仿照网上代码用pyqt4弄了一个浏览器，大多数网站都能访问了，也能访问flash了，但是诸如下面一些网站不能访问，求帮忙看看，附全部代码

import sys

from PyQt4.QtCore import *

from PyQt4.QtGui import *

from PyQt4.QtWebKit import *

import webbrowser



class WebPage(QWebPage):

    def __init__(self):

        super(WebPage, self).__init__()

 

    def acceptNavigationRequest(self, frame, request, type):

        if(type == QWebPage.NavigationTypeLinkClicked):

            if(frame == self.mainFrame()):

                self.view().load(request.url())

            else:

                webbrowser.open(request.url().toString())

                return False

        return QWebPage.acceptNavigationRequest(self, frame, request, type)



class MyBrowser(QWidget):



    def __init__(self, parent = None):

        super(MyBrowser, self).__init__(parent)

        self.createLayout()

        self.createConnection()



    def search(self):

        address = str(self.addressBar.text())

        if address:

            if address.find('://') == -1:

                address = 'http://' + address

            url = QUrl(address)

            self.webView.load(url)

            self.webView.page().setLinkDelegationPolicy(QWebPage.DelegateAllLinks)

            self.webView.page().linkClicked.connect(self.linkClicked)

            self.webView.show()

    def linkClicked(self, url):

        self.load(url)

        

    def createLayout(self):

        self.setWindowTitle("keakon's browser")



        self.addressBar = QLineEdit()

        self.goButton = QPushButton("&GO")

        self.sendButton = QPushButton("&Send")

        bl = QHBoxLayout()

        bl.addWidget(self.addressBar)

        bl.addWidget(self.goButton)

        bl.addWidget(self.sendButton)



        self.webView = QWebView()

        self.webSettings = self.webView.settings()

        self.webSettings.setAttribute(QWebSettings.PluginsEnabled,True)

        self.webSettings.setAttribute(QWebSettings.JavascriptEnabled,True)

        self.webView.setPage(WebPage())



        layout = QVBoxLayout()

        layout.addLayout(bl)

        layout.addWidget(self.webView)



        self.setLayout(layout)



    def createConnection(self):

        self.connect(self.addressBar, SIGNAL('returnPressed()'), self.search)

        self.connect(self.addressBar, SIGNAL('returnPressed()'), self.addressBar, SLOT('selectAll()'))

        self.connect(self.goButton, SIGNAL('clicked()'), self.search)

        self.connect(self.goButton, SIGNAL('clicked()'), self.addressBar, SLOT('selectAll()'))



        self.connect(self.sendButton, SIGNAL('clicked()'), sendtest)





def sendtest():

    import socket,sys

    import struct

    import binascii

    host="42.51.132.111"

    port=8000

    s=socket.socket(socket.AF_INET,socket.SOCK_STREAM)

    print s.getsockname()

    senddata = binascii.a2b_hex ("000000220004313030370A183534386665356637306366323332316432653162383762331006")

    print senddata

    print repr(senddata[36])

    s.send(senddata)



app = QApplication(sys.argv)



browser = MyBrowser()

browser.show()



sys.exit(app.exec_())