我没有得到与sr函数的HTTP答案。只是一个确认 [英] I dont get HTTP answer with sr function. Just an ACK

问题描述

我试图向google.com发送HTTP GET请求，但我得到的答案是ACK而不是HTML文件。这里是代码：

  def Make_Get（）：
 synR = IP（dst ='www.google.com '，ttl = 64）/ TCP（dport = 80，sport = randint（1024,65535），flags ='S'）
 synAckAN = sr1（synR）
 req =（IP（dst = www.google.com）/ TCP（dport = 80，sport = synAckAN [TCP] .dport，seq = synAckAN [TCP] .ack，ack = synAckAN [TCP] .seq + 1，flags ='A'）/ GET / HTTP / 1.0 \\\
\\\
）
 
 ans，a = sr（req）
 return ans 
  

这是我得到的两个数据包：

 ### [IP] ### 
版本= 4 
 ihl =无
 tos = 0x0 
 len =无
 id = 1 
 flags = 
 frag = 0 
 ttl = 64 
 proto = tcp 
 chksum = None 
 src = 192.168.233.128 
 dst = 216.58.214.100 
 \options \ 
 ### [TCP] ### 
 sport = 35534 
 dport = http 
 seq = 1 
 ack = 1964930533 
 dataofs = None 
 reserved = 0 
 flags = A 
 window = 8192 
 chksum = None 
 urgptr = 0 
 options = {} 
 ### [Raw] ### 
 load ='GET / HTTP / 1.0 \\\
\\\
'
无
 
 
 ### [IP] ### 
版本= 4L 
 ihl = 5L 
 tos = 0x0 
 len = 40 
 id = 32226 
 flags = 
 frag = 0L 
 ttl = 128 
 proto = tcp 
 chksum = 0x6425 
 src = 216.58.214.100 
 dst = 192.168.233.128 
 \options \ 
 ### [TCP] ### 
 sport = http 
 dport = 35534 
 seq = 1964930533 
 ack = 18 
 dataofs = 5L 
 reserved = 0L 
 flags = A 
 window = 64240 
 chksum = 0xe5e6 
 urgptr = 0 
 opt ions = {} 
 ### [Padding] ### 
 load ='\x00\x00\x00\x00\x00\x00'
 None 
  

当我发送这个数据包时，

  ### [以太网] ### 
 dst = 00：0c：29：bb：8e：79 
 src = 00：50：56：e9：b8：b1 
 type = 0x800 
 ### [IP] ### 
 version = 4L 
 ihl = 5L 
 tos = 0x0 
 len = 517 
 id = 32136 
标志= 
 frag = 0L 
 ttl = 128 
 proto = tcp 
 chksum = 0x5004 
 src = 172.217.20.100 
 dst = 192.168.233.128 
 \options\ 
 ### [TCP] ### 
 sport = http 
 dport = 1928 
 seq = 1828330545 
 ack = 18 
 dataofs = 5L 
保留= 0L 
标志= FPA 
窗口= 64240 
 chksum = 0x8b5f 
 urgptr = 0 
 options = [] 
 ### [HTTP] ### 
 ### [HTTP Response] ### 
 Status-Line = u'HTTP / 1.0 302找到'
接受范围=无
年龄=无
 E-Tag = None 
 Location = u'http：//www.google.co.il/？gfe_rd = cr& ei = 9fiTV6P6FuWg8weei7rQDA'
 Proxy-Authenticate = None 
 Retry-After = None 
 Server = None 
 Vary = None 
 WWW-Authenticate = None 
 Cache-Control = u'private'
 Connection = None 
 Date = u'Sat，23 Jul 2016 23:08:37 GMT'
 Pragma = None 
 Trailer = None 
 Transfer-Encoding = None 
 Upgrade = None 
 Via = None 
 Warning = None 
 Keep-Alive = None 
 Allow = None 
 Content-Encoding = None 
 Content-Language = None 
 Content- Length = u'261'
 Content-Location = None 
 Content-MD5 = None 
 Content-Range = None 
 Content-Type = u'text / html; charset = UTF-8'
 Expires = None 
 Last-Modified = None 
 Headers = u'Date：Sat，23 Jul 2016 23:08:37 GMT \r\\\
Content-长度：261 \r\\\
Content-Type：text / html; charset = UTF-8 \r\\\
位置：http://www.google.co.il/?gfe_rd=cr&ei=9fiTV6P6FuWg8weei7rQDA\r\\\
Cache-Control：private'
 Additional-Headers = None 
 ### [Raw] ### 
 load ='< HTML>< HEAD>< meta http-equiv =content-typecontent =text / html; charset =移动< / H1> \\\