To catch all possible exceptions from a network call, we need to rescue many error classes like this:

rescue SocketError, Errno::ECONNREFUSED, Errno::ECONNRESET, Errno::ECONNABORTED, Errno::EHOSTUNREACH, OpenSSL::SSL::SSLError, MyHttpLib::BadResponse

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You can shorten this a bit by rescuing SystemCallError Show archive.org snapshot , which is a base class for all Errno:: exceptions:

rescue SocketError, SystemCallError, OpenSSL::SSL::SSLError, MyHttpLib::BadResponse

Some high-level HTTP client libraries convert these errors into a single base class for easier handling E.g. Http.rb Show archive.org snapshot provides a HTTP::Error class and you only need to rescue this one class.