[osx-port] use IPPROTO_TCP instead of SOL_TCP
[osx-port] fix sendfile on osx
Merge branch 'osx-port' of github.com:xzero/x0 into osx-port
Merge branch 'osx-port' of github.com:xzero/x0 into osx-port
dead code
fixes bug introduced in 4c77de1f429577b66c7b23c1601477612173b4ad
fix
[osx-port] fix O_NOATIME on osx
fix
cleanup
examples: app1 fixes
examples: doh'