Test

fix rtc over tcp crash when stop rtc publish. #3650

Job	Run time
utest-regression-blackbox-test	9m 30s
multiple-arch-aarch64	22m 35s
cygwin64-cache	1m 49s
multiple-arch-armv7	21m 58s
cygwin64	15m 5s
fast	1s
build-ubuntu18	3m 12s
build-ubuntu20	3m 25s
build-cross-arm	5m 15s
build-centos7	5m 7s
build-ubuntu16	3m 13s
build-cross-aarch64	5m 12s
coverage	3m 44s
multiple-arch-amd64	2m 19s
test-done	1s
	1h 42m 26s

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