feat: Add SNI support (#312)

Adds the JS part of multiformats/multiaddr#138

Author: MarcoPolo

src/convert.ts

@@ -52,6 +52,7 @@ export function convertToString (proto: number | string, buf: Uint8Array): strin
     case 55: // dns6
     case 56: // dnsaddr
     case 400: // unix
+    case 449: // sni
     case 777: // memory
       return bytes2str(buf)
 
@@ -89,6 +90,7 @@ export function convertToBytes (proto: string | number, str: string): Uint8Array
     case 55: // dns6
     case 56: // dnsaddr
     case 400: // unix
+    case 449: // sni
     case 777: // memory
       return str2bytes(str)
 

src/protocols-table.ts

@@ -37,6 +37,7 @@ export const table: Array<[number, number, string, boolean?, boolean?]> = [
   [445, 296, 'onion3'],
   [446, V, 'garlic64'],
   [448, 0, 'tls'],
+  [449, V, 'sni'],
   [460, 0, 'quic'],
   [461, 0, 'quic-v1'],
   [465, 0, 'webtransport'],

test/index.spec.ts

@@ -431,6 +431,13 @@ describe('variants', () => {
     expect(addr.toString()).to.equal(str)
   })
 
+  it('sni', () => {
+    const str = '/ip4/127.0.0.1/tcp/9090/tls/sni/example.com/ws'
+    const addr = multiaddr(str)
+    expect(addr).to.have.property('bytes')
+    expect(addr.toString()).to.equal(str)
+  })
+
   it('onion', () => {
     const str = '/onion/timaq4ygg2iegci7:1234'
     const addr = multiaddr(str)