• 搭建伺服器環境

import socket
import sys
from thread import *

HOST = ''   # Symbolic name meaning all available interfaces
PORT = 8888 # Arbitrary non-privileged port

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
print 'Socket created'

#Bind socket to local host and port
try:
    s.bind((HOST, PORT))
except
 
 socket.error , msg:
    print 'Bind failed. Error Code : ' + str(msg[0]) + ' Message ' + msg[1]
    sys.exit()

print 'Socket bind complete'

#Start listening on socket
s.listen(10)
print 'Socket now listening'

#Function for handling connections. This will be used to create threads
def clientthread(conn)
 
:
    #Sending message to connected client
    conn.send('Welcome to the server. Type something and hit enter\n') #send only takes string

    #infinite loop so that function do not terminate and thread do not end.
    while True:

        #Receiving from client
        data = conn.recv(1024)
        reply = 'OK...'
 
 + data
        if not data:
            break

        conn.sendall(reply)
        conn.close()
    #came out of loop
    conn.close()

#now keep talking with the client
while 1:
    #wait to accept a connection - blocking call
    conn, addr = s.accept()
    print 'Connected with ' + addr[0] + ':' + str(addr[1])

    #start new thread takes 1st argument as a function name to be run, second is the tuple of arguments to the function.
    start_new_thread(clientthread ,(conn,))

s.close()

• 執行程式

[[email protected] Desktop]# python threadServer.py 
Socket created
Socket bind complete
Socket now listening

使用telnet測試連線

[[email protected] dev]# telnet 192.168.1.107 8888
Trying 192.168.1.107...
Connected to 192.168.1.107 (192.168.1.107).
Escape character is '^]'.
Welcome to the server. Type something and hit enter
nihao
OK...nihao
Connection closed by foreign host.

至此tcp伺服器環境已經搭建好了

• 使用jmeter編寫簡單指令碼進行測試
  

• 執行結果
  正常結果
  
  這裡出現兩種異常情況，一種是沒有收到返回結果
  
  一種是 Software caused connection abort
  
  出現問題的原因還不清楚，後面分析
  增加併發進行壓測的時候能夠明顯看到伺服器CPU上升

到這，jmeter測試TCP協議基本過程講完，重要的還是後面的問題分析和定位。
中途遇到的問題：本地使用telnet能夠傳送請求，使用jmeter卻提示unknownhost 。這是我本地jmeter的問題，重啟下jmeter或者重新開啟jmeter自帶的tcpsampler指令碼，修改一下。就可以運行了。