title: What's the max number of retries in case of a continuously dropped SYN packet?
body: <p>There's a product (that will stay unnamed) that suffers from a peculiar feature/issue.
  It will drop new SYN packets if it is overloaded. This may not seem unreasonable to some. It may seem unthinkable to others. Be that as it may.</p>
  
  <p>How many times will an upstream TCP client retry sending the SYN before giving up? Is this number based on a RFC or standard or is it just industry norm?</p>
  
  <p>How about SCTP and INIT?</p>