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Artificially create a connection timeout error

I've had a bug in our software that occurs when I receive a connection timeout. These errors are very rare (usually when my connection gets dropped by our internal network). How can I generate this kind of effect artificially so I can test our software? ...
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Check if something is (not) in a list in Python

I have a list of tuples in Python , and I have a conditional where I want to take the branch ONLY if the tuple is not in the list (if it is in the list, then I don't want to take the if branch) ...
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Difference between Role and GrantedAuthority in Spring Security

There are concepts and implementations in Spring Security, such as the GrantedAuthority interface to get an authority to authorize/control an access. ...
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How to write a scalable Tcp/Ip based server

I am in the design phase of writing a new Windows Service application that accepts TCP/IP connections for long running connections (i.e. this is not like HTTP where there are many short connections, but rather a client connects and stays connected for hours or days or even weeks). ...
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Under what circumstances is an SqlConnection automatically enlisted in an ambient TransactionScope T

What does it mean for an SqlConnection to be "enlisted" in a transaction? Does it simply mean that commands I execute on the connection will participate in the transaction? ...
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Java8: Why is it forbidden to define a default method for a method from java.lang.Object

Default methods are a nice new tool in our Java toolbox. However, I tried to write an interface that defines a default version of the toString method. Java tells me that this is forbidden, since methods declared in java.lang.Object may not be default ed. Why is this the case? ...
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How to define several include path in Makefile

New to C++; Basic understanding of includes, libraries and the compile process. Did a few simple makefiles yet. 2 Answers ...
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If I revoke an existing distribution certificate, will it mess up anything with existing apps?

I built an iOS app for an organization that has an app already on the store. After weeks of trying to get the guy who has the key to sign the app, they finally came back and said, "Just get it done!". So I am wondering how to proceed. If I go into the provisioning portal, and revoke the dist certifi...
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What data is stored in Ephemeral Storage of Amazon EC2 instance?

I am trying to stop a Amazon EC2 instance and get the warning message 4 Answers 4 ...
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How to convert integer timestamp to Python datetime

I have a data file containing timestamps like "1331856000000". Unfortunately, I don't have a lot of documentation for the format, so I'm not sure how the timestamp is formatted. I've tried Python's standard datetime.fromordinal() and datetime.fromtimestamp() and a few others, but nothing matches...