SSL_shutdown() only if not already closed by remote (#413)

madMAx43v3r · web-flow · commit 1ccddd1b0b33 · 2020-04-06T10:30:21.000-04:00
diff --git a/httplib.h b/httplib.h
@@ -4467,7 +4467,9 @@ inline bool process_and_close_socket_ssl(
     }
   }
 
-  SSL_shutdown(ssl);
+  if (ret) {
+    SSL_shutdown(ssl);		// shutdown only if not already closed by remote
+  }
   {
     std::lock_guard<std::mutex> guard(ctx_mutex);
     SSL_free(ssl);

Original file line number	Diff line number	Diff line change
`@@ -4467,7 +4467,9 @@ inline bool process_and_close_socket_ssl(`
`4467`	`4467`	`}`
`4468`	`4468`	`}`
`4469`	`4469`
`4470`		`- SSL_shutdown(ssl);`
	`4470`	`+ if (ret) {`
	`4471`	`+ SSL_shutdown(ssl); // shutdown only if not already closed by remote`
	`4472`	`+ }`
`4471`	`4473`	`{`
`4472`	`4474`	`std::lock_guard<std::mutex> guard(ctx_mutex);`
`4473`	`4475`	`SSL_free(ssl);`