TcpProxy | A high performance tcp proxy server | Proxy library
kandi X-RAY | TcpProxy Summary
kandi X-RAY | TcpProxy Summary
Yet another tcp proxy server.
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Top functions reviewed by kandi - BETA
- Initialize the channel
- Close the connection
- Helper method to close the channel
- Release object
- Main entry point
- Start the server
- Get proxy host list
- Called when a channel is active
- Called when the outbound channel is ready
- Initialize the pipeline
- Determine if the TCP proxy server should be debug
- Set the writeability changed on the channel
- Set auto read for inbound mode
- Sends a message to the proxy
- Gets the inbound channel
- Closes the proxy backend channel
- Called when an exception occurs
- Close the channel
- Close an exception handler
- Initialize the handler
- Handles incoming messages
- Called when a channel is inactive
TcpProxy Key Features
TcpProxy Examples and Code Snippets
Community Discussions
Trending Discussions on TcpProxy
QUESTION
I am trying to set TCP idleTimeout via an Envoy Filter, so that outbound connections external domain some.app.com will be terminated if they are idle for 5s:
ANSWER
Answered 2021-May-11 at 09:41This is a community wiki answer. Feel free to expand it.
As already discussed in the comments, the EnvoyFilter was not yet supported in Istio version 1.2 and actually that version is no longer in support since Dec 2019.
I strongly recommend upgrading to the latest Istio and Envoy versions. Also, after you upgrade please notice that the filter name you want to use was deprecated and replaced. You should now use envoy.filters.network.tcp_proxy instead of envoy.tcp_proxy.
Please remember that things are getting deprecated for a reason and keeping the old versions will sooner or later bring you more trouble. Try to keep things more up-to-date.
More details can be found in the latest docs.
QUESTION
I have TCP proxied a service, using envoy. How can I add external authorization to it?
following is my envoy.yaml:
ANSWER
Answered 2021-Apr-21 at 14:41You'll need to insert the envoy.filters.network.ext_authz filter into the filter chain before the envoy.filters.network.tcp_proxy and setup a cluster that will actually make the Authz decision.
The envoy docs have a good example to follow.
QUESTION
We have set up Istio, and we are using ISTIO ingress gateway for inbound traffic. We have set up TLS for TCP port. Sample code can be found here.
We also enabled logs by following this ISTIO guide
We tested the TLS connection using openssl and it works fine.
However, when we try to connect from an application, the TLS negotiation fails. I have provided more details with wireshark here
We would like to get logs from ISTIO on the TLS negotiation ... and find why it fails.
Istio Gateway YAML
...ANSWER
Answered 2020-Aug-14 at 15:09After getting the message of no matching filter chain, I found the filter chain for the port 31020 with the domain that I have provided in my Gateway config. It looks like while connecting my application(ODBC), the host was not being provided.
The solution is simply to replace the host domain by '*'
QUESTION
I am trying to develop a TCP proxy library using Python 3. I have based my code on Python 2 example code, written by LiveOverflow. His original code is found in his video. My proxy library is intended to work like this: there is a proxy object containing a server-side object and a client-side object. The client-side object mimics a server, while the server-side object mimics a client. The two pass data to each other through the parent proxy object. To initiate the proxy, the script using the library instantiates the proxy with the port the client side is going to host on and the ip address and port the server side is going to connect to. Here is the code:
TCP.py:
...ANSWER
Answered 2020-Aug-02 at 02:15I have solved the issue. Browsers use a random port to send http/https requests. As I understand, this can be circumvented by adding a colon and the desired port number to the end of the url.
QUESTION
I am exploring a way to duplicate traffic from a netty proxy to two servers. i.e. instead of the general implementation:
Server1 -> Proxy -> Server 2
I would like to do the following:
Server 1 -> Proxy -> Server 2 and Server 3
Server3->Proxy is dropped
Hence each message is sent to both server 2 and server 3.
I just have one constraint that the communication between proxy and server 2 should not be blocked because of server 3 (in case server 3 is slow etc.).
I am starting from the following code: https://github.com/dawnbreaks/TcpProxy
Unfortunately, I am not too familiar with netty, but the implementation seems highly optimal for my purpose. I would like to understand:
- How to create a new channel for Server 3
- Which API to override for communication to Server 3
- How to read and drop messages from Server 3
ANSWER
Answered 2017-Mar-08 at 21:00saw your chat in IRC #netty.
A couple of things here. Your Proxy would need to have a server side that Server 1 connects to. Then the Server 2 and Server 3 need to either except a connection from the Proxy or you could use UDP (depending) to receive data from the Proxy.
Netty has an example of a proxy server. This would work in your case and its really easy for the third part. Simply put you would use the existing example and open a new connection which would be to Server 3. Now what you can do is take both channels from the Proxy (Client Connections to server 2 and 3) Put them in a channel group and write one time to two servers!. My example code that is edit will... allow communications from server 1 to server 2 through the proxy mutually and allow for mutual talk while server 3 only can receive data but if server 3 replies to the proxy, the proxy doesn't do anything. You may want to add a handler to release buffers or handle data written back that shouldn't be from server 3. Also from here this should get you started but check out netty documents, api, examples and ppts they are super helpful!
I will attach some modified code to show you and here is a link to the examples.
So for the Example you would edit the HexDumpProxyFrontendHandler.class and just add a second Bootstrap for the new client for Server 3.
Current Code
QUESTION
When I run a NodeJS TcpProxy (the one below) in my localhost, it works (I mean, it console.logs "Hi" when visiting localhost through a browser). But, when I launch a container with that same program inside it, it doesn't work.
TcpProxy code (index.js):
...ANSWER
Answered 2017-Jan-18 at 08:45Your script listens on 127.0.0.1, which is your local loopback device.
In this case its the loopback device of your container, not 'your' localhost.
I am assuming that expose and -p are publishing the port of the ip address of your container to your host. Not its loopback device.
So you need to listen on your external ip address. Try listening to 0.0.0.0
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install TcpProxy
You can use TcpProxy like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the TcpProxy component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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