Laravel+gatewayworker completes the im instant messaging and file transfer functions (Chapter 4: server debugging errors)

Function introduction

This topic will lead you to build Imitation A letter Of Instant messaging And complete the mutual transmission of documents

Application scenarios

Practical application scenarios of this topic ：

1. Chat customer service ： Instant messaging , Messages are transmitted to each other in real time , Send text to each other 、 Voice messages and files ;
2. Small scale online auction ;
3. Video live barrage ;
4. The Internet of things ;
5. And other functions related to real-time messages ;

Special sections

1. Server configuration
2. Explanation of business logic
3. Back end instant messaging code development and configuration item explanation
4. Server debugging error
5. Front and back end code development
6. Function display

Chapter four ： Server debugging error

One 、 Run on the server terminal GatewayWorker Of PHP Start the command to debug the error

Let's start by visiting the previously defined IM The test page "indexA.blade.php", Please enter... In the browser address bar http://im.liutong.pro/im/indexA Visit ;

• Debugging error :
  
• Open the terminal to link to your server and use cd Command to enter the "/www/wwwroot/im.liutong.pro/app/GatewayWorker" Directory ( Here you see the official Demo Medium GatewayWorker You can just... Where the folder is cd Go there !)
• 
• Execute the start service name command according to the manual , Manual address ( Start and stop ):https://www.workerman.net/doc/gateway-worker/start-and-stop.html
  Use php start.php start Command startup service

• An error is found after executing the startup command , The error attribute is php Some dangerous functions are performed by default , We need to manually disable these functions , This process requires removing many disabled functions , I attach the form below , I don't want to take screenshots here ;
  

Function name
pcntl_signal()
pcntl_fork()
pcntl_wait()
pcntl_signal_dispatch()
pcntl_alarm()

• How to release php Functions of disable
  

• We deleted the disabled in the above list 5 After functions , Again using php start.php start Command you will get the following results ;

This indicates that the service has been started successfully , Now go back to the front page to refresh and you will get the results , This marks your websocket The link has been successful ;

If your code still reports an error or the terminal fails to start successfully , Please check the server nginx A firewall , For the convenience of demonstration, I will nginx The firewall is off ;

Be careful : If you modify php Of GatewayWorker Remember to enter the code again Project root /app/GatewayWorker Use command php start.php start Restart the service , Otherwise, the newly modified code will not take effect !

Last chapter ：《3. Back end instant messaging code development and configuration item explanation 》

Next chapter ：《5. Front and back end code development 》