如何修复浏览器代理'Address already in use'错误？

Question

我仍在尝试使用browsermob-proxy(这里)来尝试在python硒测试期间监控网络流量(请参阅browsermobproxypy)。我正在使用以下脚本来测试它：

from browsermobproxy import Server
server = Server("/home/adietz/Projects/Invest/browsermob-proxy/browsermob-proxy-2.1.4/bin/browsermob-proxy")
server.start()
proxy = server.create_proxy()
from selenium import webdriver
profile  = webdriver.FirefoxProfile()
profile.set_proxy(proxy.selenium_proxy())
driver = webdriver.Firefox(firefox_profile=profile)

proxy.new_har("google")
driver.get("http://www.google.co.in")
proxy.har
server.stop()
driver.quit()

我不知何故设法安装了一个"browsermob.jar"文件(这里的文档中并没有很好地描述;你必须从这里下载jar文件)。我按如下方式启动代理：

java -jar ./browsermob-proxy-2.1.4/lib/browsermob-dist-2.1.4.jar --port 9090
Running BrowserMob Proxy using LittleProxy implementation. To revert to the legacy implementation, run the proxy with the command-line option '--use-littleproxy false'.
[INFO  2018-01-18T07:47:20,761 net.lightbody.bmp.proxy.Main] (main) Starting BrowserMob Proxy version 2.1.4 
[INFO  2018-01-18T07:47:20,782 org.eclipse.jetty.util.log] (main) jetty-7.x.y-SNAPSHOT 
[INFO  2018-01-18T07:47:20,802 org.eclipse.jetty.util.log] (main) started o.e.j.s.ServletContextHandler{/,null} 
[INFO  2018-01-18T07:47:20,885 org.eclipse.jetty.util.log] (main) Started SelectChannelConnector@0.0.0.0:9090 

然后我运行测试脚本

python tester1.py

但是，在日志中，我看到如下错误：

[WARN  2018-01-18T07:28:30,265 org.eclipse.jetty.util.log] (main) FAILED SelectChannelConnector@0.0.0.0:8080: java.net.BindException: Address already in use 
[WARN  2018-01-18T07:28:30,266 org.eclipse.jetty.util.log] (main) FAILED org.eclipse.jetty.server.Server@4b41e4dd: java.net.BindException: Address already in use 
[ERROR 2018-01-18T07:28:30,266 net.lightbody.bmp.proxy.Main] (main) Failed to start Jetty server. Aborting. java.net.BindException: Address already in use
at sun.nio.ch.Net.bind0(Native Method) ~[?:1.8.0_151]
at sun.nio.ch.Net.bind(Net.java:433) ~[?:1.8.0_151]
at sun.nio.ch.Net.bind(Net.java:425) ~[?:1.8.0_151]
at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223) ~[?:1.8.0_151]
at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74) ~[?:1.8.0_151]
at org.eclipse.jetty.server.nio.SelectChannelConnector.open(SelectChannelConnector.java:162) ~[browsermob-dist-2.1.4.jar:?]
at org.eclipse.jetty.server.AbstractConnector.doStart(AbstractConnector.java:356) ~[browsermob-dist-2.1.4.jar:?]
at org.eclipse.jetty.server.nio.SelectChannelConnector.doStart(SelectChannelConnector.java:240) ~[browsermob-dist-2.1.4.jar:?]
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:55) ~[browsermob-dist-2.1.4.jar:?]
at org.eclipse.jetty.server.Server.doStart(Server.java:269) ~[browsermob-dist-2.1.4.jar:?]
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:55) ~[browsermob-dist-2.1.4.jar:?]
at net.lightbody.bmp.proxy.Main.main(Main.java:64) [browsermob-dist-2.1.4.jar:?]

我最好的猜测是端口已经在使用中，或者其他东西无法正常工作。也许我需要在脚本中明确指定端口？但是怎么做呢？python文档实际上不存在...

补遗

• 查看源代码(！我想出了如何设置端口。我使用以下行在python脚本中定义服务器和端口：

  server = Server("/home/adietz/Projects/Invest/browsermob-proxy/browsermob-proxy-2.1.4/bin/browsermob-proxy"， {'port'：9090})

但是无论我设置什么端口，我总是收到以下错误：

Traceback (most recent call last):
File "tester1.py", line 5, in <module>
proxy = server.create_proxy()
File "/home/adietz/Projects/Invest/browsermob-proxy/venv_browsermob/local/lib/python2.7/site-packages/browsermobproxy/server.py", line 40, in create_proxy
client = Client(self.url[7:], params)
File "/home/adietz/Projects/Invest/browsermob-proxy/venv_browsermob/local/lib/python2.7/site-packages/browsermobproxy/client.py", line 37, in __init__
"Another server running on this port?n%s..." % content[:512])
Exception: Could not read Browsermob-Proxy json
Another server running on this port?
java.lang.RuntimeException: java.net.BindException: Address already in use
at org.littleshoot.proxy.impl.DefaultHttpProxyServer.doStart(DefaultHttpProxyServer.java:545)
at org.littleshoot.proxy.impl.DefaultHttpProxyServer.start(DefaultHttpProxyServer.java:489)
at org.littleshoot.proxy.impl.DefaultHttpProxyServer.access$700(DefaultHttpProxyServer.java:69)
at org.littleshoot.proxy.impl.DefaultHttpProxyServer$DefaultHttpProxyServerBootstrap.start(DefaultHttpProxyServer.java:858)
at net.lightbody.bmp.Brows...

所以一定有其他东西工作不正常...

也许我会自己编写这样的代理。似乎是更快的方法...

Answer 1

我们可以使用所需的端口启动 BMP 服务器，如下所示。 服务器接受服务器参数的字典对象。

from browsermobproxy import Server
dict={'port':8090}
server = Server(path="C:\Projects\BrowserMobProxy\bin\browsermob-proxy",options=dict)
server.start()
proxy = server.create_proxy()
from selenium import webdriver
profile  = webdriver.FirefoxProfile()
profile.set_proxy(proxy.selenium_proxy())
driver = webdriver.Firefox(firefox_profile=profile)

proxy.new_har("google")
driver.get("http://www.google.co.uk")
proxy.har # returns a HAR JSON blob
server.stop()
driver.quit()

Answer 2

用这个初始化服务器 -

proxyserver =  Server(
path="/root/tests/bsp_usecase_tests/bin/browsermob-proxy",
options={'existing_proxy_port_to_use': 8090})

Browsermob-Proxy 中的内部代码正在'options'名为'existing_proxy_port_to_use'的字典中查找键，否则它使用默认值，即空字典。