Python3 's socket sticky packet problem

Workaround One:

Client:

From socket import *import structimport json# ip = ' 127.0.0.1 ' ip= ' 192.168.0.105 ' port = 8080back_log = 5buffer_size = 1024t Cp_client = socket (af_inet, Sock_stream) tcp_client.connect ((IP, port)) while True:    cmd = input (' >>: '). Strip (    if CMD is none:continue    tcp_client.send (Cmd.encode (' Utf-8 '))    length = Tcp_client.recv (buffer_size)    length = Int (Length.decode (' Utf-8 '))    Tcp_client.send (b ' ready ')    recv_size = 0    recv_msg = B "    While recv_size < length:        recv_msg + = TCP_CLIENT.RECV (buffer_size)        recv_size = Len (recv_msg)    cmd_res = recv_msg    Print (Cmd_res.decode (' GBK ')) Tcp_client.close ()

Server side:

From socket import *import Subprocessip = ' Port = 8080back_log = 5buffer_size = 1024tcp_server = Socket (Af_inet, SOCK_STR EAM) tcp_server.bind ((IP, Port)) Tcp_server.listen (Back_log) while true:conn, addr = Tcp_server.accept () print (' New connection is ' , conn) print (' New link offset ', addr) while True:try:cmd = Conn.recv (buffer_size) if not cmd: Break res = subprocess. Popen (Cmd.decode (' Utf-8 '), Shell=true, stdout=subprocess. PIPE, Stdin=subprocess. PIPE, Stderr=subprocess. PIPE) Err = Res.stderr.read () If err:cmd_res = Err else:c Md_res = Res.stdout.read () length = Len (cmd_res) conn.send (str (length). Encode (' GBK ')) rea DY = Conn.recv (buffer_size) if ready = = B ' Ready ': Conn.send (cmd_res) except Exception as      E:print (e)      Break Conn.close () Tcp_server.close () 

　　

Advanced Version 2:

Client:

 fromSocketImport*ImportstructImportJsonip='127.0.0.1'#ip= ' 192.168.0.105 'Port = 8080Back_log= 5buffer_size= 1024tcp_client=socket (af_inet, Sock_stream) tcp_client.connect ((IP, port)) whileTrue:cmd= Input ('>>:'). Strip ()ifCmd isNone:Continuetcp_client.send (Cmd.encode ('Utf-8')) Length= TCP_CLIENT.RECV (4) Length= Int (Length.decode ('GBK') [0]) Recv_size=0 recv_msg= b"'     whileRecv_size <length:recv_msg+=tcp_client.recv (buffer_size) recv_size=Len (recv_msg) Cmd_res=recv_msgPrint(Cmd_res.decode ('GBK') ) Tcp_client.close ()

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Service side:

 fromSocketImport*ImportstructImportJsonip='127.0.0.1'#ip= ' 192.168.0.105 'Port = 8080Back_log= 5buffer_size= 1024tcp_client=socket (af_inet, Sock_stream) tcp_client.connect ((IP, port)) whileTrue:cmd= Input ('>>:'). Strip ()ifCmd isNone:Continuetcp_client.send (Cmd.encode ('Utf-8')) Length= TCP_CLIENT.RECV (4) Length= Int (Length.decode ('GBK') [0]) Recv_size=0 recv_msg= b"'     whileRecv_size <length:recv_msg+=tcp_client.recv (buffer_size) recv_size=Len (recv_msg) Cmd_res=recv_msgPrint(Cmd_res.decode ('GBK') ) Tcp_client.close ()

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Advanced Version 3:

Python3 's socket sticky packet problem