tcp_server | golang tcp server - | TCP library

by firstrow Go Version: Current License: MIT

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kandi X-RAY | tcp_server Summary

tcp_server is a Go library typically used in Networking, TCP, Docker applications. tcp_server has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

tcp_server

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Quality

Security

License

Reuse

Support

tcp_server has a low active ecosystem.

It has 377 star(s) with 133 fork(s). There are 19 watchers for this library.

It had no major release in the last 6 months.

There are 2 open issues and 6 have been closed. On average issues are closed in 45 days. There are 2 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of tcp_server is current.

Quality

tcp_server has 0 bugs and 0 code smells.

Security

tcp_server has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

tcp_server code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

tcp_server is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

tcp_server releases are not available. You will need to build from source code and install.

Installation instructions are not available. Examples and code snippets are available.

It has 138 lines of code, 12 functions and 2 files.

It has medium code complexity. Code complexity directly impacts maintainability of the code.

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tcp_server Key Features

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tcp_server Examples and Code Snippets

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Community Discussions

Trending Discussions on tcp_server

asyncio.sleep required after cancelling tasks?

Unable to read client's message using AnyEvent::Socket and tcp_connect (to a UNIX domain socket)

Python TCP sockets won't connect

winsock server send and receive simultaniously

What is the reason asio doesn't do any delay?

Asynchronous tcp server using boost's async_write results in bad file descriptor

Why in asio's example the tcp acceptor pattern uses shared_pointer model wrapping heap socket, while udp use stack socket?

I get a "Debug assertion failed" error after entering the username in my TCP_Client program

Requests not sending in Python3

NodeJs tcp socket receive chunk

QUESTION

asyncio.sleep required after cancelling tasks?

Asked 2022-Jan-24 at 13:28

To test a man-in-the-middle tcp proxy I have coded an echo tcp server and a tcp client. After each one of the tests I want the proxy and the server to go down, to make sure each test starts on a clean environment, so I have coded:

...

ANSWER

Answered 2022-Jan-23 at 19:58

i assume that right instance tearDown method, the class tearDownClass is invoked?

that error usually comes when you close the event loop before the tasks were finished. when you cancel a task, it immediately returns, but the task itself is not yet canceled but rather waits for the loop to throw it a CancelledError. so you should await for the task to receive it's termination error. if you close the event loop before the task got the chance to be thrown, it wont be considered canceled and youll get that error.

by making the self.loop.run_until_complete(asyncio.sleep(0.5)) call you did you actually did that in a non deliberate way.

the docs elaborate about that also checkout this answer

Source https://stackoverflow.com/questions/70823138

QUESTION

Unable to read client's message using AnyEvent::Socket and tcp_connect (to a UNIX domain socket)

Asked 2021-Oct-16 at 18:51

Running the following server and client scripts:

Server (updated):

...

ANSWER

Answered 2021-Oct-16 at 18:48

I am not sure what causes the "illegal seek error" yet, but I found something that at least works for now. The client needs to use a condition variable in the connection callback:

Source https://stackoverflow.com/questions/69596811

QUESTION

Python TCP sockets won't connect

Asked 2021-Sep-25 at 05:49

As part of a uni course, I have to write a simple python TCP client-server chat but I'm having issues getting the sockets in the server.py and client.py programs to connect.

After many attempts I decided to really strip back the program to just try to connect the sockets and have the client send one message to the server after they are connected.

I am running the two programs (server.py and client.py) on the same computer (macOS) in separate terminal windows. I have tried turning off the firewall and running the programs as well just in case that was somehow causing an issue.

My code is as below:

server.py - This is run first

...

ANSWER

Answered 2021-Sep-25 at 05:37

The issue is that, in the server.py code, you should replace serverSocket in the recvfrom line with clientSocket, since when you call accept right before that line, clientSocket (returned by accept) is a new socket specific to that connection.

Source https://stackoverflow.com/questions/69323314

QUESTION

winsock server send and receive simultaniously

Asked 2021-Feb-10 at 19:34

I'm new to WinSock, and I'm trying something out. I have client and server programs that are communicating with each other. If the client types something, the server will just echo it back. I want them to receive and send at the same time, so I put the client in non-blocking mode, and it works kind-of OK. But when I try to put the server in non-blocking, it crashes saying that recv() == SOCKET_ERROR.

So the question is : why can the client work in non-blocking, but the server can't? How can I solve this?

TCP_SERVER:

...

ANSWER

Answered 2021-Feb-10 at 19:34

You are not handling the case where send()/recv() are failing due to a WSAEWOULDBLOCK error, which is NOT a fatal error. It just means there is no work to be done at that moment, try again later.

For recv(), that means there are no bytes available to read from the socket's receive buffer. The socket will be in a readable state when there are bytes available to read from it, or the peer has performed a graceful disconnect.

For send(), it means the peer's receive buffer is full and can't receive new bytes until the peer reads some bytes to clear up buffer space. Any unsent bytes will have to be passed to send() again at a later time. The socket will be in a writable state when new bytes can be sent to the peer, and not in a writable state when the peer's buffer is full.

When your server accepts a client and tries to receive() from it, recv() is going to keep failing with WSAEWOULDBLOCK until the client actually sends something.

So, you need to handle WSAEWOULDBLOCK properly and retry as needed. Or better, use select() (or WSAAsyncSelect(), or WSAEventSelect(), or Overlapped I/O) to detect the socket's actual state to know when send()/recv() can be safely called without causing an WSAEWOULDBLOCK error.

Source https://stackoverflow.com/questions/66142819

QUESTION

What is the reason asio doesn't do any delay?

Asked 2021-Feb-03 at 22:33

I am new to asio.

Here is guide I was following writing my daytime tcp-server: https://think-async.com/Asio/asio-1.18.1/doc/asio/tutorial/tutdaytime3.html . I was trying to reproduce a reasonable example that would show that asunchronous code is actually asynchronous. I didn't modify anything else, just small piece of code in tcp_server class. I am adding this delay in order to see that after we are waiting timer to expire, we can gracefully handle other client connections/requests. So, did I miss something? Because in my case delay basically doesn't work ;(

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ANSWER

Answered 2021-Feb-03 at 22:33

void handle_accept(const tcp_connection::pointer &new_connection,
                       const asio::error_code &error) {

        asio::steady_timer timer(io_context_,  asio::chrono::seconds(5));

        std::cout << "Before timer" << std::endl;

        timer.async_wait(std::bind(&tcp_server::handle_wait, this, error, new_connection));
    }

Source https://stackoverflow.com/questions/66036431

QUESTION

Asynchronous tcp server using boost's async_write results in bad file descriptor

Asked 2020-Dec-14 at 20:07

First of all, I'm not a native English speaker, so I would probably make some grammar mistakes, sorry for that...

I'm trying to create an asynchronous TCP server using C++ and Boost. I have had success accepting clients and receiving messages from them, but I can't reply to their messages. What I want to achieve is having a method on the TCPServer class that replies to all the connected clients. I have created a method for doing so, but when I call to TCPServer::write I get a "Bad file descriptor" error on the TcpConnectionHandler::handle_write error argument.

Could you help me figuring out what I'm doing wrong?

tcp_server.h

...

ANSWER

Answered 2020-Dec-14 at 20:07

I slightly modified the code to be compatible with Boost 1.74.0.

Then I ran it with ASAN:

Source https://stackoverflow.com/questions/65285735

QUESTION

Why in asio's example the tcp acceptor pattern uses shared_pointer model wrapping heap socket, while udp use stack socket?

Asked 2020-Nov-26 at 21:57

Source code: https://think-async.com/Asio/asio-1.18.0/doc/asio/tutorial/tutdaytime7/src.html

tcp_server shows an intention to use socket on the heap, wrapped by a type called tcp_connection.

...

ANSWER

Answered 2020-Nov-26 at 14:21

Only to show different approaches ...
So considering the context, you may use one or another solution.

Source https://stackoverflow.com/questions/65018766

QUESTION

I get a "Debug assertion failed" error after entering the username in my TCP_Client program

Asked 2020-Nov-12 at 02:56

I am currently a student at Automatics and Applied Informatics. I have a project from Computer Networking, in which I need to make a chat application with the help of threads. Since now I made the receiving part of the connection for the server and made the client, but I get a debug assertion failed error when I run the program. Until now I only have the user connecting part. I really need some help with this because I am stuck.

...

ANSWER

Answered 2020-Nov-11 at 21:29

Well there's a clear problem here

Source https://stackoverflow.com/questions/64794213

QUESTION

Requests not sending in Python3

Asked 2020-Oct-31 at 15:28

I have an array with some of the requests I want to send. Basically the requests I am sending is the website + directory (in this case: arrays element). For example: http://randomwebsite.com/%0d%0aX-XSS-Protection:0%0d%0a%0d%0a23%0d%0a%3Cscript%20src%3Dhttp%3A%2F%2Fhttp://anotherwebsite.com%3E%0d%0a0%0d%0a/%2e%2e

My code:

...

ANSWER

Answered 2020-Oct-31 at 15:28

That is because the URLs aren't properly encoded.

Try to encode them using urllib.parse like this:

Source https://stackoverflow.com/questions/64621750

QUESTION

NodeJs tcp socket receive chunk

Asked 2020-Oct-22 at 06:33

const net = require('net')
const sockets = []
server.on('connection', sock => {
 log("tcp_server", "info", `Connected at ${sock.remoteAddress}:${sock.remotePort}`)

 sockets.push(sock);
    
 // Write the data back to all the connected, the client will receive it as data from the server
 sockets.forEach((sock, index, array) => {
             
 })




sock.on('data', data => {




})

// Add a 'close' event handler to this instance of socket
sock.on('close', data => {

})  // end sock.on
})  


 
server.listen(conf.port, conf.serverHost, () => {
    const address = server.address()
    const port = address.port
    const family = address.family
    const ipaddr = address.address
    
    log("tcp_server", "info", 'Server is listening at port ' + port)
    log("tcp_server", "info", 'Server ip :' + ipaddr)
    log("tcp_server", "info", 'Server is IP4/IP6 : ' + family)
})

...

ANSWER

Answered 2020-Oct-22 at 06:33

I found this code easysocket! similar to what i want i just made simple edit to the code and its work like charm

Source https://stackoverflow.com/questions/64113302

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