python 實現ping測試延遲的兩種方法
阿新 • • 發佈:2020-12-11
一.python實現ping返回延遲繁瑣版
#!/usr/bin/python3.7 # !coding:utf-8 __author__ = 'hsz' __date__ = 'Thu Feb 27 22:41:15 EST 2020' import time import struct import socket import select import sys def chesksum(data): """ 校驗 """ n = len(data) m = n % 2 sum = 0 for i in range(0,n - m,2): sum += (data[i]) + ((data[i + 1]) << 8) # 傳入data以每兩個位元組(十六進位制)通過ord轉十進位制,第一位元組在低位,第二個位元組在高位 if m: sum += (data[-1]) # 將高於16位與低16位相加 sum = (sum >> 16) + (sum & 0xffff) sum += (sum >> 16) # 如果還有高於16位,將繼續與低16位相加 answer = ~sum & 0xffff # 主機位元組序轉網路位元組序列(參考小端序轉大端序) answer = answer >> 8 | (answer << 8 & 0xff00) return answer ''' 連線套接字,並將資料傳送到套接字 ''' def raw_socket(dst_addr,imcp_packet): rawsocket = socket.socket(socket.AF_INET,socket.SOCK_RAW,socket.getprotobyname("icmp")) send_request_ping_time = time.time() # send data to the socket rawsocket.sendto(imcp_packet,(dst_addr,80)) return send_request_ping_time,rawsocket,dst_addr ''' request ping ''' def request_ping(data_type,data_code,data_checksum,data_ID,data_Sequence,payload_body): # 把位元組打包成二進位制資料 imcp_packet = struct.pack('>BBHHH32s',data_type,payload_body) icmp_chesksum = chesksum(imcp_packet) # 獲取校驗和 imcp_packet = struct.pack('>BBHHH32s',icmp_chesksum,payload_body) return imcp_packet ''' reply ping ''' def reply_ping(send_request_ping_time,timeout=2): while True: started_select = time.time() what_ready = select.select([rawsocket],[],timeout) wait_for_time = (time.time() - started_select) if what_ready[0] == []: # Timeout return -1 time_received = time.time() received_packet,addr = rawsocket.recvfrom(1024) icmpHeader = received_packet[20:28] type,code,checksum,packet_id,sequence = struct.unpack( ">BBHHH",icmpHeader ) if type == 0 and sequence == data_Sequence: return time_received - send_request_ping_time timeout = timeout - wait_for_time if timeout <= 0: return -1 ''' 實現 ping 主機/ip ''' def ping(host): data_type = 8 # ICMP Echo Request data_code = 0 # must be zero data_checksum = 0 # "...with value 0 substituted for this field..." data_ID = 0 # Identifier data_Sequence = 1 # Sequence number payload_body = b'abcdefghijklmnopqrstuvwabcdefghi' # data dst_addr = socket.gethostbyname(host) # 將主機名轉ipv4地址格式,返回以ipv4地址格式的字串,如果主機名稱是ipv4地址,則它將保持不變 print("正在 Ping {0} [{1}] 具有 32 位元組的資料:".format(host,dst_addr)) for i in range(0,4): icmp_packet = request_ping(data_type,data_Sequence + i,payload_body) send_request_ping_time,addr = raw_socket(dst_addr,icmp_packet) times = reply_ping(send_request_ping_time,data_Sequence + i) if times > 0: print("來自 {0} 的回覆: 位元組=32 時間={1}ms".format(addr,int(times * 1000))) time.sleep(0.7) else: print("請求超時。") if __name__ == "__main__": # if len(sys.argv) < 2: # sys.exit('Usage: ping.py <host>') ping('www.baidu.com') # sys.argv[1]
二 .python實現ping返回延遲簡單版本
from ping3 import ping def ping_host(ip): """ 獲取節點的延遲的作用 :param node: :return: """ ip_address = ip response = ping(ip_address) print(response) if response is not None: delay = int(response * 1000) print(delay,"延遲") # 下面兩行新增的 ping_host('www.baidu.com')
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