Versions 1.4.0 and later break code that uses more than one WiFiServer and socket

[ocrdu]

The change in WebSocketServer.cpp involving _lastSock ("check previous received client socket for data before querying a new one") broke one of my sketches that uses two WiFiServer-s and two sockets, one for a web server on port 80 and the other for a websocket server on port 8080.

Setting up the websocket works fine, but once the webserver on port 80 has processed a request, data from the websocket client (web browser) starts ending up on port 80 (the previously used socket) and not on port 8080 (where the websocket server is).

I'm not sure, but could it be that the change involving _lastSock needs a check to see if the endpoints (IP/port) of sock and lastsock are the same? It seems it is cross-connecting two different sockets now.

Anyway, the sketch below works fine with 1.3.0, but not with 1.4.0 or later:

#include <WiFiNINA.h>
#include <WebSocketServer.h>
#include <Arduino_LSM6DS3.h>
#include <Base64.h>
#include <RTCZero.h>
#include "wifi_secrets.h"

#define DEBUG 1

#ifdef DEBUG
  #define Sprint(a) (Serial.print(a))
  #define Sprintln(a) (Serial.println(a))
#else
  #define Sprint(a)
  #define Sprintln(a)
#endif

char ssid[] = SECRET_SSID;
char pass[] = SECRET_PASS;
const int IPLastByte = 99;
const int webPort = 80;
const int socketPort = 8080;
WiFiServer webServer(webPort);
WiFiServer socketServer(socketPort);
WebSocketServer webSocketServer;
WiFiClient socketClient;
RTCZero rtc;
const int ledPin = 12;
boolean on = false;
float volume = 0;
int cowbell = 1000;
float zdata[] = {1,1,1,1,1};
int zdatasize = sizeof(zdata) / sizeof(zdata[0]);
float tdata[] = {20,20,20,20,20,20,20,20,20,20};
int tdatasize = sizeof(tdata) / sizeof(tdata[0]);
int ledState = 0;
unsigned long epoch;
unsigned long previousCowbellMillis = 0;
unsigned long previousGravityMillis = 0;
unsigned long previousClockMillis = 0;
unsigned long previousAdjustMillis = 0;
char webpage_base64[] = "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";

void setup() {
  #ifdef DEBUG
  Serial.begin(115200);
  #endif
  pinMode(LED_BUILTIN, OUTPUT);
  pinMode(ledPin, OUTPUT);
  rtc.begin();
  IMU.begin();
  WiFiConnect();
}

void loop() {

  if (WiFi.status() != WL_CONNECTED) {
    digitalWrite(LED_BUILTIN, LOW);
    Sprintln("\n--Lost WiFi connection");
    WiFi.end();
    WiFiConnect();
  }

  //if (!socketClient.connected()) {
    WiFiClient webClient = webServer.available();
    if (webClient.connected()) {
      Sprint("\n--New client: "); Sprint(webClient.remoteIP()); Sprint(":"); Sprintln(webClient.remotePort());
      String header = "";
      while (webClient.available()) {
        char c = webClient.read();
        if (c != '\r') {
          header += c;
        }
        if (header.substring(0,1) != "G" && header.substring(0,2) != "GE" && header.substring(0,3) != "GET") {
          Sprintln("--Wrong method in header");
          webClient.println("HTTP/1.1 405 Method Not Allowed\nAllow: GET\nContent-Type: text/plain; charset=utf-8\n\n405 Method not allowed; GET only\n");
          webClient.stop();
          Sprintln("--Client disconnected");
        }
        if (header.length() > 512) {
          Sprintln("--Header too long");
          webClient.println("HTTP/1.1 431 Request Header Fields Too Large\nContent-Type: text/plain; charset=utf-8\n\n431 Request header fields too large\n");
          webClient.stop();
          Sprintln("--Client disconnected");
        }
        if (header.substring(header.length() - 2) == "\n\n") {
          Sprint(header.substring(0, header.length() - 1));
          if (header.indexOf("GET / HTTP") > -1) {
            const int webpage_base64_length = sizeof(webpage_base64);
            const int webpage_gz_length = base64_dec_len(webpage_base64, webpage_base64_length);
            char webpage_gz[webpage_gz_length];
            base64_decode(webpage_gz, webpage_base64, webpage_base64_length);
            int packetsize = 1024;
            int done = 0;
            webClient.println("HTTP/1.1 200 OK\nContent-Type: text/html\nContent-Encoding: gzip\n");
            while (webpage_gz_length > done) {
              webClient.write(webpage_gz + done, packetsize * sizeof(char));
              done = done + packetsize;
              if (webpage_gz_length - done < packetsize) {
                packetsize = webpage_gz_length - done;
              }
            }
            Sprintln("--Interface webpage sent");
          } else if (header.indexOf("GET /author HTTP") > -1) {
            webClient.println("HTTP/1.1 200 OK\nContent-Type: text/plain; charset=utf-8\n\nOscar den Uijl, oscar@den-uijl.nl\n");
            Sprintln("--Email address sent");
          } else {
            webClient.println("HTTP/1.1 404 Not Found\nContent-Type: text/plain; charset=utf-8\n\n404 Not Found\n");
            Sprintln("--Page not found");
          }
          webClient.stop();
          Sprintln("--Client disconnected");
        }
      }
    }
  //}

  if (!socketClient.connected()) {
    socketClient = socketServer.available();
    if (socketClient.connected() && webSocketServer.handshake(socketClient)) {
      Sprint("\n--Websocket connected to: "); Sprint(socketClient.remoteIP()); Sprint(":"); Sprintln(socketClient.remotePort());
      if (on) {
        webSocketServer.sendData("sw:true");
      } else {
        webSocketServer.sendData("sw:false");
      }
      webSocketServer.sendData("volume:" + (String)round((volume*100)/255));
      webSocketServer.sendData("cowbell:" + (String)((1000-cowbell)/10));
      Sprintln("\n--Settings sent");
    } else {
      Sprintln("\n--Couldn't connect websocket");
      socketClient.stop();
      delay(100);
    }
  }

  if (socketClient.connected()) {
    String data = webSocketServer.getData();
    if (data.length() > 0) {
      String name = data.substring(0, data.indexOf(":"));
      String value = data.substring(data.indexOf(":") + 1);
      boolean goodSettings = true;
      if (name == "switch") {
        on = (value == "true");
      } else if (name == "volume") {
        volume = (value.toFloat()*255)/100;
        if (cowbell == 1000) {
          analogWrite(ledPin, (int) round(volume));
        }
      } else if (name == "cowbell") {
        cowbell = 1000 - (value.toInt()*10);
      } else {
        goodSettings = false;
        webSocketServer.sendData("message:Bad data; ignored");
      }
      if (goodSettings) {
        webSocketServer.sendData("message:" + name + " set to " + value);
      }
    }
  }
  
  unsigned long currentCowbellMillis = millis();
  if ((currentCowbellMillis - previousCowbellMillis) > cowbell) {
    previousCowbellMillis = currentCowbellMillis;   
    if (on) {
      if (cowbell == 1000) {
        analogWrite(ledPin, (int) round(volume));
      } else {
        if (ledState == 0) {
          ledState = 1;
          analogWrite(ledPin, (int) round(volume));
        } else {
          ledState = 0;
          analogWrite(ledPin, 0);
        }
      }
    } else {
      analogWrite(ledPin, 0);
    }
  }

  float x, y, z, zsum = 0;
  if (IMU.accelerationAvailable()) {
    IMU.readAcceleration(x, y, z);
    if (x > 0.2 || x < -0.2 || y > 0.2 || y < -0.2 || z > 1.2 || z < 0.8) {
      analogWrite(ledPin, 0);
      Sprintln("\nTILT!!");
      if (on) {
        on = false;
        if (socketClient.connected()) {
          webSocketServer.sendData("sw:false");
        }
      }
    }
    for (int i=0; i<zdatasize-1; i++) {
      zdata[i] = zdata[i+1];
    }
    zdata[zdatasize-1] = z;
    for (int i=0; i<zdatasize; i++) {
      zsum += zdata[i];
    }
    if (socketClient.connected()) {
      unsigned long currentGravityMillis = millis();
      if ((currentGravityMillis - previousGravityMillis) > 2000) {
        previousGravityMillis = currentGravityMillis;
        webSocketServer.sendData("gravity:" + String(zsum/zdatasize, 3));
      }
    }
  }

  unsigned long currentClockMillis = millis();
  if (socketClient.connected()) {
    if ((currentClockMillis - previousClockMillis) > 1000) {
      previousClockMillis = currentClockMillis;
      webSocketServer.sendData("time:" + String(rtc.getEpoch()));
    }
  }

  unsigned long currentAdjustMillis = millis();
  if ((currentAdjustMillis - previousAdjustMillis) > 300000) {
    previousAdjustMillis = currentAdjustMillis;
    epoch = WiFi.getTime();
    if (epoch > 0) {
      rtc.setEpoch(epoch);
      Sprintln("\n--RTC adjusted");
    };
  }

}

void WiFiConnect() {
  WiFi.setHostname("nano-webserver");
  while (WiFi.status() != WL_CONNECTED) {
    Sprintln("Connecting to " + (String)ssid + " ...");
    WiFi.begin(ssid, pass);
    delay(5000);
  }
  IPAddress IP = WiFi.localIP();
  IP[3] = IPLastByte;
  WiFi.config(IP, WiFi.gatewayIP(), WiFi.gatewayIP(), WiFi.subnetMask());
  Sprintln("Connected to " + (String)ssid);
  int tries = 5;
  do {
    Sprintln("Getting NTP time ...");
    epoch = WiFi.getTime();
    tries--;
    delay(500);
  } while (epoch == 0 && tries > 0);
  if (tries == 0) {
    Sprintln("Failed to get NTP time");
  } else {
    rtc.setEpoch(epoch);
    Sprintln("RTC set to NTP time");
  }
  webServer.begin();
  socketServer.begin();
  #ifdef DEBUG
  printWifiStatus();
  #endif
  WiFi.lowPowerMode();
  digitalWrite(LED_BUILTIN, HIGH);
}

#ifdef DEBUG
void printWifiStatus() {
  Sprint("SSID: "); Sprintln(WiFi.SSID());
  Sprint("Signal strength (RSSI): "); Sprint(WiFi.RSSI()); Sprintln(" dBm");
  Sprint("IP address: "); Sprintln(WiFi.localIP());
  Sprint("Gateway: "); Sprintln(WiFi.gatewayIP());
  Sprint("Netmask: "); Sprintln(WiFi.subnetMask());
  Sprint("Websocket is at http://"); Sprint(WiFi.localIP()); Sprintln(":" + (String)socketPort + "/");
}
#endif

[Rocketct]

hi @ocrdu can i ask for shortest sketch to reproduce your issue? the one you share is quite too long ad complex

[ocrdu]

Hi Rocketct,

I stripped out code; 138 lines now. Uses https://github.com/ocrdu/NINA-Websocket for the websocket functionality.

The problem is still present in WiFiNINA 1.6; websocket communications on port 8080 will also trigger the webserver on port 80, as can be seen on the serial monitor.

Changing WiFiClient WiFiServer::available(byte* status) in WiFiServer.cpp back to how it was in WiFiNINA 1.3 (the bit having to do with _lastSock) solves this.

Here it is:

#include <WiFiNINA.h>
#include <WebSocketServer.h>
#include <Base64.h>
#include "wifi_secrets.h"

#define Sprint(a) (Serial.print(a))
#define Sprintln(a) (Serial.println(a))

char ssid[] = SECRET_SSID;
char pass[] = SECRET_PASS;
const int IPLastByte = 99;
const int webPort = 80;
const int socketPort = 8080;
WiFiServer webServer(webPort);
WiFiServer socketServer(socketPort);
WebSocketServer webSocketServer;
WiFiClient socketClient;
boolean on = false;
char webpage_base64[] = "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";

void setup() {
  Serial.begin(115200);
  pinMode(LED_BUILTIN, OUTPUT);
  WiFiConnect();
}

void loop() {

  if (WiFi.status() != WL_CONNECTED) {
    digitalWrite(LED_BUILTIN, LOW);
    Sprintln("\n--Lost WiFi connection");
    WiFi.end();
    WiFiConnect();
  }

  //if (!socketClient.connected()) {
    WiFiClient webClient = webServer.available();
    if (webClient.connected()) {
      Sprint("\n--New client: "); Sprint(webClient.remoteIP()); Sprint(":"); Sprintln(webClient.remotePort());
      String header = "";
      while (webClient.available()) {
        char c = webClient.read();
        if (c != '\r') {
          header += c;
        }
        if (header.substring(header.length() - 2) == "\n\n") {
          Sprint(header.substring(0, header.length() - 1));
          if (header.indexOf("GET / HTTP") > -1) {
            const int webpage_base64_length = sizeof(webpage_base64);
            const int webpage_gz_length = base64_dec_len(webpage_base64, webpage_base64_length);
            char webpage_gz[webpage_gz_length];
            base64_decode(webpage_gz, webpage_base64, webpage_base64_length);
            int packetsize = 1024;
            int done = 0;
            webClient.println("HTTP/1.1 200 OK\nContent-Type: text/html\nContent-Encoding: gzip\n");
            while (webpage_gz_length > done) {
              if (webpage_gz_length - done < packetsize) {
                packetsize = webpage_gz_length - done;
              }
              webClient.write(webpage_gz + done, packetsize * sizeof(char));
              done = done + packetsize;
            }
            Sprintln("--Interface webpage sent");
          } else {
            webClient.println("HTTP/1.1 404 Not Found\nContent-Type: text/plain; charset=utf-8\n\n404 Not Found\n");
            Sprintln("--Page not found");
          }
          webClient.stop();
          Sprintln("--Client disconnected");
        }
      }
    }
  //}

  if (!socketClient.connected()) {
    socketClient = socketServer.available();
    if (socketClient.connected() && webSocketServer.handshake(socketClient)) {
      Sprint("\n--Websocket connected to: "); Sprint(socketClient.remoteIP()); Sprint(":"); Sprintln(socketClient.remotePort());
      if (on) {
        webSocketServer.sendData("sw:true");
      } else {
        webSocketServer.sendData("sw:false");
      }
      Sprintln("\n--Settings sent");
    } else {
      //Sprintln("\n--Couldn't connect websocket");
      socketClient.stop();
      delay(100);
    }
  }

  if (socketClient.connected()) {
    String data = webSocketServer.getData();
    if (data.length() > 0) {
      String name = data.substring(0, data.indexOf(":"));
      String value = data.substring(data.indexOf(":") + 1);
      boolean goodSettings = true;
      if (name == "switch") {
        on = (value == "true");
      } else {
        goodSettings = false;
        webSocketServer.sendData("message:Bad data; ignored");
      }
      if (goodSettings) {
        webSocketServer.sendData("message:" + name + " set to " + value);
      }
    }
  }

}

void WiFiConnect() {
  while (WiFi.status() != WL_CONNECTED) {
    Sprintln("Connecting to " + (String)ssid + " ...");
    WiFi.begin(ssid, pass);
    delay(5000);
  }
  IPAddress IP = WiFi.localIP();
  IP[3] = IPLastByte;
  WiFi.config(IP, WiFi.gatewayIP(), WiFi.gatewayIP(), WiFi.subnetMask());
  Sprintln("Connected to " + (String)ssid);
  webServer.begin();
  socketServer.begin();
  printWifiStatus();
  WiFi.lowPowerMode();
  digitalWrite(LED_BUILTIN, HIGH);
}

void printWifiStatus() {
  Sprint("SSID: "); Sprintln(WiFi.SSID());
  Sprint("Signal strength (RSSI): "); Sprint(WiFi.RSSI()); Sprintln(" dBm");
  Sprint("IP address: "); Sprintln(WiFi.localIP());
  Sprint("Gateway: "); Sprintln(WiFi.gatewayIP());
  Sprint("Netmask: "); Sprintln(WiFi.subnetMask());
  Sprint("Webpage is at http://"); Sprint(WiFi.localIP()); Sprintln("/");
  Sprint("Websocket is at http://"); Sprint(WiFi.localIP()); Sprintln(":" + (String)socketPort + "/");
}

[Gostas]

I have the same problem. I open one SSL connection successfully, but when I attempt to open a second one at the same time, both of my connections crash and sometimes the wifi module in the Arduino Uno Wi-Fi Rev.2 resets

[ocrdu]

@Gostas:

If it is the same problem, it should go away when you use https://github.com/ocrdu/WiFiNINA instead of the "official" one.

Let us know!

[Gostas]

Sorry for the late response, I just had time to look at this again. My issue is very similar but is concerned with connecting with SSL using the WiFiSSLClient, so your fixes are not applicable. The code for the connectSSL method actually has the same problem; it doesn't keep the last used socket. I did some changes very similar to yours, but it seems like I can only have 1 active SSL connection at the same time, because it doesn't connect using a different socket number. Therefore I believe it is a limitation of the NINA-W102 chip

[Gostas]

Also, it seems like ServerDrv::getSocket() always returns 4. Do you happen to know what socket numbers are possible or how many different sockets are supported?