Disconnect on large websocket message #21
Description
Hello!
I'm trying to use this library on an ESP32 against API's that stream very large messages (~40k).
It works fine for the smaller messages, however as soon as a large message (should be) received a WebsocketsEvent::ConnectionClosed event is emitted and the connection is dropped.
I did some brief digging and it looks like the TCP connection stops being available(), but I'm not clear why.
This example code demonstrates the problem:
#include <ArduinoWebsockets.h>
#include <WiFi.h>
const char* ssid = "SSID";
const char* password = "PASSWORD";
const char* websockets_connection_string = "wss://ws.blockchain.info/inv";
using namespace websockets;
void onMessageCallback(WebsocketsMessage message) {
Serial.print("Got Message: ");
Serial.println(message.data());
}
WebsocketsClient client;
void onEventsCallback(WebsocketsEvent event, String data) {
if(event == WebsocketsEvent::ConnectionOpened) {
Serial.println("ConnectionOpened");
} else if(event == WebsocketsEvent::ConnectionClosed) {
Serial.println("ConnectionClosed");
} else if(event == WebsocketsEvent::GotPong) {
Serial.println("GotPong");
}
}
void setup() {
Serial.begin(115200);
WiFi.begin(ssid, password);
for(int i = 0; i < 10 && WiFi.status() != WL_CONNECTED; i++) {
Serial.print(".");
delay(1000);
}
client.onMessage(onMessageCallback);
client.onEvent(onEventsCallback);
client.setCACert(nullptr);
client.connect(websockets_connection_string);
// Works - results in "GotPong"
client.ping();
// Works - results in "Got Message: {"op":"pong"}"
client.send("{\"op\":\"ping\"}");
// FAILS - results in "ConnectionClosed"
// This will cause ~40k of data to be returned down the websocket
client.send("{\"op\":\"ping_block\"}");
}
void loop() {
client.poll();
}
Any help very much appreciated.