w3hello.com logo
Home PHP C# C++ Android Java Javascript Python IOS SQL HTML videos Categories
SocketException (0x80004005): An existing connection was forcibly closed by the remote host
This will happen when, as the exception implies, the remote host (server) closes the connection unexpectedly. This can be due to a multitude of reasons, but typically is due to an unhandled exception on the server side. Investigate the server code and go from there.

Categories : C#

IOException: read failed, socket might closed - Bluetooth on Android 4.3
I have finally found a workaround. The magic is hidden under the hood of the BluetoothDevice class (see https://github.com/android/platform_frameworks_base/blob/android-4.3_r2/core/java/android/bluetooth/BluetoothDevice.java#L1037). Now, when I receive that exception, I instantiate a fallback BluetoothSocket, similar to the source code below. As you can see, invoking the hidden method createRfcommSocket via reflections. I have no clue why this method is hidden. The source code defines it as public though... Class<?> clazz = tmp.getRemoteDevice().getClass(); Class<?>[] paramTypes = new Class<?>[] {Integer.TYPE}; Method m = clazz.getMethod("createRfcommSocket", paramTypes); Object[] params = new Object[] {Integer.valueOf(1)}; fallbackSocket = (BluetoothSocket) m.invoke(

Categories : Android

Android - Bluetooth Printer not finished printing but throws IOException: Socket Closed
What happpend if you put a Thread.sleep(2000) right before the socket.close()? I work on bluetooth SPP and I had the same issue (Socket close before the end of data transfer). I think that the broadcast of socket.close() is faster than the transmission of the data, then all the data are not analyze by the BT printer when the close request is send

Categories : Android

UDP SocketException - Only one usage of each socket address is normally permitted
Managed to figure this out in the end. Apparently if you want to have more than one connection to a socket, you have to manually configure it, like so: Dim endPoint = New System.Net.IPEndPoint(0, _iReceivingPort) _ReceivingClient = New System.Net.Sockets.UdpClient() _ReceivingClient.ExclusiveAddressUse = False _ReceivingClient.Client.SetSocketOption(Net.Sockets.SocketOptionLevel.Socket, Net.Sockets.SocketOptionName.ReuseAddress, True) _ReceivingClient.Client.Bind(endPoint) Works now, so I'm happy.

Categories : Vb.Net

Socket closed before able to read from ObjectInputStream(BufferedInputStream(Socket.getInputStream))
You can't use a buffered input stream and another kind of stream on the same socket. The buffered stream will steal data from the other one. Make up your kind the ObjectInputStream will do everything you need. Just use that.

Categories : Java

Java tutorial sample code throws: java.net.SocketException: Connection reset - what does cause it?
Your code is working fine for JVM's that can connect to the internet. Based on the original question and discussion: http://chat.stackoverflow.com/rooms/31264/discussion-between-achingfingers-and-meewok it seems that either: An intermediate firewall is blocking the JVM from making the connection (or another similar network issue). An operating system firewall, or antivirus that is causing the problems as well. My suggestion is to try: Same app on different computer within same network (to see if it is PC specific). Same app on different network.

Categories : Java

My eclipse tomcat server is stopping and gives these exceptions "java.net.SocketException" and "java.net.BindException"
Look at the last stack in the logs and you find the root cause of your problem: Address already in use: JVM_Bind It means there is already a process running and listening on the port you try to use. Most of the time, this error is caused by a previous run of your own program that didn't terminate (properly), or is still running. Take a look in your IDE to see if you don't have some running instance alive (and kill it). You can also take look at running process under Windows task manager (or any other equivalent utility on other platforms) and try to identify the process using the port. You may also have a tomcat running as a window service: in this case, just change the port use by your program to avoid conflicts.

Categories : Java

Why am I receiving a java.net.SocketException: Connection reset error from web service through SOAP UI and Java client?
As I can see, all of your examples should work properly. I recomment you to use some packet tracing software, like wireshark or fiddler, and check for the request/response headers. Maybe there is some extra info (UserAgent, etc) that you need to set on the connection before requesting the OutputStream ================ UPDATE ====================== As you specified, server requires you to enable SSLv3. Use this before establishing connection System.setProperty("https.protocols", "SSLv3"); I did this in my test, and it seemed to connect since I could write the soap message to the OutputStream, but I got an 500 Error from the server, which is a good thing since that is a werbservice internal fault Now you need to find what is wrong in the soap message, or the message data ============

Categories : Java

Is socket closed from my end or the other end
It looks like your application is shutting down the HttpClient connection pool too soon. It is not happening in the code you showed in your Question. That code looks like "an innocent victim". Is this an issue with the HttpClient version I am using? Probably not. Or is something in my environment changing the behaviour? Erm ... could be. Especially if "my environment" is an obscure way of saying some other part of your program.

Categories : Java

Handling java.net.SocketException
It depends on whether the client or the server is the one throwing the exception. Either way, you should just be able to add a try-catch block around the code. try { //code } catch (SocketException e) { // Handle the error } If the server is throwing the error and you want the client to handle the situation, the client should be throwing an exception due to the loss of connection (this is what this exception looks like). Alternatively, if the server throws an error but doesn't crash, just have the server send some signal to the client that an error occurred. Either way, with a little more information, I could give you a better resposne.

Categories : Java

Nodejs: This socket is closed
Try this code Option1 function broadcast(message, sender) { try { clients.forEach(function (client) { if(client._handle){ // ensure there is still underlying handle client.write(message); // ERROR IS HERE } }); } catch (ee) { } } Option2 Attach error event listener on socket. Socket.on('error',function(){ console.log("%j", arguments); });

Categories : Node Js

java.net.SocketException: Cannot allocate memory (not Mac)
dunno if it helps, but check Memory error when trying to change Apache Tomcat port from 8080 to 80

Categories : Java

Android:: Socket communication query in which java server should respond back with some text in every button click from android client?
I think you want to look something like this. Android Client Connected with Socket Server

Categories : Android

TCP server socket is closed if i switched to another app
In android, the decision whether to keep your app running or not depends a lot on the existence of a Context whether it is an Activity, Service or BroadcastReceiver. According to android's documentation: An empty process is one hosting no activities or other application components (such as Service or BroadcastReceiver classes). These are killed very quickly by the system as memory becomes low. For this reason, any background operation you do outside of an activity must be executed in the context of an activity BroadcastReceiver or Service to ensure that the system knows it needs to keep your process around. So what do you want to do is starting a service once your activity is started and from that service spawn a thread that will manage the TCP server. that way you will be fine as l

Categories : Java

httpclient java.net.SocketException: Connection reset
Once java.net.SocketException: Connection reset comes out,it needs time to recover. The website needs time to recover. I want to know if there is any method to recover the connection immediately The connection has been reset. There is nothing to recover. You will get a new one next time. If you keep getting resets, the website is issuing them. It can't issue a reset twice on the same connection.

Categories : Apache

init error: java.net.SocketException: Too many open files
You have a loop in which you open a new socket on each iteration. You never seem to close any of the sockets. They may get closed when the out-of-scope objects are GC'ed, but you are creating these sockets at a very high rate and exhausting the available file handles. Close each socket when you are done with it.

Categories : Java

"java.net.SocketException: Broken pipe" when using Hibernate with Mysql
well... this is a SocketException. It probably has nothing to do with the properties that you mentioned. You should rather focus on your data source parameters. Maybe it's incorrect connection url or jndi name?

Categories : Mysql

Problems with connection between PC and Android device - SocketException
Based on the comments, there are two things you should pay attention. First, you are contacting a device in your local network from your local network using the public address. I'm not sure that all of the routers will be able to do this properly, but nevertheless you need to forward the 8867 port if you want public access. Try it, it may help. Search your router here and you will find an explanation how to do that: http://portforward.com/ The phone should certainly be available when accessing the phone from outside the network after forwarding. Of course, your phone should always have the same local address. Reserve it in the router settings or set it manually on the phone. For testing purposes, try to use the phones local IP address from your PC.

Categories : C#

How to stop Socket to send a lot of useless data when closed?
I think you should use a delimiter character, to tell the Server your Client it's about to die. Add that character of code in onPause method of your Android Activity/Fragment. Then in your Server, just get the String or byte and compare it against your Delimiter String/Character and stop the Server listening for the Connection.

Categories : Android

Is there a way to detect that TCP socket has been closed by the remote peer, without reading from it?
If you want to check if the socket is actually closed instead of data, you can add the MSG_PEEK flag on recv() to see if data arrived or if you get 0 or an error. /* handle readable on A */ if (B_is_not_connected) { char c; ssize_t x = recv(A_sock, &c, 1, MSG_PEEK); if (x > 0) { /* ...have data, leave it in socket buffer until B connects */ } else if (x == 0) { /* ...handle FIN from A */ } else { /* ...handle errors */ } } Even if A closes after sending some data, your proxy probably wants to forward that data to B first before forwarding the FIN to B, so there is no point in knowing that A has sent FIN on the connection sooner than after having read all the data it has sent. A TCP connection isn't considered closed until after bot

Categories : C

determine if client has closed connection to server using socket
Here is some code I believe can be used to detect exiting socket... Originator of this code was stated as Andrew Gillard no other licence information was available... <?php $host = '127.0.0.1'; $port = 7010; gc_enable(); set_time_limit(0); function socketError($errorFunction, $die=false) { $errMsg = socket_strerror(socket_last_error()); echo $errorFunction.' '.$errMsg." "; if ($die) die("Program Ended "); } //Attempt to create our socket. The "@" hides PHP's standard error reporting, if (!($server = @socket_create(AF_INET, SOCK_STREAM, SOL_TCP))) socketError('socket_create', true); //socket_set_option($server, SOL_SOCKET, SO_REUSEADDR, 1); if (!@socket_bind($server, $host, $port)) socketError('socket_bind', true); if (!@socket_listen($server)) socketError('socket_list

Categories : PHP

Socket Connection getting closed after serving client in perl
You can find working example of INET/TCP socket server in perlipc(1) man page. I prefer using IO::Socket standard as described here. If you don't want to use the IO::Socket module, you have working example here. Server sample code from this manual: #!/usr/bin/perl -w use IO::Socket; use Net::hostent; # for OOish version of gethostbyaddr $PORT = 9000; # pick something not in use $server = IO::Socket::INET->new( Proto => "tcp", LocalPort => $PORT, Listen => SOMAXCONN, Reuse => 1); die "can't setup server" unless $server; print "[Server $0 accepting clients] "; while ($client = $server->accept()) { $client->autoflush(1); print

Categories : Perl

Spring Data MongoDB - java.net.SocketException: Connection reset
is dbserver your real hostname? Is a firewall blocking it? can you get to mongodb from command line? from a GUI client? See: What's causing my java.net.SocketException: Connection reset?

Categories : Java

Getting `Can't assign requested address` java.net.SocketException using Ehcache multicast
This was caused by an IPv6 address being returned from java.net.NetworkInterface.getDefault(). I'm on a Macbook and was using wireless -- p2p0 (used for AirDrop) was returned as the default network interface but my p2p0 only has an IPv6 ether entry [found by running ipconfig]. Two solutions, both of which worked for me (I prefer the first because it works whether you are using a wired or wireless connection) Start the JVM with -Djava.net.preferIPv4Stack=true. This caused java.net.NetworkInterface.getDefault() to return my vboxnet0 network interface -- not sure what you'll get if you're not running a host-only VM. Turn off wireless and use a wired connection

Categories : Java

java.net.SocketException: recvfrom failed: ETIMEDOUT (Connection timed out)
See http://www.mail-archive.com/freebsd-hackers@freebsd.org/msg23588.html: "You can get this if the TCP connection times out, either through a keepalive timeout or the protocol hits the maximum number of transmit retries." It doesn't have anything to do with DNS.

Categories : Java

UDP Socket: An existing connection was forcibly closed by the remote host
In BeginReceiveFrom your remoteEP should indentify the socket that is listening, mostly the same endpoint that you have used for the Bind. And in your callback method ReceiveCallbackUDP you should call EndReceiveFrom, as this is the corresponding Method to BeginReceiveFrom: EndPoint tempRemoteEP = (EndPoint)client.remoteEndpoint; int bytesRead = UDPSocket.EndReceiveFrom(ar, ref tempRemoteEP); See the Example in http://msdn.microsoft.com/en-us/library/system.net.sockets.socket.beginreceivefrom.aspx, where tempRemoteEP passed to BeginReceiveFrom is the same Endpoint as sender passed to Bind.

Categories : C#

Run a python socket server and if closed remotely start it listening again
The way you usually program a threaded socket server is: call accept() in a loop spawn a new thread to handle the new connection A very minimal example would be somethig like this: import socket import threading import time server = socket.socket(socket.AF_INET, socket.SOCK_STREAM) server.bind(('0.0.0.0', 9999)) server.listen(1) def handle(conn): conn.send(b'hello') time.sleep(1) # do some "heavy" work conn.close() while True: print('listening...') conn, addr = server.accept() print('handling connection from %s' % (addr,)) threading.Thread(target=handle, args=(conn,)).start() You're spawning new threads in which you create your listening socket, then accept and handle your connection. And while socketIsOpen is True your programm will be using a lot of

Categories : Python

does poll system call know if remote socket closed or disconnected?
If the sockets breaks, poll() will return > 0, then you will have to check the return value of recv in order to know if the socket is disconnected (recv() will return 0 in this case). Also, what would poll return on 0 timeout. int rc = poll(fds, nfds, 0); poll() will return immediately, and the return value can be >= 0. You really should read the poll() manpage, there is all you need to know.

Categories : C

Android Java Socket - Connection timed out
I would recommend using GCM for the cell Notification and afterwards making a server pull. It certainly is much faster and you could use a simple REST server for serving data. You need to make your PC the server and your droid the client.

Categories : Java

Client prints Half Data Before Connection is Closed By Server on Socket
try flush data after sent. it needs if you use socket with fdopen FILE *fdsock = fdopen(sock, "a+"); ... fwrite(fdsock, 1, 1 "A"); fflush(fdsock); ... fclose(fdsock); and to finish socket, close with shutdown(sock, SD_SEND); UPDATE Take memset out of loop

Categories : C

how to detect that user has closed not refresh the browser window in Nodejs socket.io
This isn't really possible, because the server doesn't know the difference between a disconnect. All it knows is that the browser closed the connection, it doesn't know why. However, you could guess which one it was by watching to see if the browser reconnects in a short period of time: Give each client a unique ID that you store somewhere in your database, and the browser stores it in localStorage. Have the browser sends the ID when it connects, if it has one, and request a new id if it doesn't. On the server, set a short timeout after the client disconnects, maybe 3 seconds. If you see a new connection with the same ID during that timeout, then you can assume it was a refresh. If you don't see a new connection with the same ID, you can assume the browser window (or tab) was closed.

Categories : Node Js

Jesey Client on JBoss 7.1.1 throw java.net.SocketException: Protocol family unavailable for IPv6 address
Start JBoss in this way JBoss 7 : ./standalone.sh -Djava.net.preferIPv4Stack=false or JBoss 7 : ./standalone.sh -Djava.net.preferIPv6Stack=true By default IPv4 is enabled in Java, you need to tell explicitly to use Ipv6

Categories : Java

Android Socket doesn't connect to laptop server - but local Java program can
Oh boy this is silly and embarrassing. Basically I was using the wrong IP address (192.168....). In Windows, use ipconfig (Linux: ifconfig), and choose the IP address corresponding to Wireless LAN (wlan). I was using another IP address corresponding to a virtual machine or some crap. Hope this helps someone else in the future, I hate these kind of issues.

Categories : Java

Android/Java - Images are not show correctly when i send it to the browser using a server socket
At the end i found that the problem not depends from my code but from the browser used. I have done some test and i noticed that: - Mozilla Firefox doesn't show the image, but the strange characters - Safari show correctly the image - Chrome show correctly the image - Opera show only strange characters So i suggest to try various browsers if you find my same problem. Thanks

Categories : Java

A java Socket is a TCP socket. Do I send TCP header information to a website?
do I have to strip away the IP and TCP headers when sending the data through a Socket() in java? Or do I leave the TCP header intact? You don't have the TCP header to strip. You just send and receive data. I tried plain socket, but it was not connecting ... So then I tried using a blocking SocketChannel There's no difference for this purpose between Socket and SocketChannel. If you're using either of them you are only concerned with the data payload, not the IP or TCP headers. Also if don't mind answering another question for me. When I get the payload I try to search for "GET" in hex values (0x47,0x45,0x54) to find the HTTP header, but I never find one. Is this right? I check the IP address requested and its asking for google.com. One thing though is that the port is 443 wh

Categories : Android

Java Socket server not recieving data from client socket
Your client doesn't close the socket. Your server reads the socket until EOS, which will never arrive as your client doesn't close the socket. NB don't handle client I/O in the accepting thread. Start a separate thread.

Categories : Java

PHP socket sends data but Java socket is not receiving
String str = br.readLine(); expect a which is not sent by the PHP program. Add this : socket_write($socket, "Hello " ); // <<<=== ' ' added

Categories : Java

Why does server fail with "java.net.SocketException: invalid argument" upon server's startup?
It is likely to be either a problem with name resolution, or with leftover settings from 0.7. If you are migrating from 0.7, see the migration guide. If you're starting fresh, ensure that there is an accurate entry in /etc/hosts for your hostname. e.g. given a /etc/hostname file with yourhostname and an interface (/sbin/ifconfig) listening with an example IP of 10.181.11.14 /etc/hosts should correctly map that name to the listening interface: 10.181.11.14 yourhostname.yourdomain.com yourhostname someotheralias You can test it by telnetting to the kafka port and ensuring that there is no timeout: telnet yourhostname.yourdomain.com 9092 Trying 10.181.11.14... Connected to yourhostname.yourdomain.com. Escape character is '^]'.

Categories : Apache

Will select (or epoll) mark a socket as readable if there is data on the socket prior to adding the socket to the list of monitored file descriptor
will select now immediately let me know that the socket is readable? Yes. What, if in step 5, the peer does not send me any data but say, since a FIN. Will select still tell me that the socket is readable Yes. in summary, the question is if select(or any of its variants such as epoll) indicate that a socket is readable if there has been any activity on the socket prior to including the socket in the list of monitored file descriptors and assuming that the application has read no data from the socket Yes.

Categories : Sockets

Finalizing a Cursor that has not been deactivated or closed or database not closed error
When you are done with the cursor, you need to call Cursor.close(). Leaving it not closed leads to memory leaks. E.g.: Cursor cursor = null; try { cursor = getContentResolver().query(myUri, MY_PROJECTION, null, null, null); if (cursor != null && cursor.moveToFirst()) { // moar code } } finally { if (cursor != null) { cursor.close(); } }

Categories : Android



© Copyright 2017 w3hello.com Publishing Limited. All rights reserved.