Question

我不确定以下代码出了什么问题。我正在尝试建立套接字连接，并想使用try-except处理所有错误，但会出错。在这种情况下，它会在TimeoutError上失败。

错误：

<ipython-input-101-07e71cdc89b9> in get_certificate(hostname, port)
     24         sock.close()
     25         return HostInfo(cert=crypto_cert, peername=peername, hostname=hostname)
---> 26     except socket.error as error:
     27         return
     28 

AttributeError: type object 'socket' has no attribute 'error'

代码：

from OpenSSL import SSL
from cryptography import x509
from cryptography.x509.oid import NameOID
import idna
import socket
from socket import socket
from collections import namedtuple

def get_certificate(hostname, port):
    hostname_idna = idna.encode(hostname)
    sock = socket()
    try:
        sock.connect((hostname, port))
        peername = sock.getpeername()
        ctx = SSL.Context(SSL.SSLv23_METHOD) # most compatible
        ctx.check_hostname = False
        ctx.verify_mode = SSL.VERIFY_NONE

        sock_ssl = SSL.Connection(ctx, sock)
        sock_ssl.set_connect_state()
        sock_ssl.set_tlsext_host_name(hostname_idna)
        sock_ssl.do_handshake()
        cert = sock_ssl.get_peer_certificate()
        crypto_cert = cert.to_cryptography()
        sock_ssl.close()
        sock.close()
        return HostInfo(cert=crypto_cert, peername=peername, hostname=hostname)
    except socket.error as error:
        return
import concurrent.futures
if __name__ == '__main__':
    with concurrent.futures.ThreadPoolExecutor(max_workers=4) as e:
        for hostinfo in e.map(lambda x: get_certificate(x[0], x[1]), HOSTS):
            if hostinfo == None:
                print("Data Not Available")
                continue
            else:
                print_basic_info(hostinfo)

如何使用Python套接字进行错误处理？

0 个答案: