bpo-31122: ssl.wrap_socket() now raises ssl.SSLEOFError rather than OSError when peer closes connection during TLS negotiation (GH-18772)



[bpo-31122](): ssl.wrap_socket() now raises ssl.SSLEOFError rather than OSError when peer closes connection during TLS negotiation

Reproducer: http://tiny.cc/f4ztnz (tiny url because some bot keeps renaming b.p.o.-nnn as bpo links)
diff --git a/Modules/_ssl.c b/Modules/_ssl.c
index 55a95dd..cb8f04a 100644
--- a/Modules/_ssl.c
+++ b/Modules/_ssl.c
@@ -805,10 +805,11 @@
                         errno = err.c;
                         return PyErr_SetFromErrno(PyExc_OSError);
                     }
-                    Py_INCREF(s);
-                    s->errorhandler();
-                    Py_DECREF(s);
-                    return NULL;
+                    else {
+                        p = PY_SSL_ERROR_EOF;
+                        type = PySSLEOFErrorObject;
+                        errstr = "EOF occurred in violation of protocol";
+                    }
                 } else { /* possible? */
                     p = PY_SSL_ERROR_SYSCALL;
                     type = PySSLSyscallErrorObject;