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								# Asio UDP echo server example
 
							 
						 
					
						
							
								
									
										
										
										
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								Simple Asio UDP echo server using WiFi STA or Ethernet.
							 
						 
					
						
							
								
									
										
										
										
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								## Example workflow
 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
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								-  Wi-Fi or Ethernet connection is established, and IP address is obtained.
							 
						 
					
						
							
								
									
										
										
										
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								-  Asio UDP server is started on port number defined through the project configuration
							 
						 
					
						
							
								
									
										
										
										
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								-  Server receives and echoes back messages transmitted from client
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								## Running the example
 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
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								-  Open the project configuration menu (`idf.py menuconfig` ) to configure Wi-Fi or Ethernet. See "Establishing Wi-Fi or Ethernet Connection" section in [examples/protocols/README.md ](../../README.md ) for more details.
							 
						 
					
						
							
								
									
										
										
										
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								-  Set server port number in menuconfig, "Example configuration".
							 
						 
					
						
							
								
									
										
										
										
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								-  Run `idf.py -p PORT flash monitor`  to build and upload the example to your board and connect to it's serial terminal.
							 
						 
					
						
							
								
									
										
										
										
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								-  Wait for the board to connect to WiFi or Ethernet (note the IP address).
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								-  You can now send a UDP message and check it is repeated, for example using netcat `nc -u IP PORT` .
							 
						 
					
						
							
								
									
										
										
										
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								See the README.md file in the upper level 'examples' directory for more information about examples.