[Bench] Fix a few issues in benchmark #952
Merged
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This PR fixes two issues:
When we use multiple TCP connections, requests are broken into chunks and each chunk will be sent in parallel. We need to make sure that when we break them into chunks, we don't break any tx/cert pair, which would end up cert sending earlier before tx, causing tx failures. Added an assertion for this to make sure correct config is provided.
batch_send_one_chunk
is incorrect. It would always miss the last response. Fix it.