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Artificially create a connection timeout error
...nswered Sep 19 '08 at 10:02
AlexanderAlexander
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Thin web server: `start_tcp_server': no acceptor (RuntimeError) after git branch checkout
A Rails 3.2.0 app, working fine with Thin web server, both locally and on Heroku cedar stack.
9 Answers
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Detecting iOS / Android Operating system
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You can test the user agent string:
/**
* Determine the mobile operating system.
* This function returns one of 'iOS', 'Android', 'Windows Phone', or 'unknown'.
*
* @returns {String}
*/
function getMobileOperatingSystem() {
var userAgent = navig...
Pinging servers in Python
...ll. This avoids shell injection vulnerability in cases where your hostname string might not be validated.
import platform # For getting the operating system name
import subprocess # For executing a shell command
def ping(host):
"""
Returns True if host (str) responds to a ping request....
What is the overhead of creating a new HttpClient per call in a WebAPI client?
...ndler = new HttpClientHandler(); //never dispose this
HttpClient GetClient(string token)
{
//client code can dispose these HttpClient instances
return new HttpClient(_sharedHandler, disposeHandler: false)
{
DefaultRequestHeaders =
{
Authorization = new...
NGINX to reverse proxy websockets AND enable SSL (wss://)?
I'm so lost and new to building NGINX on my own but I want to be able to enable secure websockets without having an additional layer.
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How do I log a Python error with debug information?
... problem is that traceback lines could have \n inside, so we need to do an extra work to get rid of this line endings:
import logging
logger = logging.getLogger('your_logger_here')
def log_app_error(e: BaseException, level=logging.ERROR) -> None:
e_traceback = traceback.format_exception(e...
What is the difference between HTTP_HOST and SERVER_NAME in PHP?
What is the difference between HTTP_HOST and SERVER_NAME in PHP?
10 Answers
10
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Where can I get a list of Ansible pre-defined variables?
...at Ansible provide some pre-defined variables that we can use in playbooks and template files. For example, the host ip address is ansible_eth0.ipv4.address. Googleing and searching the docs I cound't find a list of all available variables. Would someone list them for me?
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How to execute mongo commands through shell scripts?
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I had to specify the connection string like mongo <ip>:<port>/db --eval "printjson(db.serverStatus())" or mongo <ip>:<port>/db < mongoCommands.js to prevent it from always connecting to "test"
– dev
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