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Search found 18521 results on 741 pages for 'tcp window scaling'.

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• Linux: is here a read or recv from socket with timeout?

  - by osgx

  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

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• Taking screenshot of a specific window - C++ / Qt

  - by Switch

  In Qt, how do I take a screenshot of a specific window (i.e. suppose I had Notepad up and I wanted to take a screenshot of the window titled "Untitled - Notepad")? In their screenshot example code, they show how to take a screenshot of the entire desktop: originalPixmap = QPixmap::grabWindow(QApplication::desktop()->winId()); How would I get the winId() for a specific window (assuming I knew the window's title) in Qt? Thanks

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• How is this site opening a new window

  - by user217428

  Normally we can specify a target in the link or use javascript window.open to open a new window. But when I access this site www.wenxuecity.com (It is a chinese site) I could't find out how it opens each news in a new window. no target in the link. debug javascript doesn't show any call to window.open Could someone tell me how it is implemented? Thanks

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• background worker window controls not rendered

  - by senthil

  Is there any way to load window inside the background worker thread without using showdialog()? the background worker only terminate only after getting some input from the window. Here the issue is window shown but the button and other controls are not rendered even we don't have control over any of the window.

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• Make qwidget in new window in PyQt4

  - by matt

  I'm trying to make a class that extends qwidget, that pops up a new window, I must be missing something fundamental, class NewQuery(QtGui.QWidget): def __init__(self, parent): QtGui.QMainWindow.__init__(self,parent) self.setWindowTitle('Add New Query') grid = QtGui.QGridLayout() label = QtGui.QLabel('blah') grid.addWidget(label,0,0) self.setLayout(grid) self.resize(300,200) when a new instance of this is made in main window's class, and show() called, the content is overlaid on the main window, how can I make it display in a new window?

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• Scheduled Task to show console window when logged on but still run when not logged on

  - by HeartWare

  Is it possible (and if so, how) to set up a task (console application) in Server 2008 so that it'll run both when a user is logged in and when no user is logged in, AND - if the user is logged in (either local or via RDP) - have the console appear on the screen while the program is running? Ie. the program should run under the defined user context and it writes status messages to stdout, which goes to a standard console window. This console window is either shown (if the defined user is currently logged in locally or via RDP), or not shown (but the application is still run). I have access to the source of the console application, so if it needs some additional code (like specifically opening up a new console window or what have you), then that's not a problem. At the moment, I can set up the task as "Run only when user is logged on" which will run the application when the user is logged on (local or RDP) and I can then see the status messages, or I can set it up as "Run whether user is logged or not" and no status output is visible - not even if the user is logged on.

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• SQLCMD not recogized despite install of SQL Server Native Client for SQL2008

  - by John Galt

  This little question is part of a much larger issue I am trying to resolve: Does SQLCMD require a separate install or is it included with the Microsoft SQL Server 2008 Native Client (which I just installed on my webserver). Maybe this is just an incorrect path issue. Here is what I tried: C:\>sqlcmd -S tcp:devmojito\mssqlserver2008,1433 'sqlcmd' is not recognized as an internal or external command, operable program or batch file. C:\> This same syntax works when executed from the c drive on my SQL Server machine.

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• Recover OffScreen Window in Windows 8

  - by Jason McD

  Someone asked a very similar question in regards to window recovery for windows xp: Similar Recovery I'm using windows 8 (or 8.1 now). I run Dual Monitors. On Monitor 2 I sometimes have the input switched to something else other than the windows display (Mac or PS3). If there was a program that was displaying on Window #2 that does not have 'move' where I could potentially alt-space-m arrow keys. Is there another way to get that program to display on Window #1? I tried right click on the program and doesn't seem to be anything there. I tried Windows Key and Arrows. I Tried right click toolbar and cascade. I'm hoping this is a DUP or Softball question because this annoys the crap out of me. Thanks!!

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• How to get more NFS packet details from Wireshark?

  - by Joe Swanson

  How can I get Wireshark to give me details about NFS packets at this level of granularity? (as exemplified here here) Specifically, I am interesting in looking at the the "Stable" option toward the bottom. When I analyze captured packets (whether by capturing directly via Wireshark, importing from a tshark dump, or importing from a tcpdump dump), I do not see a "Network File System" section in the packet details. I only get general TCP information. It recognizes that a packet is destined for a NFS port, but I am not able to see these details. Any ideas?

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• Making TMUX use Alt+Num to select window

  - by Oxinabox

  I have been messing with TMUX, and I am liking the configuration abilities. The window list at the bottom makes me think that the same shortcut for changing windows in Irssi, should work in TMUX, but it doesn't. So at the moment, I have to press C-b then a number to get that window open. I am happy having C-b for my normal prefix, (eg for C-b ? for help, C-b : command entry) But it would be cool if I could use both C-b+Numkey and Alt+NumKey for changing tabs. It would be even cooler if it could detect if a window is showing Irssi, and then ignore the Alt+NumKey, so that I can still change between Irssi windows.

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• Command window missing default 8x12 font

  - by Robert Koritnik

  Installation: Windows Server 2008 R2 Remote Desktop Service role When I logon locally my command window (cmd.exe) displays with default font that is 8x12. But when I logon remotely and open command window, it opens with the smallest possible font selection. Opening window properties and setting font size, the default 8x12 font is missing from the list. What should I do to get this font back in the list? Following screenshots show settings when logged on locally and remotely. Local machine is not Aero capable, but remotely I can have Aero environment. I've also tried setting it to basic, but there was no change. Local logon Remote logon

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• Mac Screenshot of a Specific Window without Using the Mouse/Click

  - by huyqt

  Hello, I've been researching for a day or two but can't find a method to take a screenshot of a specific window (possibly the only window) open at a specific time using an Apple script. Currently I have the script execute screencapture -T1 ~/Desktop/screenshot.png But what I want is really screencapture -wx -T1 ~/Desktop/screenshot.png But when I use -wx, it waits for a mouse click on the window. Are there any utilities, built in or not, that will allow me to do this? Thank you so much! (I'm sorry if this belongs on Stack Overflow, can someone move it if it does. It kind of overlaps both super user and stack overflow.) Edit: The windows alternative that I'm looking for on a Mac is the keyboard shortcut: Alt + PrntScrn

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• Stop taskeng.exe window from popping up

  - by BlaM

  I have several processes scheduled in my Windows 7 environment, mainly for backups, that are supposed to run in the background. However instead of just doing it's work quietly in the background, the task scheduler pops up a black (console like) "taskeng.exe" window. The window goes in front of all other windows. Luckily it doesn't steal my keyboard focus, but it blocks the view on everything. Is there a way to avoid this window - or at least have it appear in the background without stealing my VISUAL focus?

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• Server not sending a SYN/ACK packet in response to a SYN packet

  - by jeff

  Using iptraf, tcpdump and wireshark I can see a SYN packet coming in but only the ACK FLAG is set in reply packet. I'm running Debian 5 with kernel 2.6.36 I've turned off window_scaling and tcp_timestamps, tcp_tw_recycle and tcp_tw_reuse: cat /etc/sysctl.conf net.ipv4.tcp_tw_recycle = 0 net.ipv4.tcp_tw_reuse = 0 net.ipv4.tcp_window_scaling = 0 net.ipv4.tcp_timestamps = 0 I've attached an image of the wireshark output. http://imgur.com/pECG0.png Output to netstat netstat -natu | grep '72.23.130.104' tcp 0 0 97.107.134.212:18000 72.23.130.104:42905 SYN_RECV I've been doing everything possible to find a solution and have yet to figure out the problem, so any help/suggestions are much appreciated. UPDATE 1: I've set tcp_syncookies = 0 and noticed I am now replying with 1 SYN+ACK for every 50 SYN requests. The host trying to connect is sending a SYN request about once every second. PCAP FILE

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• iTunes command+tab does not bring main window the foreground after command+h

  - by ecoffey

  Related to : Cmd-Tab does not bring iTunes to foreground There people claim that command+h will continue to work, but the behavior I'm seeing is: Launch a full screen Terminal instance (or anything else really) Launch a fresh iTunes command+h to hide it command+tab back to iTunes, this works and the main app window is given focus command+tab to Terminal command+tab to iTunes What I expect to happen: the main iTunes window is brought to the foreground and given focus. What does happen: The application menu bar shows iTunes, but an additional command+` is needed to bring the main app to foreground. I thought it might have been related to a Chrome interaction, since I'm usually commmand+tabbing between my browser and everything else, but that does not seem to be the case. I do have two "plugins" running: last.fm scrobbler Alfred app mini itunes player interface Not sure if either of those create some phantom window or something that is mixing something up. Versions of stuff: OS X: 10.6.5 iTunes: 10.1.1 (4) last.fm: can't find it, but it's recent Alfred: 0.8 (89) So after that big long rant, anyone else seeing this behavior?

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• Is there a network "tee"-alike with one leg returning to /dev/null ?

  - by Steff Davies

  I've just built a new PostgreSQL server for my employers, which is happily replicating using WALs. I'm now left with the problem of verifying its performance. One nice way which came up in conversation is to break replication with the slave caught up and then direct all production traffic to both servers, discarding the responses from the new server and returning those from the current one to the clients. Once we're sure performance is OK, we re-sync the slave and can fail over with confidence. Bliss. This would require a TCP proxy capable of opening two outgoing connections for each incoming one, and discarding the data returned from one of them, which is a tricky thing to google for, it seems. Do the assembled brains know of such a thing, before I dive into libevent and write one?

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• Forwarding ports with ssh on Linux

  - by Patrick Klingemann

  I have a database server, let's call it: dbserver I have a web server with access to my dbserver, let's call it: webserver I have a development machine that I'd like to use to access a database on dbserver, let's call it: dev dbserver has a firewall rule set to allow TCP requests from webserver to dbserver:1433 I'd like to set up a tunnel from dev:1433 to dbserver:1433, so all requests to 1433 on dev are passed along to dbserver:1433 My sshd_config on webserver has the following rules set: AllowTcpForwarding yes GatewayPorts yes This is what I've tried: ssh -v -L localhost:1433:dbserver:1433 webserver In another terminal: telnet localhost 1433 Results in: Trying ::1... Connected to localhost. Escape character is '^]'. Connection closed by foreign host. Any idea what I'm doing wrong here? Thanks in advance!

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• Easily tell if focused on VirtualBox window?

  - by Benjamin Oakes

  Is there a way to make it very obvious that my VirtualBox window isn't in focus? The problem I'm having is switching between workspaces on Ubuntu or OS X and then trying to type in my Windows virtual machine, only to find that it's not in focus. The Windows window looks like it's in focus (based on the title bar), but I'm actually typing in Firefox on the host machine, for example. It's even worse because the Windows text insertion cursor is blinking to show focus. Ideally, I'd like the VM's display to get unsaturated (e.g. a "partial" grayscale) when not in focus, just to prevent this keyboard-focus problem. Other options would be fine too, as long as I don't have to second guess where my focus is. I'm not using the seamless mode -- the display is all within a window.

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• tcpview cannot kill connection/process

  - by Stig

  I have a program that sometime misses to close a tcp connection. After the program has ended I can see that the port is taken. TCPViewer shows "non-existent" in the "Process" column. If i try to "End process" or "Close connection" nothing happens. If i reboot the server the port is released. But how can I tell Windows to release this port without a reboot? SOLUTION: It was dw20.exe (Microsoft Error Reporting) that was holding it back.

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• Sometimes tabs in notepad++ won't make a new window when dragged out

  - by darenw

  Long-time Linux user on a Windows 7 machine, using Notepad++ to edit multiple text files. Sometimes I can drag a tab out of the notepad++ window onto the desktop to get a new notepad++ window. This is a very nice feature. But sometimes when I try to drag a tab out, nothing happens. I don't see what is different about these tabs or the files they contain. It is repeatable; the same tab still won't make a new window. I'm not familiar enough with Windows and its strange ways to begin to guess what is going on, unless it's a bug. How can I make all tabs draggable-to-new-windowable, no exceptions?

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• Should I limit end-user gigabit ports to avoid saturating uplink/trunk connections?

  - by Joel Coel

  We have a campus with 16 buildings and older 850nm 1Gbps fiber links between the buildings, that all come to a core switch for our servers that also uses 1Gbps ports. We're finally starting to replace our aging 10/100 end-user switches, and much of what we're looking at are 1 Gbps units. My question is, since the trunk/uplink lines are still 1Gbps, if I were to install 1 Gbps switches for end users, should I limit the ports to 100Mbps until I can also upgrade the trunks to avoid allowing a bad-behaving host to saturate a trunk line (since we're a college, we have plenty of mis-behaving hosts) and thereby create a DoS situation for a building, or will TCP congestion control typically take care of that for me? What if we have a lot of UDP traffic (games, video chats, even a small amount of bittorrent)?

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• How to extend a window on 4 virtual desktops on Windows 7

  - by Patrice

  This site is very cool, and i often get many answers in it :) But today, I've a question for you. My Problem is: - I want to use a virtual desktop or resolution expander for windows 7 - I want to multiply per 2 a window resolution (i.e. seeing only 25% of one window on a screen) I tried simple tricks that didn't work for me, and installed a virtual desktop (Dexspot, a great one), but I can't manage to strech a window (Google chrome) over the 4 desktops simultaneously. Do you understand my problem, and have an answer to it? This would be great help ;-) See ya! Patrice

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• Clicking on Dock icon does not bring window on top (OS X Lion)

  - by Andrey Fedoseev

  I am using OS X Lion and I have a very annoying problem with windows not showing up when I click on Dock icons. It happens when I have some windows opened in one space but I am viewing another space at the moment. For example, I have Mail and Skype on space #2 but I am on space #1. Note that all windows are not minimized. I want to quickly switch to Mail. So I click on Mail icon in Dock, it switches the space to #2, menubar shows that active window is Mail but Mail window is actually below Skype window. The strangest thing is that sometimes it works as expected showing the Mail on top. I can't see any logic here, it's absolutely unpredictable, thus annoying. Does anyone experienced such problems? I wonder if it's a bug or correct behaviour. Is there any way to fix that?

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• Find and raise a window in KDE4 with shortcut

  - by Andre_112

  Hi all! I was wondering about a possibility to find and raise some window in KDE4 with shortcut. Currently in KDE 4.4 there is a possibility to switch to window from krunner (Alt-F2). Say, I have an open konsole widow somewhere and to switch to it, I can Alt-F2, write konsole and choose konsole window I need from the list. This is great, but too much typing. I would like to have a keyboard shortcut to do the same. Maybe some DBUS magic can do that? Any ideas? Thaks! Andre

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• Changing size of window when testing Adobe AIR mobile applications

  - by Peter

  Im making a mobile phone Android application in Flash CS 5.5. I set the width/height of the stage to 480/800 px. When I hit CTRL+ENTER to test run the application I get a window that is 480/800 px. It cannot be resized. I want to change the size of that window WITHOUT changing the stage width/height. For example if I run the APK on a mobile phone with a 1000x1000 display the flash will scale automatically to fit the 480/800 stage to the 1000x1000 screen. So it should be possible to change the window size to 1000x1000 without having to change the stage width/height. But how?

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