在本地运行python脚本有效，但通过travis-ci失败，这可能是什么原因？

Question

我编写了以下python脚本：

import httplib
conn = httplib.HTTPConnection("127.0.0.1:8080")
conn.request("HEAD", "/")
check = conn.getresponse()
print check.status, check.reason
if check.status == 200:
            exit(0)
else:
            exit(1)

从我的机器上运行它时，我得到正确的响应：

# python pytest.py
200 OK

但是，当Travis-CI在构建时运行脚本时，将引发以下错误：

$ python pytest.py
Traceback (most recent call last):
  File "pytest.py", line 4, in <module>
    check = conn.getresponse()
  File "/opt/python/2.7.12/lib/python2.7/httplib.py", line 1136, in getresponse
    response.begin()
  File "/opt/python/2.7.12/lib/python2.7/httplib.py", line 453, in begin
    version, status, reason = self._read_status()
  File "/opt/python/2.7.12/lib/python2.7/httplib.py", line 409, in _read_status
    line = self.fp.readline(_MAXLINE + 1)
  File "/opt/python/2.7.12/lib/python2.7/socket.py", line 480, in readline
    data = self._sock.recv(self._rbufsize)
socket.error: [Errno 104] Connection reset by peer
The command "python pytest.py" exited with 1.

编辑＃1：

这是构建日志： https : //travis-ci.org/geek-kb/tikal_assignment/builds/182633824

失败的原因可能是什么？

Answer 1

看起来您正在docker容器内的端口8080上运行服务：

Step 11 : CMD python manage.py runserver 0.0.0.0:8080

它就这样暴露给主机：

$ docker run -d -p 8080:8080 -t camelel/django

尝试从脚本连接到该端口，例如：

conn = httplib.HTTPConnection("127.0.0.1:8080")