autoperf | Ruby driver for httperf - automated load | Performance Testing library
kandi X-RAY | autoperf Summary
kandi X-RAY | autoperf Summary
For updated version, see: Autoperf is a ruby driver for httperf, designed to help you automate load and performance testing of any web application - for a single end point, or through log replay. More: To get started, first download & install httperf:
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of autoperf
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QUESTION
I'm using the ganymed-ssh-2 Java library to create a connection from one AWS EC2 to another (in the same VPC) and the 'connect()' command gives the following error:
...ANSWER
Answered 2019-Feb-20 at 11:18Reading the exception output it would suggest that one the key exchange algorithms supported on the server do not match any of those supported by the client.
Caused by: java.io.IOException: Cannot negotiate, proposals do not match.
You can easily see what the server supports by executing the command line
ssh -vv user@host
Most likely cause is either a cipher, HMAC or key exchange algorithm. I would take a guess at key exchange as there has been a lot of movement in those over the years and so modern servers may be configured for stronger key exchange after the discovery of vulnerabilities like Logjam
To actually fix the problem would require an upgrade in the client library to something that supports the algorithm that is missing.
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Install autoperf
On a UNIX-like operating system, using your system’s package manager is easiest. However, the packaged Ruby version may not be the newest one. There is also an installer for Windows. Managers help you to switch between multiple Ruby versions on your system. Installers can be used to install a specific or multiple Ruby versions. Please refer ruby-lang.org for more information.
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