Abort PIBD attempt and fall back to downloading TxHashset.zip if the node has not been able to determine a single PIBD capable peer advertising the greatest work chain for 60 seconds. There is no real justification for this duration, so it may be tweaked in future.
Also a fix to re-request segments if they have not been received and applied within 60 seconds (to prevent stalling a PMMR reconstruction due to a single unresponsive node). Again, no justification for this duration.
Also tested a full sync on mainnet with latest code, all working (though we won't be turning on mainnet PIBD sync just yet)
Also tested a full sync on mainnet with latest code, all working (though we won't be turning on mainnet PIBD sync just yet)