Python中用pycurl监控http响应时间脚本分享
最近需要对节点到源站自己做个监控，简单的ping可以检测到一些东西，但是http请求的检查也要进行，于是就研究了下pycurl。
pycurl是个用c语言实现的python 库，虽然据说不是那么pythonic，但是却很高效，它支持的协议居多：
supporting FTP, FTPS, HTTP, HTTPS, GOPHER, TELNET, DICT, FILE and LDAP. libcurl supports HTTPS certificates, HTTP POST, HTTP PUT, FTP uploading, kerberos, HTTP form based upload, proxies, cookies, user+password authentication, file transfer resume, http proxy tunneling and more!
这一堆协议已经很多了，我需要就是http一个，相对urlib来说，这个库可能更快些。
以下这个脚本是对某一个给定的url进行检查，并打印出http相应码，响应大小，建立连接时间，准备传输时间，传输第一个字节时间，完成时间。
#!/usr/bin/python
# coding: UTF-8
import StringIO
import pycurl
import sys
import os
class Test:
def __init__(self):
self.contents = ''
def body_callback(self,buf):
self.contents = self.contents + buf
def test_gzip(input_url):
t = Test()
#gzip_test = file("gzip_test.txt", 'w')
c = pycurl.Curl()
c.setopt(pycurl.WRITEFUNCTION,t.body_callback)
c.setopt(pycurl.ENCODING, 'gzip')
c.setopt(pycurl.URL,input_url)
c.perform()
http_code = c.getinfo(pycurl.HTTP_CODE)
http_conn_time = c.getinfo(pycurl.CONNECT_TIME)
http_pre_tran = c.getinfo(pycurl.PRETRANSFER_TIME)
http_start_tran = c.getinfo(pycurl.STARTTRANSFER_TIME)
http_total_time = c.getinfo(pycurl.TOTAL_TIME)
http_size = c.getinfo(pycurl.SIZE_DOWNLOAD)
print 'http_code http_size conn_time pre_tran start_tran total_time'
print "%d %d %f %f %f %f"%(http_code,http_size,http_conn_time,http_pre_tran,http_start_tran,http_total_time)
if __name__ == '__main__':
input_url = sys.argv[1]
test_gzip(input_url)
脚本运行效果
xu:~/curl$ python pycurl_test.py http://daxuxu.info/ http_code http_size conn_time pre_tran start_tran total_time 200 8703 0.748147 0.748170 1.632642 1.636552
pycurl 的一些响应信息：
(参考： http://curl.haxx.se/libcurl/c/curl_easy_getinfo.html )
pycurl.NAMELOOKUP_TIME 域名解析时间 pycurl.CONNECT_TIME 远程服务器连接时间 pycurl.PRETRANSFER_TIME 连接上后到开始传输时的时间 pycurl.STARTTRANSFER_TIME 接收到第一个字节的时间 pycurl.TOTAL_TIME 上一请求总的时间 pycurl.REDIRECT_TIME 如果存在转向的话，花费的时间 pycurl.EFFECTIVE_URL pycurl.HTTP_CODE HTTP 响应代码 pycurl.REDIRECT_COUNT 重定向的次数 pycurl.SIZE_UPLOAD 上传的数据大小 pycurl.SIZE_DOWNLOAD 下载的数据大小 pycurl.SPEED_UPLOAD 上传速度 pycurl.HEADER_SIZE 头部大小 pycurl.REQUEST_SIZE 请求大小 pycurl.CONTENT_LENGTH_DOWNLOAD 下载内容长度 pycurl.CONTENT_LENGTH_UPLOAD 上传内容长度 pycurl.CONTENT_TYPE 内容的类型 pycurl.RESPONSE_CODE 响应代码 pycurl.SPEED_DOWNLOAD 下载速度 pycurl.SSL_VERIFYRESULT pycurl.INFO_FILETIME 文件的时间信息 pycurl.HTTP_CONNECTCODE HTTP 连接代码 pycurl.HTTPAUTH_AVAIL pycurl.PROXYAUTH_AVAIL pycurl.OS_ERRNO pycurl.NUM_CONNECTS pycurl.SSL_ENGINES pycurl.INFO_COOKIELIST pycurl.LASTSOCKET pycurl.FTP_ENTRY_PATH
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