I'm running a local server with my Flask Python program. I am able to GET request the server with curl:
curl http://localhost:5000/ -d "input_data=something" -X GET
and everything goes well.
However, if I try to call it from another Python program this way:
import requests
r=requests.get('http://localhost:5000', json={"input_data": "something"})
I get an error:
HTTPConnectionPool(host='localhost', port=5000): Max retries exceeded with url: / (Caused by NewConnectionError('<requests.packages.urllib3.connection.HTTPConnection object at 0x7fe3b510a310>: Failed to establish a new connection: [Errno 111] Connection refused',))
What is the problem here?
Besides, is there a way to insert the server program into a standard Linux pipeline? I mean something along this logic (of course, I know that this concretely doesn't work):
cat "something" | http://localhost:5000 > output
Related
This question already has an answer here:
Python requests in Docker Compose containers
(1 answer)
Closed last month.
I want to be able to connect to a third-party .NET API I am running as a docker image within a container. When I connect to the ip address and port on my browser it works though when I try and run a get request in python it does not. I am not sure what I am doing wrong.
The Django python application is an image within the container using 0.0.0.0:8000.
This is the docker-compose.yml file for a .NET image I am running from within a container:
mt4rest:
image: mt4rest:latest
ports:
- "0.0.0.0:5000:80"
Here are the ports as per docker inspect
"Ports": {
"443/tcp": null,
"80/tcp": [
{
"HostIp": "0.0.0.0",
"HostPort": "5000"
}
]
},
When I run
http://0.0.0.0:5000/Ping
or
http://127.0.0.1:5000/Ping
in my browser, I get OK though when I run the same endpoints in Python:
response = requests.get('http://0.0.0.0:5000/Ping')
or
response = requests.get('http://127.0.0.1:5000/Ping')
I receive the following error:
requests.exceptions.ConnectionError: HTTPConnectionPool(host='0.0.0.0', port=5000):
Max retries exceeded with url: /Ping (Caused by
NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7fe7aa5af640>:
Failed to establish a new connection: [Errno 111] Connection refused'))
or
requests.exceptions.ConnectionError: HTTPConnectionPool(host='127.0.0.1', port=5000):
Max retries exceeded with url: /Ping (Caused by
NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f6322e2b640>:
Failed to establish a new connection: [Errno 111] Connection refused'))
I understand this to mean that the address for the request is not found.
I am not sure what I am doing wrong.
Lets call your host as HOST_BASE.
You are having two containers, one is exposing 5000 on host. Its HOST_BASE:5000.
Other is your python-app container.
Now, you are running another python-app in container on host HOST_BASE. And try to hit: http://0.0.0.0:5000, which is not accessible. Note: its 0.0.0.0 is localhost of the container itself.
You want to connect to HOST_BASE:5000, which is not localhost or 0.0.0.0
You need to configure networking between your two containers. Or, for simplicity, use --network host while running both of your container.
Hope that helps.
There is an acceptable answer for this question on stackoverflow which solves the problem:
Python requests in Docker Compose containers
I'm trying to run some code from this website but I don't understand why I get this error:
qbittorrentapi.exceptions.APIConnectionError: Failed to connect to qBittorrent. Connection Error: ConnectionError(MaxRetryError("HTTPConnectionPool(host='localhost', port=8080): Max retries exceeded with url: /api/v2/auth/login (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x000001FA519F5840>: Failed to establish a new connection: [WinError 10061] No connection could be made because the target machine actively refused it'))"))
The code in question:
import qbittorrentapi
# instantiate a Client using the appropriate WebUI configuration
qbt_client = qbittorrentapi.Client(
host='localhost',
port=8080,
username='admin',
password='adminadmin',
)
# the Client will automatically acquire/maintain a logged-in state
# in line with any request. therefore, this is not strictly necessary;
# however, you may want to test the provided login credentials.
try:
qbt_client.auth_log_in()
except qbittorrentapi.LoginFailed as e:
print(e)
# display qBittorrent info
print(f'qBittorrent: {qbt_client.app.version}')
print(f'qBittorrent Web API: {qbt_client.app.web_api_version}')
for k,v in qbt_client.app.build_info.items(): print(f'{k}: {v}')
# retrieve and show all torrents
for torrent in qbt_client.torrents_info():
print(f'{torrent.hash[-6:]}: {torrent.name} ({torrent.state})')
# pause all torrents
qbt_client.torrents.pause.all()
I'd really appreciate some help with this, thanks ahead :)
I wanted to know if it was possible to use New-PsSession and Invoke-Command to an exchange server using python only? I am doing testing and DON'T want to use the subprocess module but instead wanted to know if there are any python modules that can handle powershell commands to a remote server?
I usually use this to connect to the exchange server in powershell:
$password = ConvertTo-SecureString "SOMEPASSWORD" -AsPlainText -Force
$Cred = New-Object System.Management.Automation.PSCredential ("ENTEREMAILHERE", $password)
$ses = New-PSSession -Name "ENTEREMAILHERE" -ConnectionUri https://exchange.intermedia.net/powershell -ConfigurationName Hosting.PowerShell -Credential $Cred -Authentication Basic
What I tried
I tried googling some modules and came across two different modules but they both didn't seem to work for me.
I tried using pypsrp but I don't think I was able to configure it correctly
from httpx import BasicAuth
from pypsrp.powershell import PowerShell, RunspacePool
from pypsrp.wsman import WSMan
wsman = WSMan("https://exchange.intermedia.net/powershell", username="enteremail",
password="enterpassword",
auth="basic")
with RunspacePool(wsman) as pool:
ps = PowerShell(pool)
ps.add_cmdlet("Get-PSDrive").add_parameter("Name", "C")
ps.invoke()
# we will print the first object returned back to us
print(ps.output[0])
I get an error saying:
requests.exceptions.ConnectionError: HTTPSConnectionPool(host='https', port=443): Max retries exceeded with url: //exchange.intermedia.net/powershell:5986/wsman (Caused by NewConnectionError('<urllib3.connection.HTTPSConnection object at 0x000002449336F610>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed'))
I know the url works as I use it with powershell everyday.
Edit: After talking with #briantist I tried:
wsman = WSMan("exchange.intermedia.net", username="EMAILHERE",
password="PASSWORHERE",
auth="basic",
port=443,
path="powershell")
and it seemed like it was going to work but then it failed with:
Code: 2150858811, Machine: exchange.intermedia.net, Reason: The WS-Management service cannot process the request. The resource URI (http://schemas.microsoft.com/powershell/Microsoft.PowerShell) was not found in the WS-Management catalog.
I assume that is because the https:// was not there so I tried with the https:// and it gave the same error as earlier saying:
requests.exceptions.ConnectionError:
HTTPSConnectionPool(host='https', port=443): Max retries exceeded
with url: //exchange.intermedia.net:443/powershell (Caused by
NewConnectionError('<urllib3.connection.HTTPSConnection object at
0x0000020759047AC0>: Failed to establish a new connection: [Errno
11001] getaddrinfo failed'))
My experience with pysprp is mostly through Ansible since it powers the psrp connection plugin, but I did chat briefly with the library's creator who suggested using the host name and setting the path separately, like so:
WSMan("exchange.intermedia.net", port=443, path="powershell", ...)
Update: OP confirmed it working with this code:
from pypsrp.powershell import PowerShell, RunspacePool
from pypsrp.wsman import WSMan
wsman = WSMan("exchange.intermedia.net", username="ENTEREMAIL",
password="ENTERPASSWORD",
auth="basic", port=443, path="powershell")
with RunspacePool(wsman, configuration_name="Hosting.PowerShell") as pool:
print("hello")
Key points:
URI-based endpoints need to be split into hostname and path with pypsrp
If using a non-default configuration name, be sure to pass that along to the RunspacePool object as well
So I have pytests (made using requests) and I run them while my server is running, to test if they work. They work fine but currently, the base URL is hardcoded to port number 3000 since my server is running on port 3000. How can I make sure these pytests run even if my port number is not hardcoded, i.e. if my server is running on port 4080 then the tests will succeed without me having to hardcode the URLs.
I tried doing this:
URL = f"http://127.0.0.1:{sys.argv[1]}/user"
since I take in the first argument as my port number when running my server. This does not work though. Any other suggestions for a beginner? Thanks
requests.exceptions.ConnectionError: HTTPConnectionPool(host='127.0.0.1', port=3000): Max retries exceeded with url: /user (Caused by NewConnectionError(': Failed to establish a new connection: [Errno 111] Connection refused'))
Everytime I make an external request (including to google.com) I get this response:
HTTPConnectionPool(host='EXTERNALHOSTSITE', port=8080): Max retries exceeded with url: EXTERNALHOSTPARAMS (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x105d8d6d0>: Failed to establish a new connection: [Errno 8] nodename nor servname provided, or not known',))
It does seem that your server cannot resolve the hostname into IP, this is probably not Django nor Python problem but your server network setup issue.
Try to reach the same URL with ping tool / wget/curl or troubleshoot DNS with nslookup.