I'm trying to run a bottle server such that some routes run on one port, and the others run on another port.
However, reading through the documentation has proved no fruits: https://bottlepy.org/docs/dev/bottle-docs.pdf.
Is this possible with bottle?
No, you can not route to multiple ports.
A server needs an address and a port to listen to. So, routing will be done after address and port are set in server.
Related
I'm creating an extremely simple Vega visualization viewer: it's a one file module that serves a base HTML page containing just the Vega graphic and an HTML5 EventSource of updates. The user (me) is working in a Python shell through ssh, creates an object representing the viewer, which prints its IP and port for the user to paste into their (my) web browser. This HTTP server doesn't serve files or take input from clients, so I don't see any security concerns.
The part I'm unsure of is how to set (host, port) such that my web browser can find the HTTP server running in the remote Python. I've been experimenting all afternoon, and I don't know if I'm misunderstanding what's supposed to happen or if the servers I use have changed their access policies.
Here's a minimal example:
import SimpleHTTPServer
import SocketServer
Handler = SimpleHTTPServer.SimpleHTTPRequestHandler
httpd = SocketServer.TCPServer((host, port), Handler)
print(httpd.server_address)
httpd.serve_forever()
If I'm running this locally and want to ensure that outside viewers cannot access it, do I set host to "127.0.0.1" because that means a client would have to access it as 127.0.0.1, which can only happen locally? In this case, port can be 0 to get any open port.
If I'm running this remotely want to to ensure that outside viewers can access it, do I set host to "" or "0.0.0.0" because that means that a client can access it as any address that makes its way to the server? In this case, I might not be able to set port to 0 because many of those ports might be blocked, or is the OS smarter about this?
Basically, how is access control in Python's SocketServer supposed to work?
This is basic TCP. Nothing to do with Python.
If you listen at 127.0.0.1, only clients running in the same host can connect.
If you listen at 0.0.0.0, anybody can connect, firewalls permitting.
I have a simple Apache+Flask website running inside a basic Vagrant+VirtualBox environment. I can access my site fine at 127.0.0.1:8080.
The question & problem is, how do I configure Vagrant to pass the real clients IP address to Apache+Flask?
request.remote_addr always returns 10.0.2.2 no matter what client is connecting from within my LAN.
For example the machine running Vagrants IP is 192.168.1.5. From a client i.e. another laptop on my LAN with IP of 192.168.1.7, would hit the site # 192.168.1.5:8080, but 192.168.1.7 is not the remote_addr in vagrant/flask+apache, its always 10.0.2.2
Thanks!
The most easy way to do that would be a bridged network. The VM will receive an IP address in your (outside) network, e.g. 192.168.1.10.
See https://docs.vagrantup.com/v2/networking/public_network.html on how to configure that.
Server :
HOST = 'localhost'
PORT = 8000
Client :
HOST = '#MyIPAddress' (found on http://www.ip-adress.com/)
PORT = 8000
Client fails connecting to the server. It works if client.HOST = 'localhost' to but that's not the point. I forwarded my router to open that port. I want it to work over the internet. I tried stuff like https://pagekite.net/ but I couldn't make it work.
I would like to see any complete "hello world" example wich would send "hello world" through the internet between two clients. Either server runs on my computer or on a hosted platform I would like to see a full concrete example.
If your server and client are located at the same machine, then just
set client.HOST = 'localhost' as you said.
If your server and client are located at different machines, you
should try ping through each other.
If your server is behind an NAT device, you need to enable port
forwarding (such as upnp, dmz etc.) in order to make sure tcp
request from your client could reach your server first. What your
said sounds more like a network issue than a programming issue. Hope
this could help you.
I am using Python SocketServer to implement a socket server.
How can I find out if client used example.com to connect to me, or used x.x.x.x?
Actually, I need something like virtual hosts in Apache.
Googling didn't come up with any notable result.
Thanks
virtual hosts in Apache works because it is specified in the HTTP RFC to send the host header. Unless your client similarly sends the name it used to connect, there is really no way to find this out. DNS lookup happens separately and resolves a host name to an IP. The IP is then used to connect. – Kinjal Dixit
I wrote a simple python script using the SocketServer, it works well on Windows, but when I execute it on a remote Linux machine(Ubuntu), it doesn't work at all..
The script is like below:
#-*-coding:utf-8-*-
import SocketServer
class MyHandler(SocketServer.BaseRequestHandler):
def handle(self):
data_rcv = self.request.recv(1024).strip()
print data_rcv
myServer = SocketServer.ThreadingTCPServer(('127.0.0.1', 7777), MyHandler)
myServer.serve_forever()
I upload it to the remote machine by SSH, and then run the command python server.py on the remote machine, and try to access to xxx.xxx.xxx.xxx:7777/test with my browser, but nothing is printed on the remote machine's teminal...any ideas?
UPDATE: Problem solved, it's a firewall issue, thanks you all.
You are binding the server to 127.0.0.1, the IP address for localhost. This means the server will only accept connections originating from the same machine; it won't recognize ones coming from another machine.
You need to either bind to your external IP address, or bind to a wildcard address (i.e. don't bind to any particular IP address, just a port). Try:
myServer = SocketServer.ThreadingTCPServer(('0.0.0.0', 7777), MyHandler)
You are binding to 127.0.0.1:7777 but then trying to access it through the servers external IP (I'll use your placeholder - xxx.xxx.xxx.xxx). 127.0.0.1:7777 and xxx.xxx.xxx.xxx:7777 are different ports and can be bound by different processes IIRC.
If that doesn't fix it, check your firewall, many hosts set up firewalls that block everything but the handful you are likely to use
Try with telnet or nc first, telnet to your public ip with your port and see what response you get. Also, why are accessing /test from the browser? I don't see that part in the code. I hope you have taken care of that.