tcp streams problem c#
When i try to connnect to a local IP everything goes wonderfully but as soon as i use a normal ip, like to connect to a friend of mine outside the lan it just doesn't work ...
tcp
Detecting TCP dropout over an unreliable network
I am doing some experimentation over an unreliable radio network (home brewed) using very rudimentary java socket programming to transfer messages back and forth between the end nodes. The setup is as follows: Node A --- Relay Node --- Node B One problem I am constantly running into is that somehow the connection drops out and neither...
WCF how detect client existency
Hi all, As writen in my title, background: I have 2 different type of applications (WPF-silverlight) which can talk each other - Doctor application and Patient application - but it doesn't mean only 2 apps will run, for instance: i can run 3 doctor app and 7 patient app. and all of those apps is communicate using wcf via tcp connection...
Is there a way/tool to list TCP connections flaged as "thin" under Linux ?
Is there a way/tool to list TCP connections flaged as "thin" under Linux ? ...
TCP Message Structure with XML
Hello Everybody, I'm sending messages over TCP/IP and on the other side I parse TCP message.For example this is one of the sent messages. $DKMSG(requestType=REQUEST_LOGIN&requestId=123&username=metdos&password=123)$EDKMSG Clarification: $DKMSG( //Start )$EDKMSG //End requestType //Parameter REQUEST_LOGIN //Parameter Val...
Does anyone know of a really good client/server tcp/udp terminal utility, for windows?
I would like a utility that would allow me to send/receive tcp and udp messages as a client or server, assemble packets, set responses, etc... Preferably on Windows. Please let me know if you've seen anything like this. THANKS! ...
non blocking tcp connect with epoll
My linux application is performing non-blocking TCP connect syscall and then use epoll_wait to detect three way handshake completion. Sometimes epoll_wait returns with both POLLOUT & POLLERR revents set for the same socket descriptor. I would like to understand what's going on at TCP level. I'm not able to reproduce it on demand. My gue...
Linux: is here a read or recv from socket with timeout?
Hello How can I try to read data from socket with timeout? I know, select, pselect, poll, has a timeout field, but using of them disables "tcp fast-path" in tcp reno stack. The only idea I have is to use recv(fd, ..., MSG_DONTWAIT) in a loop ...
how to send an array of bytes over a TCP connection (java programming)
Can somebody demonstrate how to send an array of bytes over a TCP connection from a sender program to a receiver program in Java. byte[] myByteArray (I'm new to Java programming, and can't seem to find an example of how to do this that shows both ends of the connection (sender and receiver.) If you know of an existing example, maybe y...
16 millisecond quantization when sending/receivingtcp packets
Hi, I have a C++ application running on windows xp 32 system sending and receiving short tcp/ip packets. Measuring (accurately) the arrival time I see a quantization of the arrival time to 16 millisecond time units. (Meaning all packets arriving are at (16 )xN milliseconds separated from each other) To avoid packet aggregation I trie...
How to establish a socket connection from iPhone to a Apache server and communicate via PHP?
Hi, I am working on an iPhone game which is depended on a LAMP server. I want to create a "event" based system where the apache server sends an event to the iphone. For this, I am thinking of using "CFStreamCreatePairWithSocketToHost" to connect to port 80 of the apache server. I am able to successfully connect to the server and open...
How to get a list of programs that have connected to the Apache socket?
I have a LAMP server running. External services connect to this server (services running on iPhone). I want, from a php script, to get a list of all the services that have connected to the Apache server... How do I do it? Should I use fsockopen? Any help would be greatly appreciated. ...
Uncatchable errors in node.js
So I'm trying to write a simple TCP socket server that broadcasts information to all connected clients. So when a user connects, they get added to the list of clients, and when the stream emits the close event, they get removed from the client list. This works well, except that sometimes I'm sending a message just as a user disconnects...
C socket programming: select() is returning 0 despite messages sent from server
Hey all, I'm using select() to recv() messages from server, using TCP/IP. When I send() messages from the server, it returns a reasonable number of bytes, saying it's sent successful. And it does get to the client successfully when I use while loop to just recv(). Everything is fine and dandy. while(1) recv() // obviously pseudocode...
Flex to Flex simple TCP connection
Hi all, I'm working on a large file transfer(P2P) in UDP air application. I want to connect client and server using TCP. Can anybody tell me how to connect both both in TCP. Thank you. ...
Boost.Test: Looking for a working non-Trivial Test Suite Example / Tutorial
The Boost.Test documentation and examples don't really seem to contain any non-trivial examples and so far the two tutorials I've found here and here while helpful are both fairly basic. I would like to have a master test suite for the entire project, while maintaining per module suites of unit tests and fixtures that can be run indepen...
What is the minimum number of socket port(s) required for a TCP server?
Hey SO Doing a some practice questions for exam tomorrow can't figure out this one What is the minimum number of socket port(s) required for a TCP server to connect a TCP client for communication? Surely its just two right? one for the server one for the client, but this seems to obvious. My mates thinks TCP uses two ports at the ser...
Injecting raw TCP packets with Python
Hello! What would be a suitable way to inject a raw TCP packet with Python? For example, I have the payload consisting of hexadecimal numbers and I want to send that sequence of hexadecimal numbers to a network daemon: so that if I choose to send 'abcdef', I see 'abcdef' on the wire too. But not '6162636566' as in the case of: new = soc...
C code in Linux to C code in Windows
I'm having a code written in C that works on Linux. I want this program to work in windows, Are there any differences that I have to make in the code ? It is a code for Server/Client communication using sockets taken from here : http://www.linuxhowtos.org/C_C++/socket.htm ...
Detect aborted connection during ASIO request
Is there an established way to determine whether the other end of a TCP connection is closed in the asio framework without sending any data? Using Boost.asio for a server process, if the client times out or otherwise disconnects before the server has responded to a request, the server doesn't find this out until it has finished the requ...