca\xb1\xbc\xe4 ..... .  : 2018\xc4\xea7\xd4\xc25\xc8\xd5 20:46:29\r\n \xd7\xe2\xd4\xbc\xb9\xfd\xc6\xda\xb5\xc4\xca\xb1\xbc\xe4 ..... . : 2018\xc4\xea7\xd4\xc26\xc8\xd5 8:46:29\r\n \xc4\xac\xc8\xcf\xcd\xf8\xb9\xd8. ............ : 192.168.31.1\r\n DHCP \xb7\xfe\xce\xf1\xc6\xf7 ........... : 192.168.31.1\r\n DHCPv6 IAID ........... : 291567645\r\n DHCPv6 \xbf\xcd\xbb\xa7\xb6\xcb DUID ...: 00-01-00-01-21-7c-0d-6e-60-f8-1d-ad-89-ee\r\n DN S \xb7\xfe\xce\xf1\xc6\xf7 ........... : 114.114.114.114\r\n TCPIP \xc9\xcf\xb5\xc4 NetBIOS .......:\xd2\xd1\xc6\xf4\xd3\xc3\r\n\r\n\xd2\xd4\xcc\xab \xcd\xf8\xca\xca\xc5\xe4\xc6\xf7 VirtualBox host-only network:\r\n\r\n \xc1\xac\xbd\xd3\xcc\xd8\xb6\xa8\xb5\xc4 DNS \xba\xf3\xd7\xba ...: \ r \ n \xc3\xe8\xca\xf6. .............. : VirtualBox host-only Ethernet adapter\r\n \xce\xef\xc0\xed\xb5\xd8\xd6\xb7. ............ : 0a-00-27-00-00-13\r\n DHCP \xd2\xd1\xc6\xf4\xd3\xc3 ........... : \xb7\xf1\r\ n \xd7\xd4\xb6\xaf\xc5\xe4\xd6\xc3\xd2\xd1\xc6\xf4\xd3\xc3 ...: \xca\xc7\r\n \xb1\xbe\xb5\xd8\xc1\ Xb4\xbd\xd3 IPv6 \xb5\xd8\xd6\xb7 ...  : fe80::7d26:2c96:84f1:6c4d%19 (\XCA\XD7\XD1\XA1) \ r \ \xd7\xd4\xb6\xaf\xc5\xe4\xd6\xc3 IPv4 \xb5\xd8\xd6\xb7 ...: 169.254.108.77 (\xca\xd7\xd1\xa1) \ r \ n \xd7\xd3\xcd\xf8\xd1\xda\xc2\xeb ............:255.2 55.0.0\r\n \xc4\xac\xc8\xcf\xcd\xf8\xb9\xd8. ............ : 192.168.56.255\r\n DHCPv6 IAID ........... : 336199719\r\n DHCPv6 \xbf\xcd\xbb\xa7\xb6\xcb DUID ...: 00-01-00-01-21-7c-0d-6e-60-f8-1d-ad-89-ee\r\n DN S \xb7\xfe\xce\xf1\xc6\xf7 ...........                                       : fec0:0:0:ffff::1%1\r\n fec0:0:0:ffff::2%1\r\n fec0:0:0:ffff::3%1\r\n TCPIP \xc9\xcf\xb5\xc4 NetBIOS .......:\xd2\xd1\xc6\xf4\xd3\xc3\r\n\r\n\xd2\xd4\xcc\x Ab\xcd\xf8\xca\xca\xc5\xe4\xc6\xf7 VirtualBox host-onlyNetwork #2: \r\n\r\n \xc1\xac\xbd\xd3\xcc\xd8\xb6\xa8\xb5\xc4 DNS \xba\xf3\xd7\xba ...: \ r \ n \xc3\xe8\xca\xf  6 .....: VirtualBox host-only Ethernet Adapter #2 \ r \ n \xce\xef\xc0\xed\xb5\xd8\xd6\xb7 ..... . . . . . . . . : 0a-00-27-00-00-14\r\n DHCP \xd2\xd1\xc6\xf4\xd3\xc3 ........... : \xb7\xf1\r\n \xd7\xd4\xb6\xaf\xc5\xe4\xd6\xc3\xd2\xd1\xc6\xf4\xd3\xc3 ....: \xca\xc7\r\n \xb1\xbe\ Xb5\xd8\xc1\xb4\xbd\xd3 IPv6 \xb5\xd8\xd6\xb7 ... : fe80::641c:b67e:fa43:a28d%20 (\XCA\XD7\XD1\XA1) \ r \ IPv4 \xb5\xd8\xd6\xb7 ............:192.168.96.1(\ XCA\XD7\XD1\XA1) \ r \ n \xd7\xd3\xcd\xf8\xd1\xda\xc2\xeb ...: 255.255.255.0\r\n \xc4\xac\xc8\xcf\x Cd\xf8\xb9\xd8. ............ : \ r \ DHCPv6 IAID ........... : 537526311\r\n DHCPv6 \xbf\xcd\xbb\xa7\xb6\xcb DUID ...: 00-01-00-01-21-7c-0d-6e-60-f8-1d-ad-89-ee\r\n DN S \xb7\xfe\xce\xf1\xc6\xf7 ..... . . . . . .                                       : fec0:0:0:ffff::1%1\r\n fec0:0:0:ffff::2%1\r\n fec0:0:0:ffff::3%1\r\n TCPIP \xc9\xcf\xb5\xc4 NetBIOS .......:\xd2\xd1\xc6\xf4\xd3\xc3\r\n\r\n\xd2\xd4\xcc\x Ab\xcd\xf8\xca\xca\xc5\xe4\xc6\xf7 VMware Network Adapter vmnet1:\r\n\r\n \xc1\xac\xbd\xd3\xcc\xd8\xb6\xa8\xb5\xc4 DNS \xba\xf3\xd7\xba ....: \ r \ n \xc3\xe8\xca\xf6. .............. : VMware Virtual Ethernet Adapter for vmnet1\r\n \xce\xef\xc0\xed\xb5\xd8\xd6\xb7. ............ : 00-50-56-c0-00-01\r\n DHCP \xd2\xd1\xc6\xf4\xd3\xc3 ........... : \xca\xc7\r\n \xd7\xd4\xb6\xaf\xc5\xe4\xd6\xc3\xd2\xd1\xc6\xf4\xd3\xc3 ....: \xca\xc7\r\n \xb1\xbe\ Xb5\xd8\xc1\xb4\xbd\xd3 IPv6 \xb5\xd8\xd6\xb7 ... : fe80::20c1:b2f0:8bff:626c%25 (\XCA\XD7\XD1\XA1) \ r \ IPv4 \xb5\xd8\xd6\xb7 ............:192.168.109.1(\ XCA\XD7\XD1\XA1) \ r \ \XD7\XD3\XCD\XF8\XD1\XDA\XC2\xeb ...: 255.255.255.0\r\n \xbb\xf1\xb5\xc3\xd7\xe2\xd4\xbc\xb5\xc4\xca\xb1\xbc\xe4 ......... . . . .  : 2018\xc4\xea7\xd4\xc25\xc8\xd5 20:46:20\r\n \xd7\xe2\xd4\xbc\xb9\xfd\xc6\xda\xb5\xc4\xca\xb1\xbc\xe4 . . . . . . . . . : 2018\xc4\xea7\xd4\xc25\xc8\xd5 23:46:20\r\n \xc4\xac\xc8\xcf\xcd\xf8\xb9\xd8. ............ : \ r \ n DHCP \xb7\xfe\xce\xf1\xc6\xf7 ........... : 192.168.109.254\r\n DHCPv6 IAID ........... : 385896534\r\n DHCPv6 \xbf\xcd\xbb\xa7\xb6\xcb DUID ...: 00-01-00-01-21-7c-0d-6e-60-f8-1d-ad-89-ee\r\n DN S \xb7\xfe\xce\xf1\xc6\xf7 ...........                                       : fec0:0:0:ffff::1%1\r\n fec0:0:0:ffff::2%1\r\n fec0:0:0:ffff::3%1\r\n TCPIP \xc9\xcf\xb5\xc4 NetBIOS .......:\xd2\xd1\xc6\xf4\xd3\xc3\r\n\r\n\xd2\xd4\xcc\x Ab\xcd\xf8\xca\xca\xc5\xe4\xc6\xf7 VMware Network Adapter vmnet8:\r\n\r\n \xc1\xac\xbd\xd3\xcc\xd8\xb6\xa8\xb5\xc4 DNS \xba\xf3\xd7\xba ...: \ r \ n \xc3\xe8\xca\xf6. .............. : VMware Virtual Ethernet Adapter for vmnet8\r\n \xce\xef\xc0\xed\xb5\xd8\xd6\xb7. ............ : 00-50-56-c0-00-08\r\n DHCP \xd2\xd1\xc6\xf4\xd3\xc3 ........... : \xca\xc7\r\n \xd7\xd4\xb6\xaf\xc5\xe4\xd6\xc3\xd2\xd1\xc6\xf4\xd3\xc3 ....: \xca\xc7\r\n \xb1\xbe\ Xb5\xd8\xc1\xb4\xbd\xd3 IPv6 \xb5\xd8\xd6\xb7 ... : fe80::61fd:5f66:1f70:cb3d%26 (\XCA\XD7\XD1\XA1) \ r \ IPv4 \xb5\xd8\xd6\xb7 ............:192.168.5.1(\XCA \XD7\XD1\XA1) \ r \ n \xd7\xd3\xcd\xf8\xd1\xda\xc2\xeb ...: 255.255.255.0\r\n \xbb\xf1\xb5\xc3\xd7\ Xe2\xd4\xbc\xb5\xc4\xca\xb1\xbc\xe4 ..... .  : 2018\xc4\xea7\xd4\xc25\xc8\xd5 20:46:21\r\n \xd7\xe2\xd4\xbc\xb9\xfd\xc6\xda\xb5\xc4\xca\xb1\xbc\xe4 . . . . . . . . . : 2018\xc4\xea7\xd4\xc25\xc8\xd5 23:46:21\r\n \xc4\xac\xc8\xcf\xcd\xf8\xb9\xd8. ............ : \ r \ n   DHCP \xb7\xfe\xce\xf1\xc6\xf7 ........... : 192.168.5.254\r\n DHCPv6 IAID ........... : 402673750\r\n DHCPv6 \xbf\xcd\xbb\xa7\xb6\xcb DUID ...: 00-01-00-01-21-7c-0d-6e-60-f8-1d-ad-89-ee\r\n DN S \xb7\xfe\xce\xf1\xc6\xf7 ...........                                       : fec0:0:0:ffff::1%1\r\n fec0:0:0:ffff::2%1\r\n fec0:0:0:ffff::3%1\r\n \xd6\xf7 WINS \xb7\xfe\xce\xf1\xc6\xf7 ... . : 192.168.5.2\r\n TCPIP \xc9\xcf\xb5\xc4 NetBIOS .......:\xd2\xd1\xc6\xf4\xd3\xc3\r\n\r\n\xcb\xed\xb5\xc0\xca \xca\xc5\xe4\xc6\xf7 \xb1\xbe\xb5\xd8\xc1\xac\xbd\xd3* 14:\r\n\r\n \xc3\xbd\xcc\xe5\xd7\xb4\xcc\xac ... . . . . : \xc3\xbd\xcc\xe5\xd2\xd1\xb6\xcf\xbf\xaa\r\n \xc1\xac\xbd\xd3\xcc\xd8\xb6\xa8\xb5\xc4 DNS \xba\xf3\xd7\xba .....: \ r \ n \xc3\xe8\xca\xf6. .............. : Microsoft ISATAP Adapter #2 \ r \ n \xce\xef\xc0\xed\xb5\xd8\xd6\xb7 ..... .....: 00-00-00-00-00-00-00-e0\r\n DHCP \xd2\xd1\xc6\xf4\xd3\xc3 ........... : \xb7\xf1\r\n \xd7\xd4\xb6\xaf\xc5\xe4\xd6\xc3\xd2\xd1\xc6\xf4\xd3\xc3. .........:\xca\xc7\r\n\r\n\xcb\  Xed\xb5\xc0\xca\xca\xc5\xe4\xc6\xf7 Teredo tunneling pseudo-interface:\r\n\r\n \xc3\xbd\xcc\xe5\xd7\xb4\xcc\xac ......: \xc3\xbd\xcc\xe5\xd2\xd1\xb6\xcf\xbf\xaa\r\n \xc1\xac\xbd\xd3\xcc\xd8\xb6\xa8\xb5\xc4 DNS \xba\xf3\xd7\xba ...: \ r \ n \xc3\xe8\xca\xf6. .............. : Teredo tunneling pseudo-interface\r\n \xce\xef\xc0\xed\xb5\xd8\xd6\xb7. ............ : 00-00-00-00-00-00-00-e0\r\n DHCP \xd2\xd1\xc6\xf4\xd3\xc3 ........... : \xb7\xf1\r\n \xd7\xd4\xb6\xaf\xc5\xe4\xd6\xc3\xd2\xd1\xc6\xf4\xd3\xc3. .........:\xca\xc7\r\n\r\n\xcb\ Xed\xb5\xc0\xca\xca\xc5\xe4\xc6\xf7 ISATAP. {0da4a980-7247-4922-aafb-55760b865c15}:\r\n\r\n \xc3\xbd\xcc\xe5\xd7\xb4\xcc\xac ............:\xc3\xbd \xcc\xe5\xd2\xd1\xb6\xcf\xbf\xaa\r\n \xc1\xac\xbd\xd3\xcc\xd8\xb6\xa8\xb5\xc4 DNS \xba\xf3\xd7\xba ...: \ r \ n \xc3\x E8\xca\xf6. .............. : Microsoft ISATAP Adapter #3 \ r \ \xce\xef\xc0\xed\xb5\xd8\xd6\xb7. ............ : 00-00-00-00-00-00-00-e0\r\n DHCP \xd2\xd1\xc6\xf4\xd3\xc3 ........... : \xb7\xf1\r\n \xd7\xd4\xb6\xaf\xc5\xe4\xd6\xc3\xd2\xd1\xc6\xf4\xd3\xc3. .........:\xca\xc7\r\n\r\n\xcb\ Xed\xb5\xc0\xca\xca\xc5\xe4\xc6\xf7 isatap.localdomain:\r\n\r\n \xc3\xbd\xcc\xe5\xd7\xb4\xcc\xac ... .....: \xc3\xbd\xcc\xe5\xd2\xd1\xb6\xcf\xbf\xaa\r\n \xc1\xac\xbd\xd3\xcc\xd8\xb6\xa8\xb5\xc4 DNS \xba\xf3\xd7\ Xba ...: \ r \ n \xc3\xe8\xca\xf6. .............. : Microsoft ISATAP Adapter #5 \ r \ \xce\xef\xc0\xed\xb5\xd8\xd6\xb7. ............ : 00-00-00-00-00-00-00-e0\r\n DHCP \xd2\xd1\xc6\xf4\xd3\xc3 ........... : \xb7\xf1\r\n \xd7\xd4\xb6\xaf\xc5\xe4\xd6\xc3\xd2\xd1\xc6\xF4\xd3\xc3 ....: \xca\xc7\r\n\r\n\xcb\xed\xb5\xc0\xca\xca\xc5\xe4\xc6\xf7 \xb1\xbe\xb5\xd8\xc1\xac\. xbd\xd3* 15:\r\n\r\n \xc3\xbd\xcc\xe5\xd7\xb4\xcc\xac ............:\XC3\XBD\XCC\XE5\XD2\XD1\XB6\XCF\XBF  \xaa\r\n \xc1\xac\xbd\xd3\xcc\xd8\xb6\xa8\xb5\xc4 DNS \xba\xf3\xd7\xba ...: \ r \ n \xc3\xe8\xca\xf6 ..... .....: Microsoft ISATAP Adapter #6 \ r \ n \xce\xef\xc0\xed\xb5\xd8\xd6\xb7. ............ : 00-00-00-00-00-00-00-e0\r\n DHCP \xd2\xd1\xc6\xf4\xd3\xc3 ........... : \xb7\xf1\r\n \xd7\xd4\xb6\xaf\xc5\xe4\xd6\xc3\xd2\xd1\xc6\xf4\xd3\xc3. .........:\xca\xc7\r\n\r\n\xcb\ Xed\xb5\xc0\xca\xca\xc5\xe4\xc6\xf7 ISATAP. {94c5f926-3e20-4589-a88e-54a36934d42c}:\r\n\r\n \xc3\xbd\xcc\xe5\xd7\xb4\xcc\xac ............:\xc3\xbd \xcc\xe5\xd2\xd1\xb6\xcf\xbf\xaa\r\n \xc1\xac\xbd\xd3\xcc\xd8\xb6\xa8\xb5\xc4 DNS \xba\xf3\xd7\xba ...: \ r\n \xc3\xe8\xca\xf6. ..............: Microsoft ISATAP Adapter #8 \ r \ \xce\xef\xc0\xed\xb5\xd8\xd6\xb7. ............ : 00-00-00-00-00-00-00-e0\r\n DHCP \xd2\xd1\xc6\xf4\xd3\xc3 ........... : \xb7\xf1\r\n \xd7\xd4\xb6\xaf\xc5\xe4\xd6\xc3\xd2\xd1\xc6\xf4\xd3\xc3. .........:\xca\xc7\r\n'command for the client LSb"' ls ' \xb2\xbb\xca\xc7\xc4\xda\xb2\xbf\xbb\xf2\xcd\xe2\xb2\xbf\xc3\xfc\xc1\xee\xa3\xac\xd2\xb2\xb2\xbb\xca\ Xc7\xbf\xc9\xd4\xcb\xd0\xd0\xb5\xc4\xb3\xcc\xd0\xf2\r\n\xbb\xf2\xc5\xfa\xb4\xa6\xc0\xed\xce\xc4\xbc\xfe\xa1\ xa3\r\n"

　　

Client output

Input >>>ipconfig/all Receive data = Windows IP Configuration host name ............. :-pc primary DNS suffix ........... : node type ............: hybrid IP routing enabled ..........: no WINS agent enabled ... . : No Ethernet Adapter Local Area Connection 3: Media status ............: media disconnected specific DNS suffix ...: Description .............. . : Bluetooth PAN Network Adapter Physical Address ............. : 60-f8-1d-ad-89-ef DHCP is enabled ........... : Is automatic configuration enabled ..........: is a wireless LAN adapter wireless network connection: Connection specific DNS suffix ...: description ............... : Broadcom 802.11ac Network Adapter Physical Address ............. : 60-f8-1d-ad-89-ee DHCP is enabled ........... : Is automatic configuration enabled ..........: is a local link IPv6 address ..... : fe80::55d1:e185:f929:8ce3%13 (preferred) IPV4 address ............:192.168.31.125(preferred) Subnet mask input >>>LS receive data =............:255.255.255.0 time to obtain a lease ... . : July 5, 2018 20:46:29 the lease expiresTime........ . : July 6, 2018 8:46:29 default gateway ............. : 192.168.31.1 DHCP Server ........... : 192.168.31.1 DHCPv6 IAID ...........  : 291567645 DHCPv6 Client DUID ...: 00-01-00-01-21-7c-0d-6e-60-f8-1d-ad-89-ee DNS server ...........  : 114.114.114.114 TCPIP on NetBIOS ...: Enabled Ethernet Adapter VirtualBox host-only Network: Connection-specific DNS suffix .... . : Description ............... : VirtualBox host-only Ethernet Adapter Physical Address ............. : 0a-00-27-00-00-13 DHCP is enabled ........... : No automatic configuration Enabled ..........: is a local link IPv6 address ..... : fe80::7d26:2c96:84f1:6c4d%19 (preferred) automatically configures IPV4 address .......:169.254.108.77(preferred) Subnet mask ............: 255.255.0.0 the default gateway. .  Input >>>#出现粘包现象

　　

　　

Python Socket Instance Practice