I am trying to make a perl program which allows a user to input the host and the port number of a foreign host to connect to using IO::Socket. It allows me to run the program and input a host and a port but it never connects and says "Could not connect to [host] at c:\users\USER\Documents\code\perl\sql.pl line 18, line 2." What am i doi...
Hi I have a client and server program, all the coding is done and compiles, the client has a GUI and the server is command line. The program uses sockets. But when I run the client to connect to the server it keeps coming with the error message: "Usage: TodoClient []", rather than connecting to the server and starting up. This is whe...
I had a crazy thought about writing my own SQL Server driver to make it work something like non-blocking http client, so it won't be thread thirsty and could handle lots of db queries within one thread. I tried to look over google for some guidelines about implementing SQL Server client protocol, but found none really, where do those gu...
Hi all, We have a java server that keeps a socket channel open with an Android client in order to provide push capabilities to our client application. However, after putting the Android in airplane mode, which I expected would sever the connection, the server can still write to the SocketChannel object associated with that Android clien...
We are working to reduce the latency and increase the performance of a process written in Java that consumes data (xml strings) from a socket via the readLine() method of the BufferedReader class. The data is delimited by the end of line separater (\n), and each line can be of a variable length (6KBits - 32KBits). Our code looks like: ...
My situation is this : I have a C# tcp socket through which I receive structured messages consisting of a 3 byte header and a variable size payload. The tcp data is routed through a network of tunnels and is occasionally susceptible to fragmentation. The solution to this is to perform a blocking read of 3 bytes for the header and a block...
Hi all, I'm trying to send an image using a TCP socket. The client connects to the server without any problems and start to receive the data. The problem is when I try to convert the stream to an image using FromStream() method, I get an OutOfMemory Exception. Can anyone help me out? Really important!! Here is the code; client snippet ...
Fairly simple question (I think): I have a list of domains, and I want to loop through them, hitting their email and web servers, and determining the type of server software running. Something like this: LOOP over domain list ... Socket connect with www.[domain-name] over Port 80 ... Get return handshake volley of server type >...
Hello I have a problem with "CFDataRef. I get the "data" field from a "kCFSocketDataCallBack. "data" should correspond to a string received on the socket. How do I convert, for example, in a NSString so I can put my text in a textbox?? Thank you very much static void AcceptDataCallback(CFSocketRef s, CFSocketCallBackType type, CFDat...
I'm using Java sockets for client - server application. I have a situation when sometimes client needs to send a byte array (using byteArrayOutputStream) and sometimes it should send a custom java object. How can I read the information from the input stream on the server side and determine what is in the stream so that I can properly pro...
My situation is explained in the code below. I need to send via a socket NSString drawn from a TextBox Thank you very much NSString *string = fieldTesto.txt; // I Find an istruction for insert s string in to the CFSocketSend UInt8 message[] = "Hello world"; CFDataRef data = CFDataCreate(NULL, message, sizeof(message)); CF...
Could someone please explain what an I/O Error 32 refers to in the context of a network socket? I have a multithreaded Socks5 server written using Poco SocketReactors and am getting this error when the server load reaches a certain point. The exception is thrown within my onReadable handlers at the same time across all threads which hav...
I've recently knocked up a server/client app for Windows & Android that allows one to send a file from Windows to an android phone over a socket connection. It works great for a single file but trying to send multiple files over in a single stream is causing me problems. I've also realised that aside from the binary data, I will need t...
I use connect(socketfd, (struct sockaddr*)&remoteAddr, sizeof(remoteAddr)) to connect my iPhone to a computer (over WIFI) and it works fine so far. However if the computer is out of reach, my iPhone tries to establish a connection for more than a min. Is there a posibility to set the time manually out to a new value, e.g. 15 sec? ...
What is the most updated book on programming TCP/IP sockets with Perl? ...
i writed 2 client and server program. client send file also server listen port and than get file.But i need My server App must listen on 51124 port permanently. if any file on my stream, show me a messagebox "there is a file on your stream" and than show me savefile dialog. But my server app in "Infinite loop". 1) listen 51124 port eve...
Using winsock, you can configure sockets or seperate I/O operations to "overlap". This means that calls to perform I/O are returned immediately, while the actual operations are completed asynchronously by separate worker threads. Winsock also provides "completion ports". From what I understand, a completion port acts as a multiplexer of...
I want to make a chat which will be programed in java. one computer will host the server and the other one will initiate the socket [tcp port]. now from what I read there should be a loop that will constantly read the socket which means it will make the code stuck. I have a button that is 'actionperformed' on mouse release, I want to kno...
Imagine you have a server which can handle only one client at a time. The server uses WSAAsyncSelect to be notified of new connections. In this case, what is the best way of handling FD_ACCEPT messages: A > Accept the connection attempt right away but queue the client until its turn? B > Do not accept the next connection attempt until ...
Hi, I'm dealing with a HTTP sockets project, I have to send 2 HTTP GET requests from my java code like this : Request 1 : call page X Page X is setting a cookie. Request 2 : call to page Y as you see to access the content of page Y i cookie must be present... how to accept a cookie from java code please ? Here's a sample sent requ...