How to keep the client connection when LB_FAILED?

That doesn't work either. It appears that the TCP:payload is already empty at the point the connection fails. I put some print statements to the iRule to display the [TCP::payload length] value, it shows 0. I evaluated this for both the clientside and serverside context, and both show 0. I am suspecting that once a pool statement is issued, the TCP::payload will be transferred to another internal buffer, waiting to be sent out. If this buffer is locked up or not freed for whatever reason, then any subsequent incoming request will not be able to get through because they won't be able to go into this buffer before they are forwarded to the destination.

 

 

I am just guessing. Big IP might work differently. But, to me, definitely something is blocking the traffic to flow.