Merge pull request #22 from mxinden/optional-ls

README.md: Mark `ls` as optional
multiformats · Sep 27, 2022 · 77f0b44 · 77f0b44
2 parents c05dd72 + 94f37ea
commit 77f0b44
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/README.md b/README.md
@@ -87,7 +87,7 @@ for example:
 
 #### Listing
 
-It is also possible to "list" the available protocols. A list message is simply:
+Implementations MAY support "listing" of the available protocols. A list message is simply:
 
 ```
 ls\n
@@ -139,6 +139,8 @@ For example
 < ...
 ```
 
+Note that `ls` support is OPTIONAL, i.e. implementations MAY support sending and/or receiving `ls`. This in turn implies that implementations MUST NOT depend on a remote node supporting `ls`.
+
 #### Implementation Recommendations
 
 **Protocol Selection**