After sending the headers message add a sync, so that we wait until the header message from the previous peer has been received before connecting additional peers. In the failed NetBSD run linked in #32090, the second node managed to complete the handshake and send its own headers message before the message from the first node was received.
Fixes #32090
by adding a sync, so that we wait until the header message from the
previous peer has been received before connecting additional peers.
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For details see: https://corecheck.dev/bitcoin/bitcoin/pulls/32148.
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| Type | Reviewers |
|---|---|
| ACK | maflcko |
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lgtm ACK 9f35d4d070b2097259c0bfada391d8ef847e256e
(This is not a clean backport and should be rare enough to not matter, so can probably skip the backport here)