jackyxiong/alaska

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alaska's Issues

Html & Dom

const input = document.createElement('input');
document.body.appendChild(input);
input.setAttribute('value', 'test');
input.setAttribute('hidden', true); 
document.execCommand('copy')

用js复制时，执行了input.setAttribute('hidden', true);会无法复制，且不报错。

requests 自定义请求源ip地址

from requests.adapters import HTTPAdapter
from requests.packages.urllib3.poolmanager import PoolManager

import requests
import gevent


class CustomSourceAddrAdpater(HTTPAdapter):

    def __init__(self, *args, **kwargs):
        source_address = kwargs.pop('source_address')
        assert isinstance(source_address, tuple) and len(source_address) == 2
        self.source_address = source_address
        super(CustomSourceAddrAdpater, self).__init__(*args, **kwargs)

    def init_poolmanager(self, connections, maxsize, block=False):
        self.poolmanager = PoolManager(num_pools=connections,
                                       maxsize=maxsize,
                                       block=block,
                                       source_address=self.source_address)


s = requests.Session()
a = CustomSourceAddrAdpater(source_address=(random.choice(ips), 0))
s.mount('http://', a)
resp = s.get(url)

原理就是socket连接时bind ip。urllib2也可以实现，但无法使用keep-alive属性。requests 可使用长连接的。
以下urllib2实现

class BindableHTTPConnection(httplib.HTTPConnection):
    def connect(self):
        """Connect to the host and port specified in __init__."""
        self.sock = socket.socket()
        self.sock.bind((self.source_ip, 0))
        if isinstance(self.timeout, float):
            self.sock.settimeout(self.timeout)
        self.sock.connect((self.host, self.port))


def BindableHTTPConnectionFactory(source_ip):
    def _get(host, port=None, strict=None, timeout=0):
        bhc = BindableHTTPConnection(host, port=port, strict=strict, timeout=timeout)
        bhc.source_ip = source_ip
        return bhc
    return _get


class BindableHTTPHandler(urllib2.HTTPHandler):
    def http_open(self, req):
        return self.do_open(BindableHTTPConnectionFactory(random.choice(ips)), req)