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2
votes
1answer
181 views

Setting source IP with posix sockets

Is it possible for an application to request a socket (tcp) and have it set the source address without using raw sockets? (the addresses would be bound to the interfaces. [no spoofing]). This would be ...
0
votes
3answers
562 views

Reconstruct a file from a TCP stream

I have a client and a server and a third box which sees all packets from the server to the client (but not the other way around). Now when the client requests a file from the server (over HTTP), the ...
1
vote
2answers
468 views

Would a typical corporate firewall block a Java applet having the following behaviour

I'm thinking of developing a proxy-like program to forward ports on a remote PC to a local PC (for example SSH). Assume that both local and remote PCs are running behind typical firewalls (i.e. ...
1
vote
1answer
782 views

Serializing network messages

I am writing a network wrapper around boost::asio and was wondering what is a good and simple way to serialize my messages. I have a message factory which can take care of dispatching the data to the ...
0
votes
1answer
85 views

Why are there proxy processes between clients and logic processes in C/S application?

In real world networking software following c/s model, there are always proxy server processes between clients and server processes dealing with business logic, why we need proxy to isolate the logic ...
10
votes
3answers
205 views

How could I avoid a distributed deadlock during a mutual connection between two nodes?

Suppose we have two peer nodes: the first node can send a connection request to the second one, but also the second one can send a connection request to the first one. How to avoid a double connection ...
1
vote
1answer
140 views

How related is coding/information theory to computer networking?

I am taking a networking class(data communication) this coming semester. In many courses in my computer engineering degree, the books lack mathematical content. I am not a math wizard, but I think ...
5
votes
1answer
277 views

QoS implementation algorithm

I'm working on an application, that does IP routing and QoS. Today we have the QoS implemented, with 3 priorities (low, normal and high) and for each level we create a Queue and as soon as the ...
13
votes
2answers
539 views

What is Curiosity's packet structure?

For NASA's Interplanetary Network, what does a packet look like? It's obviously a form of redundant protocol, stored at the receiver and with built back up. Is there any documentation on the packet ...
1
vote
4answers
348 views

Is restricting sessions to an absolute IP likely to have a wide impact on mobile networks?

Our website currently restricts a cookie-based session to the IP address that was originally sent the Set-Cookie HTTP header. In the past a user's IP would rarely change, so this didn't present much ...
2
votes
2answers
933 views

Is it wrong to push messages from server to client in a client-server application?

I practically never see any web application where server pushes messages to the client. While pushing messages from server to client is hugely used in multiplayer games, why this model is so underused ...
0
votes
1answer
120 views

Multiplayer Game Listen Servers: Ensuring Integrity

I'm making a simple multiplayer game of Tic Tac Toe in Python using Bridge (its an RPC service built over a message queue - RabbitMQ) and I'd like to structure it so that the client and the server are ...
10
votes
1answer
3k views

Why did Golang discontinue the “netchan” package?

The Golang "netchan" package seems to have been discontinued. That makes me think that the concept of "networked channels" were not a good practice after all. (Why wouldn't them just "let it be" ...
-1
votes
1answer
184 views

Any one ever heard of the term collapsed Backbone? [closed]

Any one ever heard of the term collapsed Backbone? Could it be a virtual network that could be referred also to this term.
2
votes
2answers
332 views

Communication between state machines with hidden transitions

The question emerged for me in embedded programming but I think it can be applied to quite a number of general networking situations e.g. when a communication partner fails. Assume we have an ...
0
votes
2answers
556 views

tcp retransmission queue

I'm trying to understand how tcp retransmission queue works so I can implement it in my application that uses TCAP over SCTP. What I understood from the TCP queue is that every message is saved in ...
1
vote
4answers
658 views

Data structure for file search

I've asked this question before and I got a few answers/idea, but I'm not sure how to implement them. I'm building a telecom messaging solution. Currently, I'm using a database to save my ...
1
vote
1answer
306 views

Sharing SCTP connection with multiple threads

I have an application that needs to run in SCTP environment, I have a question in sharing the connection among multiple threads for packet receiving only, I've tried with the sctp_sendmsg and it ...
0
votes
1answer
271 views

Which topics do I need to research to enable me to complete my self-assigned “Learning Project”?

I want to continue learning C#. I've read parts of a few books recommended on here and the language is feeling more familiar by the day. I'd like to tackle a mid-sized personal project to take my ...
1
vote
3answers
222 views

How to rewrite a TCP MMOG server designed to run in a single machine, in a distributed way? [closed]

I have a MMOG server running on C++, using winsockets. My server won't support more than 200 players. I had the idea of redesigning it so it will use multiple servers instead of one, so, maybe, for ...
5
votes
1answer
136 views

Geo IP data on stackoverflow API?

Have just looked at stackgeography and at soapi. I cannot see where the geo data comes from as it's not on the soapi. Can anybody shed some light on that? More info on the stackgeography
0
votes
2answers
282 views

How to connect iPad app to an app I have running in Windows

I recently picked up a macbook and want to start doing some apps for my ipad. I have a chat client written in c# that interfaces a game I play. What I would like to do is write an app for the ipad ...
5
votes
4answers
348 views

Can I advance my career in the USA if I lack local networking? [closed]

I'm a web developer with 10 years of experience in the Microsoft stack. I was brought to the US by my company, but my contract has ended. I want to continue pursuing a career in the US, but it seems ...
2
votes
2answers
889 views

Is TCP/IP an OSI Replacement or both are inter-dependent and meant to work together

I'm confused in differentiating the OSI Model and TCP/IP suite. As per my knowledge. OSI is a structure on top of which Networks are built and TCP/IP is the suite of protocols that operate on these 7 ...
0
votes
1answer
3k views

C programming in Windows 7 [closed]

Which is the best book and what are the best tools for C programming in Windows 7? Would using C in any way hinder me when it comes to using the Windows API as opposed to using C++ or C#? I would ...
2
votes
2answers
972 views

Is it possible to integrate UDP file transfer into a .NET web application?

Background I have recently been tasked with designing a rebuild of an existing .NET web application that currently uses a third-party company to handle large file transfers (as big as 50Gb). ...
0
votes
1answer
469 views

What is the development workflow for an Android SIP application? [closed]

I want to build an Android SIP application, and I'm looking at csipsimple's source for inspiration. I am using: Linux, Eclipse 3.7, Android sdk & ndk, swig. What are the development phases or ...
7
votes
4answers
457 views

Is there really such a thing as “push”?

Once you escape the realm of electrical signals and are dealing with software, is there really such a thing as a "push" architecture where there isn't periodic polling? I can't think of any design ...
2
votes
1answer
228 views

Book on network cryptographic protocols [closed]

I am looking for a book that describes in fair detail the most common network cryptographic protocols such as SSL, TLS, SSH, HTTPS, etc. I already have some books that cover the underlying ...
4
votes
1answer
686 views

SS7(M3UA, SCCP, TCAP, MAP) Stack

I'm building an open source SMSC from scratch; it's almost finished, The SRI and the forwardSM operations are working, but I still have few things to do for the receiving part. I've built the SS7 ...
4
votes
1answer
212 views

audio and video data in RTP

Suppose a user wants to transmit both audio and video to another user, whose formats are AMR for audio and H.264 for video. Does the user have to transmit audio and video packets always separately? ...
4
votes
2answers
216 views

How to protect a peer-to-peer network from inappropriate content?

I’m developing a simple peer-to-peer app in .Net which should enable users to share specific content (text and picture files). As I've learned with my last question, inappropriate content can ...
5
votes
3answers
160 views

VPN or TLSv1 for securing a programs protocol from field device to mainframe

I am working on a product that requires devices to exists anywhere in the world hooked up to the internet though cell modems or on WLAN lines which communicates to a server(s) that exists elsewhere in ...
6
votes
2answers
692 views

How do I optimize a web application for high-latency users?

Basically, I have an application that does searches and requests results from a backend via long polling. It connects to the backend which collects results for 500 ms then sends them back to the ...
8
votes
3answers
3k views

Difference between networking programming and socket programming

Are there any major differences when we talk about "socket programming" compared to "network programming"? Are there some topics that cover "network programming" but not "socket programming"?
4
votes
4answers
631 views

How a port “listens”, pull or push?

When you write a code to listen from a port, like 80 for example, what happens under the hood? Is the method the OS uses to listen is pull, or push? In other words, does the OS checks that port every ...
2
votes
2answers
6k views

Creating a P2P application using Java

I am preparing to start a 3rd year project using Java. The object is to create a P2P application where users can write text, draw and edit at the same time. The connection between them must be P2P. ...
1
vote
2answers
452 views

How are multiplayer games designed? [closed]

If each player has their own avatar, that can move, jump, and do actions to entities in the world (let's say, boxes). How is it handled? Is clients sending commands to the server and getting the ...
5
votes
2answers
319 views

solve TOR edge node problem by using .onion proxy?

I would like to improve the TOR network, where the exit nodes are a vulnerability to concealing traffic. From my understanding, traffic to .onion sites are not decrypted by exit nodes, so therefore - ...
11
votes
2answers
571 views

How does an online game continue after the host leaves?

Note: This is a question about networking, not gaming. I'm using StarCraft merely as an example. The game StarCraft (not StarCraft 2) supports online play. One person hosts, and other people join. ...
3
votes
4answers
597 views

Is Linux a neccessity for learning network?

I'm a web developer interested in learning network. I work on Windows platform. Many of my friends and colleagures believe that to learn netwrok, I should become familiar with Linux platform. Should ...
4
votes
3answers
257 views

Group messaging of computers over internet

I want to be able to send messages between computers on the internet network but with minimal functionality requirement are- 1)computers can join/leave the group (I expect the group size to be a ...
21
votes
4answers
526 views

How did programmers use networking to share expensive computer resources in the 60's and 70's?

I'm young and wasn't alive during the 60's and 70's to experience networking and programming as it once was. I have been watching some talks by Van Jacobson on Content Centric Networking, and in ...
1
vote
3answers
1k views

UDP segments that are lost

i know that UDP does not care about segment (packet) order and their arrival on the destination. then how on earth are we able to stream videos? if a segment is lost (doesn't reach the destination), ...
3
votes
5answers
552 views

How to network effectively to get a job [closed]

I have been working for 5 years at the same company now. I want to go and find a new job. Finding jobs or getting interview calls has been difficult, there are have far and few. And to compound the ...
11
votes
8answers
2k views

i want to make some programmer friends but dont know where to really look [closed]

I know this is one good place but what I'm really looking for is contacts, maybe seeing them online, have intelligent conversations etc. Where I live there isn't that many programmers around me ...
2
votes
2answers
196 views

Network application framework/API/etc

With all the web2.0 hype and webapps being all the rage, the only advantage from a corporate POV that I can think of webapps having is that it is easier to service your user base: upgrades become ...
15
votes
4answers
376 views

How to network with other developers?

What suggestions would you give to find networking opportunities or to network at user groups and other developer venues? For instance, if you went to a code camp, would you try to network with other ...
4
votes
1answer
173 views

Approaches that cater for poor connectivity

First off some background info My company has a software as a service model where people log onto our servers and do work. In order to support that application we have a utility application that ...
0
votes
2answers
379 views

Serverless protocol [closed]

Ok programmers, here's one for you. I'm writing an open source IM client/protocol as a learning exercise and to scratch my itch about some problems with current protocols. However, I'm poor. I do ...