Python中用pycurl監控http回應時間指令碼分享

最近需要對節點到來源站點自己做個監控，簡單的ping可以檢測到一些東西，但是http請求的檢查也要進行，於是就研究了下pycurl。

pycurl是個用c語言實現的python 庫，雖然據說不是那麼pythonic，但是卻很高效，它支援的協議居多：

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!

這一堆協議已經很多了，我需要就是http一個，相對urlib來說，這個庫可能更快些。

以下這個指令碼是對某一個給定的url進行檢查，並列印出http相應碼，響應大小，建立連線時間，準備傳輸時間，傳輸第一個位元組時間，完成時間。

#!/usr/bin/python# coding: UTF-8import StringIOimport pycurlimport sysimport osclass Test:    def __init__(self):        self.contents = ''    def body_callback(self,buf):        self.contents = self.contents + bufdef 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)

指令碼運行效果

xu:~/curl$ python pycurl_test.py http://daxuxu.info/http_code http_size conn_time pre_tran start_tran total_time200 8703 0.748147 0.748170 1.632642 1.636552

pycurl 的一些響應資訊：
(參考： http://curl.haxx.se/libcurl/c/curl_easy_getinfo.html )

pycurl.NAMELOOKUP_TIME 網域名稱解析時間pycurl.CONNECT_TIME 遠程伺服器連線時間pycurl.PRETRANSFER_TIME 串連上後到開始傳輸時的時間pycurl.STARTTRANSFER_TIME 接收到第一個位元組的時間pycurl.TOTAL_TIME 上一請求總的時間pycurl.REDIRECT_TIME 如果存在轉向的話，花費的時間pycurl.EFFECTIVE_URLpycurl.HTTP_CODE HTTP 響應代碼pycurl.REDIRECT_COUNT 重新導向的次數pycurl.SIZE_UPLOAD 上傳的資料大小pycurl.SIZE_DOWNLOAD 下載的資料大小pycurl.SPEED_UPLOAD 上傳速度pycurl.HEADER_SIZE 頭部大小pycurl.REQUEST_SIZE 請求大小pycurl.CONTENT_LENGTH_DOWNLOAD 下載內容長度pycurl.CONTENT_LENGTH_UPLOAD 上傳內容長度pycurl.CONTENT_TYPE 內容的類型pycurl.RESPONSE_CODE 響應代碼pycurl.SPEED_DOWNLOAD 下載速度pycurl.SSL_VERIFYRESULTpycurl.INFO_FILETIME 檔案的時間資訊pycurl.HTTP_CONNECTCODE HTTP 串連代碼pycurl.HTTPAUTH_AVAILpycurl.PROXYAUTH_AVAILpycurl.OS_ERRNOpycurl.NUM_CONNECTSpycurl.SSL_ENGINESpycurl.INFO_COOKIELISTpycurl.LASTSOCKETpycurl.FTP_ENTRY_PATH

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