sip/parser: accept valid chars

Accepts valid characters as defined in RFC3261.

rust/src/sip/parser.rs

@@ -15,7 +15,7 @@
  * 02110-1301, USA.
  */
 
-// written by Giuseppe Longo <giuseppe@glono.it>
+// written by Giuseppe Longo <giuseppe@glongo.it>
 
 use nom7::bytes::streaming::{take, take_while, take_while1};
 use nom7::character::streaming::{char, crlf};
@@ -57,9 +57,13 @@ pub struct Response {
     pub body_len: u16,
 }
 
+/**
+ * Valid tokens and chars are defined in RFC3261:
+ * https://www.rfc-editor.org/rfc/rfc3261#section-25.1
+ */
 #[inline]
 fn is_token_char(b: u8) -> bool {
-    is_alphanumeric(b) || b"!%'*+-._`".contains(&b)
+    is_alphanumeric(b) || b"!%'*+-._`~".contains(&b)
 }
 
 #[inline]
@@ -69,7 +73,7 @@ fn is_method_char(b: u8) -> bool {
 
 #[inline]
 fn is_request_uri_char(b: u8) -> bool {
-    is_alphanumeric(b) || is_token_char(b) || b"~#@:".contains(&b)
+    is_alphanumeric(b) || is_token_char(b) || b"~#@:;=?+&$,/".contains(&b)
 }
 
 #[inline]