搭建TCP服务器环境和jmeter测试TCP协议

搭建服务器环境

演示的是linux服务器上搭建环境，window环境一样

1）使用python写好服务器端程序，程序是支持多线程并发的。单线程就不需要jmeter去进行性能测试了。

代码引用：

http://www.cnblogs.com/hazir/p/python_socket_programming.html

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()

运行程序

[root@localhost Desktop]# python threadServer.py
Socket created
Socket bind complete
Socket now listening

使用telnet测试连接

[root@localhost 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服务器环境已经搭建好了

使用jmeter编写简单脚本进行测试



运行结果

正常结果



这里出现两种异常情况，一种是没有收到返回结果



一种是 Software caused connection abort



出现问题的原因还不清楚，后面分析

增加并发进行压测的时候能够明显看到服务器CPU上升

到这，jmeter测试TCP协议基本过程讲完，重要的还是后面的问题分析和定位。

中途遇到的问题：本地使用telnet能够发送请求，使用jmeter却提示unknownhost 。这是我本地jmeter的问题，重启下jmeter或者重新打开jmeter自带的tcpsampler脚本，修改一下。就可以运行了。