Cannot connect to server

[shootdaj]

I tried for a few days to get your project working but I couldn't connect to the server. I've used two clients, a program that I've created and a Chrome extension called Smart Websocket Client. The first one actually sends OPC Packets but the second one is just a websocket client, but neither one is able to even connect. It says that it's connected in the Serial Monitor but neither client shows it as connected. Can you suggest what I might be doing wrong and/or do you have this project currently working against some other OPC client? Thank you.

[plasticrake]

The simple.ino example sketch should work. Are you able to run it?

[shootdaj]

I'm able to run it, but I cannot connect to it. In the serial monitor it says that it's connected (it outputs "New OPC Client: "), but the other side of the connection says it's not connected and I cannot get it to send messages.

[plasticrake]

It just says "New OPC Client: " and that's it? It doesn't print the IP address? What microcontroller are you using?

[shootdaj]

Sorry, the rest of the code got erased by markdown. It says the IP address after "New OPC Client: " . If on the other side I hit connect again, it says "New OPC Client: [ip address]" again. Once I get home in an hour, I can post a video/screenshot of the whole process.

[shootdaj]

Here are some more details about the issue:

1. Code that I'm running. I had to modify it because it was not compiling. More details are at Error when running simple.ino #3 . I've also removed my SSID and Key.

`//==============================================================================
// Simple Example
// * Replace <> and <> with your WiFi credientials
// * At startup the device will output it's IP and OPC Port to Serial.
// * Connect your OPC Client and send data. Received headers will be output to Serial.
//==============================================================================
#include "OpcServer.h"

#if defined(ESP8266)
#include <ESP8266WiFi.h>
#elif defined(PARTICLE)
#include "application.h"
#define WiFiServer TCPServer
#define WiFiClient TCPClient
#else
#include <SPI.h>
#include <WiFi101.h>
#endif

//==============================================================================
// Configuration
//==============================================================================
const char* WIFI_SSID = "";
const char WIFI_PASS = "*";

const int OPC_PORT = 81;
const int OPC_CHANNEL = 1; // Channel to respond to in addition to 0 (broadcast channel)
const int OPC_MAX_CLIENTS = 2; // Maxiumum Number of Simultaneous OPC Clients

// Size of OPC Read Buffer
// * Should probably size to number of pixels * 3 plus 4 byte header
// * If an OPC Message is received that is longer, the remaining pixels are discarded
// * If you are receiving OPC Messages that are longer than the number of pixels you may see increased
// performance by increasing the buffer size to hold the entire message
const int OPC_MAX_PIXELS = 6;
const int OPC_BUFFER_SIZE = OPC_MAX_PIXELS * 3 + OPC_HEADER_BYTES;
//------------------------------------------------------------------------------

// Callback when a full OPC Message has been received
void cbOpcMessage(uint8_t channel, uint8_t command, uint8_t length, uint8_t* data) {
Serial.print("chn:");
Serial.print(channel);
Serial.print("cmd:");
Serial.print(command);
Serial.print("len:");
Serial.println(length);
}

// Callback when a client is connected
void cbOpcClientConnected(WiFiClient& client) {
Serial.print("New OPC Client: ");
#if defined(ESP8266) || defined(PARTICLE)
Serial.println(client.remoteIP());
#else
Serial.println("(IP Unknown)");
#endif
}

// Callback when a client is disconnected
void cbOpcClientDisconnected(OpcClient& opcClient) {
Serial.print("Client Disconnected: ");
Serial.println(opcClient.ipAddress);
}

//==============================================================================
// OpcServer Init
//==============================================================================
WiFiServer server = WiFiServer(OPC_PORT);
OpcClient opcClients[OPC_MAX_CLIENTS];
uint8_t buffer[OPC_BUFFER_SIZE * OPC_MAX_CLIENTS];
OpcServer opcServer = OpcServer(server, OPC_CHANNEL, opcClients, OPC_MAX_CLIENTS, buffer, OPC_BUFFER_SIZE);
//------------------------------------------------------------------------------

void setup() {
Serial.begin(115200);

#if !defined(PARTICLE)
if (WiFi.SSID() != WIFI_SSID) {
WiFi.begin(WIFI_SSID, WIFI_PASS);
}
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
#endif

opcServer.setMsgReceivedCallback(cbOpcMessage);
opcServer.setClientConnectedCallback(cbOpcClientConnected);
opcServer.setClientDisconnectedCallback(cbOpcClientDisconnected);

opcServer.begin();

Serial.print("\nOPC Server: ");
Serial.print(WiFi.localIP());
Serial.print(":");
Serial.println(OPC_PORT);
}

void loop() {
opcServer.process();
delay(10);
}`

2. Here's a video of me running your code against my NodeMCU and then using Smart Websocket Client to try to connec to it: https://youtu.be/CPrHi0dnPzE

Can you tell me if I'm doing something wrong?