Clients to avoid sending payloads larger than the maximum allowed size

Summary: ^

Reviewed By: passy

Differential Revision: D48645400

fbshipit-source-id: ac262296f113298812803c12eccf5a37da1da2b7

android/src/main/cpp/sonar.cpp

@@ -343,6 +343,13 @@ class JFlipperWebSocket : public facebook::flipper::FlipperSocket {
     if (socket_ == nullptr) {
       return;
     }
+    // Ensure the payload size is valid before sending.
+    // The maximum allowed size for a message payload is 2^53 - 1. But that is
+    // for the entire message, including any additional metadata.
+    if (message.length() > pow(2, 53) - 1) {
+      throw std::length_error("Payload is too big to send");
+    }
+
     socket_->send(message);
     completion();
   }