1,224 questions
0
votes
1
answer
60
views
How to select what type of fields I should use in a protocol header
Getting into protocol development with Scapy, going through documentation and watching videos on Scapy but I'm a bit confused with field types. Let's assume something generic for a packet structure:
| ...
- 61
1
vote
1
answer
106
views
Ping/Pong message system in Java between clients and a server over TCP sockets
I need to create a connection between 4 clients and a server and they should communicate over a networkprotocol.
I'm quite clueless and I don't know what I need to implement in which class. I managed ...
- 11
0
votes
1
answer
109
views
How to close an HTTP TCP stream on the server after a request
I'm creating an Open Metrics HTTP source for a Prometheus server in Rust. I'd rather avoid pulling in a whole web server library (crate) because I control the infrastructure and pretending to answer ...
- 1,260
0
votes
0
answers
109
views
In a custom network protocol that prepends messages with their length, how do you prevent malicious packets from causing memory exhaustion?
For learning purposes, I'm writing a basic network protocol over TcpStreams. In order to delimit individual messages, I was using read_until, but because the data sent can contain any bytes, this can'...
- 348
0
votes
0
answers
63
views
Does internet router discard UDP packet with IP option data?
Problem description:
Does internet router discard UDP packet which has IP option data?
I have two hosts which both have internet IPv4 address, and installed ubuntu 20.04.
If I send normal UDP packet ...
0
votes
2
answers
206
views
Is TLS gRPC distinguishable from TLS HTTP2?
Or do they appear identical to a potentially hostile middle-box?
Notwithstanding profiling of traffic flows which may out gRPC.
TLS/JA3 fingerprints may also be a problem, but assume they are handled ...
- 11
0
votes
1
answer
93
views
How The network header is represented at the bit level [closed]
how the header structure in bit representation let's take the example icmp header because this icmp has fewest fields.
| TYPE | CODE | CHECKSUM |
CONTENT
Just for example then let's assign some ...
0
votes
1
answer
659
views
Installing latest protocol decoders in Sigrok PulseView
I can see that the Futaba SBus decoder is supported by the community but can't see a way to install it.
I have tried copying the files into a new folder alongside the existing decoder files but the ...
0
votes
0
answers
96
views
How to switch routing protocol midway from aodv to olsr in ns3?
How to implement routing protocol switching under ns3? For example, during simulation, switch from aodv protocol to olsr protocol?
The ns-3 version is 3.36.1.
- 65
1
vote
0
answers
423
views
HDLC encoding protocol
I will have to use the HDLC protocol on a synchronous RS485, but I don't understand the encoding algorithm very well.
If I have, for example, this condition:
Address: 0x01 (1 byte)
Control: 0x02 (1 ...
- 709
1
vote
1
answer
5k
views
How can server with HTTP 1.1 understand client that uses HTTP 2?
I'm confused because it looks for me like different sources says different things, I don't really understand it:
The "layer" refers to a design choice to introduce a new optimized encoding ...
- 13
1
vote
0
answers
675
views
Create Gstreamer RTSP Onvif server
Thanks in advance for any guidance. This issue is frustrating me.
I'm using deepstream SDK,deepstream-test1-rtsp-out sample as base code.
This sample sends video over the rtsp server, and it works. I ...
- 11
0
votes
0
answers
304
views
How does QUIC's multiplexing differ from that of HTTP/2 in detail
if Traefik receives a request for a webpage that includes images and a audio and the configuration specifies different servers for the different content types, does Traefik open individual streams for ...
-1
votes
1
answer
69
views
How to test IoT devices in the context of home automation?
suppose you have 4 home automation product – thermostat , speaker, screen , camera .We need to make sure the interoperability is working as expected .
what is the infra that we need to test it
What ...
- 19
0
votes
1
answer
140
views
How does application layer in OSI model conveys this information to Network layer if incoming data should be fragmented or not?
I wanted to ask something,
When an application running on our browser doesn't want its data packet to get fragmented, it uses Do Not Fragment bit, to signify that this packet must not be fragmented, ...
0
votes
1
answer
100
views
How can I solve this network problem that arose in my react project when using an aws rds?
Previously I was working on my project with a local database, but I have migrated to an aws database, I have already created my instance and everything seems to work properly (I am working on my ...
0
votes
2
answers
2k
views
Wireshark - lots of ACK but no SYN?
I need to figure out what type of malicious activity is present in this .pcapng file I have received for my coursework using wireshark, however I'm not asking anyone to solve it don't worry. I'm ...
1
vote
1
answer
168
views
Can a git repository use different transport protocols per branch?
Server blocks outgoing SSH on port 22.
Trying to connect a new repo to an existing private GitHub repo.
On server:
git init .
git remote add [email protected]:<github_username>/repo_name.git
...
- 111
0
votes
2
answers
437
views
HTTPClient GET with Body on a HTTPs
I have a requirement where, i need to send a body on a GET request, the .netFramework 4.7.2, throw an Protocol exception, but as far i read, is possible to send it using a WinHttpHandler, but I'm ...
1
vote
1
answer
98
views
Does incorrectly returning an HTTP status code break the protocol?
For instance, if a request failed due to no authorization, clients expect a 401. However, if a server returns a 200 but with a message indicating failure to authenticate, does this technically go ...
- 678
0
votes
1
answer
1k
views
Where can I get requestId for Network.getResponseBody?
I`m trying to write some tools with chrome Chrome DevTools Protocol https://chromedevtools.github.io/devtools-protocol/tot/Network/#method-enable.
I want get page ResponseBody and I don't know where ...
- 171
0
votes
0
answers
393
views
Why is DPDK also used by transmitter to send packets and not only used by the receiver?
I'm setting up a traffic generator using pktgen-DPDK. What am having a hard time understanding is why DPDK plays a part when sending packets. From what I understand, when the receiver gets a packet ...
- 122
0
votes
1
answer
668
views
Are there any ways to monitor all HTTP protocols and block certain ones using a single script on WIndows?
I want to write a program that can monitor all system HTTP/HTTPS protocols used to open the default browser, and block certain ones, automatically changing certain requested URL into another. The ...
- 41
-1
votes
2
answers
203
views
What is network protocol?
I want to know exactly what a Network Protocol is?Almost all the definitions on the internet say "its a set of rules" But i want to know how and where these rules exist? is it a piece of ...
- 588
0
votes
0
answers
67
views
How to implement in DVMRP, MOSPF in NS2
I am trying to implement the above multicast protocol using ns2, but i am unable to find correct source on how to build the protocol.
I read through the documentation, all they said about was ...
0
votes
1
answer
157
views
Omnetpp and Inet 4: Run LEACH protcole
I am trying to run leach protocol as described in LEACH without success. Any help will be appreciated. Thanks!!!
I reinstall it by fellowing the descriptions provided this linlk and I still get the ...
0
votes
0
answers
44
views
When to include which TCP options into the segment
Cheers!
I'm working on a custom TCP implementation for a specific usecase, and the hope is that it should be able to chat with the wider world. I'm currently a little confused when it comes to TCP ...
- 121
0
votes
1
answer
437
views
is Eclipse/Californium CoAP observer much slower than Aiocoap observer?
I'm trying to build a system in which I can connect some devices to a server over the internet.
I want to stream some data over CoAP (10-30FPS), frame size = 3KB.
Firstly, I used Aiocoap, it sends up ...
0
votes
1
answer
1k
views
Are there any alternative internet addresses to IPv4 and IPv6?
When I hear/read about internet address, it is always IPv4 address or its successor IPv6 address? But as far as I know, these are not built into the internet itself. Instead, these addresses are ...
- 3,424
2
votes
0
answers
291
views
c#, server-client desktop application, using http/https ports for communication with high amount of data
I have been looking around the internet to see what protocols are available for the client/server communication. I'm currently not able to find a durable solution for my problem, maybe looking the ...
- 674
0
votes
1
answer
229
views
Network Data Encapsulation Process
A question about how network data traverses through the internet.
I'm wondering whether the encapsulation/de-capsulation process happens at each hop while a request is being sent through the internet. ...
- 13
0
votes
1
answer
699
views
How to force wireshark to show protocol names?
As shown in the screenshot above, the protocol column always shows correct signs rather than the actual protocol name. The wireshark version is 3.6.5.
How to force wireshark to show protocol names?
- 44.6k
1
vote
1
answer
334
views
Apache Telnet Client does not recevie non-ASCII characters
I've been trying to useorg.apache.commons.net.telnet.TelnetClient and I am having trouble to receive non-ASCII characters (in my case polish chars like ą,ę,ć,ź and few others). The problem is not on ...
- 21
0
votes
0
answers
131
views
How to read in "\r\n" as a string? trying to split data from an incoming message
I am having an issue trying to receive a string that I need to split as one part of the string has a name and the other part of the string has a location. although I am unsure how to split this data, ...
1
vote
1
answer
1k
views
Could a parallel redundancy protocol "PRP" be implemented over Debian?
I want to connect a PC to an existing PRP topology, this PC have two Ethernet ports.
I have been reading up a lot about PRP protocol, but i don't know if i can setup the PRP protocol over a linux ...
- 11
0
votes
0
answers
406
views
Fragmentation over the Transport layer (UDP)
A theoretical question.
How can Fragmentation be implemented over the transport layer in the OSI model?
How can I "change" the UDP protocol to support that thing?
0
votes
1
answer
238
views
How to return HTTP streaming errors? (especially in Rust)
How a streaming (e.g. a sound or video) HTTP server should report failure in the DB from which it streams (when it already streams, 503 header cannot be generated).
The client should be able to ...
- 5,909
3
votes
1
answer
868
views
UDP & TCP Protocols at the same time in Rust [closed]
I'm developing an application in Rust in which I need to transfer two types of data to a server on the Internet:
Lots of "less important" information, for which I would use the UDP protocol....
0
votes
1
answer
873
views
How to use Vue-CLI-service serve on HTTP-2?
By default, Vue-CLI-service serves on HTTP 1.1. Is there any way to serve it on HTTP-2?
1
vote
1
answer
379
views
Why socks5 UDP association terminates when the TCP connection that the UDP ASSOCIATE request arrived on terminates?
As socks5 rfc says,
A UDP association terminates when the TCP connection
that the UDP ASSOCIATE request arrived on terminates.
I wonder, doesn't "the TCP connection that the UDP ASSOCIATE ...
- 13
-1
votes
1
answer
179
views
The torrent program was stopped by the DoS attack. I want to know the reason
When a qBittorrent torrent client (A) shares a file (Seeding == A), the attacker implemented UDP flooding on the IP and PORT used by Qbittorrent. As a result, file sharing was not possible, and other ...
- 25
0
votes
1
answer
536
views
What does protocols mean in a computer system
We know that a protocol is a rule that computers follow so that they can effectively communicate with each other.
But when we talk about rules, the question arises, what are these rules.?
For example, ...
1
vote
1
answer
826
views
Create QRCode to be opened URL in browser
In my application I need to show a QRCode that embeds a URL to be opened in a browser.
I'm using the Nayuki library in my Qt/C++ application and I encode this string:
"http://mydevice.local"
...
- 5,355
0
votes
1
answer
837
views
How get access to Netwrok response area with Chrome DevTools Protocol?
I`m trying to get access to an area with a Network response
I`m using the following code, but it does not work.
import websocket
import json
from pprint import pprint
ws = websocket.WebSocket()
...
- 61
1
vote
2
answers
2k
views
Calculating distance between two computers in a local network using ping
Just wondering, would it be possible to use the ping "time" to calculate the distance between two local computers / machines ?
- 21
1
vote
1
answer
558
views
Concept of URL path is supported only at application layer level?
I'm writing my own client and server, they are implement my own application level protocol. For transport layer TCP is used. For internet layer IPv4 is used. Nor TCP header, nor IPv4 header not ...
- 1,053
0
votes
1
answer
69
views
Doubts about network protocols and UseNet
Sorry for my ignorance , but this subject has been stressing me for days
I currently read in a book about networks that there is a UseNet that is like a blog , but uses a different protocol to ...
-1
votes
1
answer
186
views
Is ARP contained into MAC sublayer (OSI Model)?
Well, I've read that the Data Link layer is further divided into LLC and MAC sublayers.
However, the description of the MAC functions seems just like what the ARP does, which left me a bit confused.
...
13
votes
3
answers
5k
views
What options are available to use with the vscode:// url scheme?
In GitLab, when you click on the blue "Clone" button you will see several options:
Clone with SSH
Clone with HTTPS
Open in your IDE
The "Open in your IDE" section shows the option ...
- 2,156
0
votes
0
answers
502
views
What is meant by TCP connection in HTTP pipelining?
By definition, HTTP pipelining is a technique in which multiple HTTP requests are sent on a single TCP connection without waiting for the corresponding responses, according to Wikipedia, and some ...
- 1