diff --git a/src/common.h b/src/common.h
index c387c0f..a367367 100644
--- a/src/common.h
+++ b/src/common.h
@@ -31,7 +31,7 @@
 
 /** handlers **/
 #if (__STDC_VERSION__ >= 202000L)
-typedef void* xmpp_void_handler;
+typedef void *xmpp_void_handler;
 #else
 typedef int (*xmpp_void_handler)();
 #endif
diff --git a/src/tls.c b/src/tls.c
index c548d82..e15fbb1 100644
--- a/src/tls.c
+++ b/src/tls.c
@@ -74,6 +74,23 @@ xmpp_conn_t *xmpp_tlscert_get_conn(const xmpp_tlscert_t *cert)
     return cert->conn;
 }
 
+/** Get the userdata of a Strophe connection which is assigned to this
+ *  certificate.
+ *
+ *  @param cert a Strophe TLS certificate object
+ *
+ *  @return the userdata of a Strophe connection object where this certificate
+ *  originates from
+ *
+ *  @ingroup TLS
+ */
+void *xmpp_tlscert_get_userdata(const xmpp_tlscert_t *cert)
+{
+    if (cert->conn == NULL)
+        return NULL;
+    return cert->conn->userdata;
+}
+
 /** Get the complete PEM of this certificate.
  *
  *  @param cert a Strophe TLS certificate object
diff --git a/strophe.h b/strophe.h
index 65f2bf9..18ca3e1 100644
--- a/strophe.h
+++ b/strophe.h
@@ -642,6 +642,7 @@ void xmpp_ctx_set_timeout(xmpp_ctx_t *ctx, unsigned long timeout);
 
 xmpp_ctx_t *xmpp_tlscert_get_ctx(const xmpp_tlscert_t *cert);
 xmpp_conn_t *xmpp_tlscert_get_conn(const xmpp_tlscert_t *cert);
+void *xmpp_tlscert_get_userdata(const xmpp_tlscert_t *cert);
 const char *xmpp_tlscert_get_pem(const xmpp_tlscert_t *cert);
 const char *xmpp_tlscert_get_dnsname(const xmpp_tlscert_t *cert, size_t n);
 const char *xmpp_tlscert_get_string(const xmpp_tlscert_t *cert,