networking

问题 I've been trying to code a server socket that accepts connections from multiple clients, a client socket that allows for a connection to the server and real time exchange of messages between multiple clients. I found only one working example, which doesn't produce any runtime errors, but if Client1 sends out a message, Client2 doesn't receive the message until Client2 sends a message of its own. This makes it very confusing to chat. I'm not sure how to modify the code, so that each time

问题 I have bacterial OTU table at all taxonomy levels. I want to plot network using igraph (or any other package). I have never created such plot so please if anyone know some tutorial link for beginner? OR If someone guide me with scripts, you time would be really appreciated. Thank you! 回答1: A relationship dataset in network analysis is made of, at least, one data.frame (or matrix) which describe the links and contains at least 2 cols, in order to indicate 'from' and 'to' link on the 2 first

问题 I am able to find out the BSSID of the acces point my computer is connected to in an local network. Is there a way to ping another computer in this network and find out the BSSID of the acces point that computer is connected to? Thanks 来源： https://stackoverflow.com/questions/61877466/is-there-a-way-to-find-out-the-bssid-a-computer-is-connected-to-in-a-local-netwo

问题 In "naked" Docker, I can use --network=host to make the host reachable from the container through the docker0 interface at 127.0.0.1 , or I can reach the host at 172.17.0.1 . Ostensibly docker-compose supports the host networking driver through network_mode: host . Unfortunately, this prevents me from using exposed ports. Containers created using docker-compose don't live on the docker0 interface, and hence can reach the host at some IP address like 172.18.0.1 or 172.19.0.1 , decided at

问题 I'm new to networking and I'm trying to write a simple TCP client. The first thing I have to do is to send my message length and wait for further instructions. Here's my code: s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.connect((TCP_IP, TCP_PORT)) s.send(bytearray(message_serialised_length)) data = s.recv(BUFFER_SIZE) s.close() print("response: {}".format(struct.unpack('>I', data))) Sometimes, i'm able to get a response and the program continues but other times I run into this

问题 I have created a chat application using python sockets and Tkinter and it all works perfectly locally however the Client is unable to connect to the server remotely (when I enter my public IP address as the host) I have already fully port-forwarded my network and I know how to port forward very well and when I run an online Port Open scanner that checks if a port is open it states that the port is open!? I have port-forwarded my router on a number of ports and updating the client and server

问题 I am not very knowledgeable on computer networks, but my understanding is that the ping command on Linux tests internet connection by computing the amount of sent and received packages to some IP address. For this I often use the ping command if I am experiencing connection issues. But the results are ofter very counterintuitive: For example now I seem to have a perfect internet connection, but the results from a ping command to any address returns 100% packet loss >>> ping google.com PING

问题 Bit of an odd one. I noticed some query string stopped working on page load for a page on my website. Upon checking the network console of chrome and firefox, I can see that the page is returning a 403 forbidden error . This is odd, since the page seems to be loading correctly (except for query string not applying on page load). It's the only page on the site that seems to be doing it. Response Headers: cache-control: no-cache, must-revalidate, max-age=0 cf-cache-status: MISS cf-ray:

问题 Background Considering this url: base_url = "https://www.olx.bg/ad/sobstvenik-tristaen-kamenitsa-1-CID368-ID81i3H.html" I want to make the ajax call for the telephone number: ajax_url = "https://www.olx.bg/ajax/misc/contact/phone/7XarI/?pt=e3375d9a134f05bbef9e4ad4f2f6d2f3ad704a55f7955c8e3193a1acde6ca02197caf76ffb56977ce61976790a940332147d11808f5f8d9271015c318a9ae729" Wanted results If I press the button through the site in my chrome browser in the console I would get the wanted result : {

问题 tl;dr: I have a problem whereas a Port Forwarding is not working properly. The response never seems to come back (times out), despite seeing packets all the way. Situation In short: https://raspberry-ip:5555 should load https://server-ip:9999 but it doesn't despite the fact that the port forwarding seems to be working. I have a server which replies to port 9999 with a website. I can access directly from my laptop. I have a Raspberry Pi, which forwards the traffic to the server from local port