protocols: add websocket mentions

Closes curl#264

protocols/curl.md

@@ -162,3 +162,15 @@ terminal connection. See RFC 854. TELNET servers and clients use TCP port 23.
 The Trivial File Transfer Protocol (TFTP) is a protocol for doing simple file
 transfers over UDP to get a file from or put a file onto a remote host. TFTP
 servers and clients use UDP port 69.
+
+## WS
+
+WebSocket is a bidirectional TCP-like protocol, setup over an HTTP(S)
+request. WS is the scheme for the clear text version done over plain HTTP.
+Experimental support for this was added to curl 7.86.0.
+
+## WSS
+
+WebSocket is a bidirectional TCP-like protocol, setup over an HTTP(S)
+request. WSS is the scheme for the secure version done over HTTPS.
+Experimental support for this was added to curl 7.86.0.

protocols/protocols.md

@@ -20,7 +20,8 @@ transfer.
 The latest curl (as of this writing) supports these protocols:
 
 DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS,
-MQTT, POP3, POP3S, RTMP, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, TELNET, TFTP
+MQTT, POP3, POP3S, RTMP, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, TELNET, TFTP,
+WS, WSS
 
 To complicate matters further, the protocols often exist in different versions
 or flavors as well.

wordlist.txt

@@ -540,6 +540,8 @@ vtls
 Warta
 WAV
 WB
+WS
+WSS
 web page
 WebSocket
 whitespace