Add support for tls protocol

[whereistejas]

Hi @mxinden,
Creating this PR to close the issue #47.
This PR refers the Go code from PR 153.

i have a couple of questions regarding the tests, it seems like we are missing a few tests:

1. construct_success
2. TestTextMarshaler

[mxinden]

Thanks @whereistejas for the help!

Could you extend the <Protocol as Arbitrary> implementation with the new Protocol Tls?

rust-multiaddr/tests/lib.rs

Lines 86 to 89 in 95d5e64

	impl Arbitrary for Proto {
	fn arbitrary<G: Gen>(g: &mut G) -> Self {
	use Protocol::*;
	match u8::arbitrary(g) % 25 { // TODO: Add Protocol::Quic

construct_success

Feel free to add additional test cases.

TestTextMarshaler

Would this not be covered by to_from_str_identityt?

[mxinden]

👍 for documenting this.

I am not exactly sure what the source of truth is, though I think we should link to multiformats/multiaddr instead.

Suggested change

	// All these values are obtained by converting hexadecimal protocol codes to u32.
	// The protocol codes are present in multiformats/multicodec repository.
	// Protocols as well as their corresponding codes are defined in
	// https://github.com/multiformats/multiaddr/blob/master/protocols.csv .

[whereistejas]

Hi @mxinden , I have added the extra tests and added the Tls proto, too. Please, let me know if any other changes are pending/required. :)

[mxinden]

As far as I can tell you would need to adjust the Arbitrary implementation of Proto to potentially generate the value 25. The modulo operation is a bit error prone, though I don't know of a better solution.

-        match u8::arbitrary(g) % 25  { // TODO: Add Protocol::Quic
+        match u8::arbitrary(g) % 26  { // TODO: Add Protocol::Quic

[whereistejas]

@mxinden I have made the change you suggested.

[mxinden]

Wow, thank you for the quick turn-around time @whereistejas!

Would you mind including a changelog entry? Other than that, this looks good to me. Thanks.

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 65e438e..42a6fb7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+# 0.14.0 [unreleased]
+
+- Add support for `tls` protocol. See [PR 48].
+
+[PR 48]: https://github.com/multiformats/rust-multiaddr/pull/48
+
 # 0.13.0 [2021-07-08]
 
 - Update to multihash v0.14.0 (see [PR 44]).
diff --git a/Cargo.toml b/Cargo.toml
index 33cce4c..8162f62 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -7,7 +7,7 @@ keywords = ["multiaddr", "ipfs"]
 license = "MIT"
 name = "multiaddr"
 readme = "README.md"
-version = "0.13.0"
+version = "0.14.0"

[whereistejas]

Hi @mxinden, done!