sockets

Java deadlock problem....

I am using java sockets for communication. On the client side I have some processing and at this point I send an object to the cient. The code is as follows: while (true) { try { Socket server = new Socket("localhost", 3000); OutputStream os = server.getOutputStream(); InputStream is = server.getInputStream(); CommMes...

TCP socket communication

hello, I am creating a Chat in java. I have a method (onMouseRelease) inside an object that creates a tcp server and waits for a socket like this: ServerSocket server = new ServerSocket(port); Socket channel = server.accept(); Now I want to make a thread that will loop and read data from the socket, so that once the user on the oth...

Errors when connecting to HTTPS using HTTP::Net routines (Ruby on Rails)

Hi all, the code below explains the problem in detail #this returns error Net::HTTPBadResponse url = URI.parse('https://sitename.com') response = Net::HTTP.start(url.host, url.port) {|http| http.get('/remote/register_device') } #this works url = URI.parse('http://sitename.com') response = Net::HTT...

Talking with Selenium RC directly

I am curious if it's possible to let the Selenium RC server directly issue it's command over a socket connection to the target application without the JavaScript layer in between. If so, what's the best approach to do this? I can't make a client driver because that's the other way around. Anyone having any suggestions? I would love to ...

Java Socket Returns True

I hope you can help. Im fairly new to progamming and Im playing around with java Sockets. The problem is the code below. for some reason commSocket = new Socket(hostName, portNumber); is returning true even when it has not connected with the server (server not implemented yet!). Any ideas regarding this situation? For hostName Im passi...

Implement a vpn

I want to build an application client(client.exe) - server to do the following: when the clients run it they are thrown in a VPN and they can communicate each other within 1 applicataion. For example : clients run client.exe and they can see each other in LAN ONLY in Starcraft. From what i have read the right type of vpn for this situati...

Client connections with epoll

Hi, I'm programming an application(client/server) in C++ for linux using epoll y pthreads but I don't know how to handle the connect() calls for attach a new connection in the descriptor list if a loop with epoll_wait() is running(Edge-triggered), How to can I do it?... I could to use a dummy file descriptor to trigger an event and scap...

Java Socket Disconnect Reporting vs. C# Disconnection

in C# when a sockets connection is terminated the other node is informed of this before terminating the link thus the remaning node can update the connection status. in Java when i terminate a communication link the other node keeps reporting the connection as valid. do i need to implement a read cycle (makes sense) that reports the co...

How do i make a multi-threaded server in perl?

I have looked online at making a multi-threaded server in perl, but i cannot find any good ones that clearly explain how to create one. I have created a server and client in perl but i do not seem to be able to make it multi-threaded. Can someone help me? ...

How to get a list of IPs for a remote computer in Ruby

I have a app that needs to connect over a socket to a remote computer that now has multiple IP addresses. Is there a way to turn the remote Hostname or IP a list of all the IPs that the system has? Possibly (Hostname | Ip) => (RemoteMAC) => IPs? These will be windows server 2003/2008 machines. ...

buffer size for socket connection in c++

I'm trying to build a basic POP3 mail client in C/++, but I've run into a bit of an issue. Since you have to define the buffer size when building the program, but a message can be arbitrarily large, how do you, say, get the mail server to send it to you in parts? And if this isn't the correct means of solving the problem, what is? And w...

One write-thread, one read-thread on the same socket?

Hello, i am running eCos with the FreeBSD TCP/IP-stack. Is it safe to have two threads running one to read from a socket and one to write to the same socket? Well i guess since its the FreeBSD stack the operating system does not matter. Best regards, Friedrich ...

A problem in socket programming in perl

I write this code : #!/usr/local/bin/perl use strict; use LWP::UserAgent; my $ua = new LWP::UserAgent(agent => 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.5) Gecko/20060719 Firefox/1.5.0.5'); $ua->proxy([qw(http https)] => 'http://203.185.28.228:1080' #that is just socks:port); my $response = $ua->get("http://www.g...

sendto on Tru64 is returning ENOBUF

Hi, I am currently running an old system on Tru64 which involves lots of UDP sockets using the sendto() function. The sockets are used in our code to send messages to/from various processes and then eventually on to a thick client app that is connected remotely. Occasionally the socket to the thick client gets stuck, this can cause so...

python socket problem

I write this python code: import socks import socket socks.setdefaultproxy(socks.PROXY_TYPE_SOCKS5, "64.83.219.7", 58279) socket.socket = socks.socksocket socket.setdefaulttimeout(19) import urllib2 print urllib2.urlopen('http://www.google.com').read() but when I execute it, I get this error: urllib2.URLError: <urlopen error timed ou...

How to handle server-client requests

Currently I'm working on a Server-Client system which will be the backbone of my application. I have to find the best way to send requests and handle them on the server-side. The server-side should be able to handle requests like this one: getPortfolio -i 2 -d all In an old project I decided to send such a request as string and t...

What is this Perl code using LWP::UserAgent doing?

i have this code : use strict; use LWP::UserAgent; use warnings; my $ua = new LWP::UserAgent(agent => 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.5) Gecko/20060719 Firefox/1.5.0.5'); $ua->proxy([qw(http https)] => 'http://59.39.92.148:1080'); my $response = $ua->get("http://www.google.com"); print $response->code,' '...

What is a good buffer size for socket programming?

We are using .Net and sockets. The server is using the Socket.Sender(bytes[]) method so it just sends the entire payload. On the other side we are clients consuming the data. Socket.Receive(buffer[]). In all the examples from Microsoft (and others) they seem to stick with a buffer size of 8192. We have used this size but every now and th...

send socket c ctrl+c behavior

I'm witting an application based on a server and various client but I'm having a problem with the send command. Whenever I do ctrl+c on the client side the send operation kills the thread which is in and the process running (in order to have multiple clients I set a thread to which one). If the client ends (doing the close socket) prope...

sending a packet to multiple client at a time from udp socket

Hi! all, I was trying to write a udp server who send an instance of a file to multiple clients.Now suppose any how I manage to know the address of those client statically(for the sake of simplicity) and now I want to send this packet to these addresses.So how exactly I need to fill the sockaddr structure to contain the address of these c...