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TCP: can two different sockets share a port?

...lished connection is uniquely identified by the combination of client-side and server-side IP/Port pairs. Multiple connections on the same server can share the same server-side IP/Port pair as long as they are associated with different client-side IP/Port pairs, and the server would be able to hand...
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Can't find the 'libpq-fe.h header when trying to install pg gem

...nx), 11.10 (Oneiric Ocelot), 12.04 (Precise Pangolin), 14.04 (Trusty Tahr) and 18.04 (Bionic Beaver)): ... /usr/include/postgresql/libpq-fe.h ... So try installing libpq-dev or its equivalent for your OS: For Ubuntu/Debian systems: sudo apt-get install libpq-dev On Red Hat Linux (RHEL) systems:...
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Re-sign IPA (iPhone)

...rovisioning profile. Results in a new IPA signed with a enterprise account and a mobile provisioning profile for in house deployment (the mobile provisioning profile gets embedded to the IPA). Solution: Unzip the IPA unzip Application.ipa Remove old CodeSignature rm -r "Payload/Application.app...
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How to programmatically take a screenshot on Android?

... Here is the code that allowed my screenshot to be stored on an SD card and used later for whatever your needs are: First, you need to add a proper permission to save the file: <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> And this is the code (running in a...
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Socket 错误返回码详解 - C/C++ - 清泛网 - 专注C/C++及内核技术

...imed out Socket error 10061 - Connection refused Socket error 10064 - Host is down Socket error 10065 - No route to host Socket error 10067 - Too many processes Socket error 10091 - Network subsystem is unavailable Socket error 10092 - WINSOCK.DLL version out of range Socket error 1009...
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Run a batch file with Windows task scheduler

...e of the above method worked. I tried it this way as said it in a tutorial and it worked. Action: Start a program Program/script: cmd Add arguments: /c start "" "E:\Django-1.4.1\setup.bat" Worked for me on Win7 Pro. You must have an account with a password (blank passwords are no good) ...
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Alarm Manager Example

... until the phone turns off. Add to Manifest.xml: ... <uses-permission android:name="android.permission.WAKE_LOCK"></uses-permission> ... <receiver android:process=":remote" android:name=".Alarm"></receiver> ... Code in your class: package yourPackage; import android.app....
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CGContextDrawImage draws image upside down when passed UIImage.CGImage

...GContextDrawImage method gets the underlying raw image data with no understanding of orientation. share | improve this answer | follow | ...
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How do you update Xcode on OSX to the latest version?

...Store Look in the top right for the updates section (may also be in lefthand column "Updates"..) Find Xcode & click Update share | improve this answer | follow ...
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best way to add license section to iOS settings bundle

...lication uses a number of third party components licensed under Apache 2.0 and similar licenses, which requires me to include various bits of text, this kind of thing: ...