Export sslHandle in net and asyncnet. (#17573)

lib/pure/asyncnet.nim

@@ -736,6 +736,11 @@ proc close*(socket: AsyncSocket) =
         raiseSSLError()
 
 when defineSsl:
+  proc sslHandle*(self: AsyncSocket): SslPtr =
+    ## Retrieve the ssl pointer of `socket`.
+    ## Useful for interfacing with `openssl`.
+    self.sslHandle
+  
   proc wrapSocket*(ctx: SslContext, socket: AsyncSocket) =
     ## Wraps a socket in an SSL context. This function effectively turns
     ## `socket` into an SSL socket.

lib/pure/net.nim

@@ -501,6 +501,11 @@ when defineSsl:
   ERR_load_BIO_strings()
   OpenSSL_add_all_algorithms()
 
+  proc sslHandle*(self: Socket): SslPtr =
+    ## Retrieve the ssl pointer of `socket`.
+    ## Useful for interfacing with `openssl`.
+    self.sslHandle
+    
   proc raiseSSLError*(s = "") =
     ## Raises a new SSL error.
     if s != "":