fix tests in network crate #67

Job	Run time
docs	23s
clippy	26s
cfg-check	19s
doctest	1m 33s
feature-checks	14s
fmt	12s
no-std	17s
test ubuntu-latest stable --no-default-features	1m 16s
wasm-unknown	20s
test ubuntu-latest stable	1m 11s
wasm-wasi	45s
test ubuntu-latest nightly --no-default-features	1m 3s
test ubuntu-latest nightly	1m 9s
test ubuntu-latest 1.76 --no-default-features	32s
test ubuntu-latest 1.76	24s
test windows-latest stable --no-default-features	4m 39s
test windows-latest stable	4m 37s
test windows-latest nightly --no-default-features	4m 30s
test windows-latest nightly	4m 15s
test windows-latest 1.76 --no-default-features	1m 38s
test windows-latest 1.76	1m 59s
test ubuntu-latest stable --all-features	33s
test ubuntu-latest nightly --all-features	37s
	32m 52s

Provide feedback