[Backport][0.8 to 0.7] | fix(net,io): don't confuse a 0-length iovec element or an error with EOF (#1602) (#1603) (#1604) - #1607

[Backport][0.8 to 0.7] | fix(net,io): don't confuse a 0-length iovec element or an error with EOF (#1602) (#1603) (#1604)#1607

photonlibos wants to merge 1 commit into

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backport-pr-62244b5a3726775cf70ad5c26a1345e562072094-0.7alibaba/PhotonLibOS:backport-pr-62244b5a3726775cf70ad5c26a1345e562072094-0.7Copy head branch name to clipboard