How to send HTTP GET request from remote host using SSH connection in Python?
Question:
I’m using an SSH connection with Paramiko.
My code:
client = paramiko.SSHClient()
client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
client.connect(hostname=remote_host, username=remote_user, password=remote_password,
port=remote_port)
How to send HTTP GET request from connected remote host (use it like a proxy)?
I’ve found solution according to the answer:
with SSHTunnelForwarder(
ssh_address_or_host=(remote_host, remote_port),
ssh_username=remote_user,
ssh_password=remote_password,
remote_bind_address=("www.python.org", 80),
) as tunnel:
conn = http.client.HTTPConnection("127.0.0.1", port=tunnel.local_bind_port)
conn.request("GET", '/')
Answers:
There are two options:
External tool
Use any tool available on the SSH server that can send the HTTP request. E.g. curl or wget:
curl https://www.example.com/
And execute it using Paramiko: Python Paramiko – Run command
This solution is easier, but has the dependency on the command – So it’s also platform dependent.
Port forwarding
Forward a local port to the remote HTTP server port 80 and connect to the forwarded port using your local Python code.
You will find lot of examples how to forward a database port. Like this one: Enable Python to Connect to MySQL via SSH Tunnelling
In your case, you need to do the same, just instead of using a database client to connect to the forwarded port, you connect an HTTP client (like HTTPConnection).
Also in most cases, the database forwarding usually ends on the SSH server itself (localhost/127.0.0.1), while you want to connect further.
This solution is more complicated, but without external dependencies – So it’s platform independent. On the other hand, the port forwarding is a special privilege, that may be restricted on the server (but usually it is not). Before trying to implement it, you can test it with your SSH client.
I’m using an SSH connection with Paramiko.
My code:
client = paramiko.SSHClient()
client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
client.connect(hostname=remote_host, username=remote_user, password=remote_password,
port=remote_port)
How to send HTTP GET request from connected remote host (use it like a proxy)?
I’ve found solution according to the answer:
with SSHTunnelForwarder(
ssh_address_or_host=(remote_host, remote_port),
ssh_username=remote_user,
ssh_password=remote_password,
remote_bind_address=("www.python.org", 80),
) as tunnel:
conn = http.client.HTTPConnection("127.0.0.1", port=tunnel.local_bind_port)
conn.request("GET", '/')
There are two options:
External tool
Use any tool available on the SSH server that can send the HTTP request. E.g. curl or wget:
curl https://www.example.com/
And execute it using Paramiko: Python Paramiko – Run command
This solution is easier, but has the dependency on the command – So it’s also platform dependent.
Port forwarding
Forward a local port to the remote HTTP server port 80 and connect to the forwarded port using your local Python code.
You will find lot of examples how to forward a database port. Like this one: Enable Python to Connect to MySQL via SSH Tunnelling
In your case, you need to do the same, just instead of using a database client to connect to the forwarded port, you connect an HTTP client (like HTTPConnection).
Also in most cases, the database forwarding usually ends on the SSH server itself (localhost/127.0.0.1), while you want to connect further.
This solution is more complicated, but without external dependencies – So it’s platform independent. On the other hand, the port forwarding is a special privilege, that may be restricted on the server (but usually it is not). Before trying to implement it, you can test it with your SSH client.