https://github.com/cherrypy/cheroot/pull/776

--- cheroot-11.0.0/cheroot/test/test_ssl.py.orig
+++ cheroot-11.0.0/cheroot/test/test_ssl.py
@@ -24,6 +24,7 @@
     IS_LINUX,
     IS_MACOS,
     IS_PYPY,
+    IS_SOLARIS,
     IS_WINDOWS,
     bton,
     ntob,
@@ -732,6 +733,11 @@
             54,
             'Connection reset by peer',
         )
+    if IS_SOLARIS:
+        expected_error_code, expected_error_text = (
+            None,
+            'Remote end closed connection without response',
+        )
     if IS_WINDOWS:
         expected_error_code, expected_error_text = (
             10054,