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Questions tagged [client-server]

DO NOT USE ALONE. The client-server model is a centralized model, in which a server performs a specialized service (such as HTTP, SMTP, etc.) for multiple clients on request. Use for issues regarding client server communication. Use with a appropriate language tag(eg: [python]).

client-server
1 vote
0 answers
68 views

Full duplex named pipes on Windows

I would like to implement full duplex named pipe communications on Windows. The server needs to be in C++, and needs to be able to connect to multiple clients simultaneously. The client needs to be ...
Lorne's user avatar
  • 89
0 votes
1 answer
41 views

How can background.js send an XHR to a server in the context of a Chrome extension?

I want to build an extension that requires sending a message to a node.js server and receiving a response. It should do this automatically, which is why I can't implement this in popup.js. This is my ...
user25899957's user avatar
0 votes
0 answers
23 views

Access was blocked by CORS policy: Response to preflight request fails access control check

I get the following error: Access to XMLHttpRequest at 'client' from origin 'server' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-...
Ban ban ban Ban ban ban's user avatar
1 vote
0 answers
40 views

Errno 111 connection refused

I’m trying to write a program that transfers real-time video from a Seek thermal camera integrated with raspberry pi 3b+. The setup includes a flask server with websocket protocol and PC, where the ...
Nancy Mohammed's user avatar
0 votes
0 answers
21 views

Perform drag and drop event to all clients with socket.io

it's the first time i'm working with node.js, express and socket.io and i'm trying to perform a simple drag and drop option for all connected clients. Drag and drop is working but it is not rerendered ...
phibac's user avatar
  • 7
0 votes
0 answers
17 views

Will not run on postman no json response

When I run my code the specific json output does not show. For example like this: { "id": 1, "name": "John Doe", "email": "[email protected]", &...
Ayz C's user avatar
  • 1
1 vote
0 answers
24 views

Building an OCSP Responder

For Building an OCSP Responder I want to Build an OCSP Responder. For Building an OCSP what are the thing required, where to start please Help me in this problem I am new in this field i have basic ...
Kunal Sinha's user avatar
1 vote
0 answers
29 views

socket io - client with app rouer next 14

hi I try to connect to socket-io and I get this error, is there anyway i can fix this error? uncaughtException: TypeError: isValidUTF8 is not a functionat module.exports.isValidUTF8 (webpack-internal:...
Lin BM's user avatar
  • 11
0 votes
1 answer
89 views

TLS Connection successful with mismatched CA

Requirement: I'm working on the following requirement. I have two devices that act like server and a client communicating over a LAN cable. They exchange some data and I'm trying to secure the data ...
theAvidPhoenix's user avatar
-2 votes
1 answer
27 views

Wireshark didn't display the IP addresses and port numbers of the server and client, despite successful message exchange. How to fix this issue

set up UDP client-server communication and installed Wireshark on Ubuntu to monitor packet capture . However, Wireshark didn't display the IP addresses and port numbers of the server and client, ...
Niveditha K's user avatar
0 votes
0 answers
15 views

Not receiving large json data(more than 1024 size) from Server to Client during 1st time

Not receiving large json data(more than 1024 size) from Server to Client during 1st time. Scenario: Step1: Run CoAP Server Step2: Run CoAP Client (1st time called - Payload size is 1274, not getting ...
Gokul's user avatar
  • 1
0 votes
1 answer
45 views

Generic Types In Flat Buffer

I am having some trouble converting my games network communication from sending json to using flat buffers. How my games client / server communication works: We have a base class called GameMessage [...
Mitchell Houlton's user avatar
0 votes
1 answer
32 views

How to receive large data more than 1024 in CoAP Client

/* I am sending a response from CoAP server to CoAP client which is more than 1024 size. But, I am not able to receive the complete data in CoAP client. I could receive only 1024 size of data. API ...
Gokul's user avatar
  • 1
0 votes
0 answers
23 views

Boost async handler not being called

#include <boost/signals2.hpp> #include <boost/bind/bind.hpp> I am building a client server pair (simple echo server currently) and think I must have a design issue The following code works ...
Tom Davidson's user avatar
0 votes
0 answers
44 views

Encryption: How to recover encrypted primary key encrypted using PBKDF2 if password is lost by user? How can recovery mechanism be implmented?

As title says, I've generated primary key as: async function generateKey() { const key = await window.crypto.subtle.generateKey( { name: "AES-GCM", ...
xoro_anti's user avatar

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