CC3100 mDNS

Overview

This sample application demonstrates how to register mDNS services, multicast them on mDNS port and try to get the IP, port and text of another service.

Note: This wiki page is only applicable for CC3100-SDK v1.0.0 and upward releases. For documentation on older SDKs' examples, refer corresponding file in <cc3100-sdk-installation-location>\cc3100-sdk\docs\examples\

Application details and Usage

This application registers and multicast three services at mDNS port. It also tries to get the IP, port and text of a service multicast-ed by another device

• Connect the board to a Windows-PC and configure the terminal-program for seeing the logs - CC3100 & CC3200 Terminal Setting has detailed instructions for configuring the terminal-program
• Multicast service parameters can be changed by changing below macros in main.c:

   #define MDNS_SERVICE_1        "cc3100-service-1._ipp._tcp.local"
   #define MDNS_SERVICE_2        "cc3100-service-2._ftp._tcp.local"
   #define MDNS_SERVICE_3        "cc3100-service-3._ipp._udp.local"

   #define MDNS_TEXT_1            "dev=CC3100"
   #define MDNS_TEXT_2            "dev=CC31xx"
   #define MDNS_TEXT_3            "vendor=texas instruments"

• Service to be 'listened-for' can be changed by modifying below macro in main.c:

   #define DNS_SD_SERVICE        "service-4._ipp._tcp.local"

• Edit following parameters in sl_common.h to establish connection w/ an AP:

   #define SSID_NAME       "<ap_name>"
   #define SEC_TYPE        SL_SEC_TYPE_OPEN
   #define PASSKEY         ""

• Build and run the application
• See the self explanatory logs on the terminal-program's console. On success, below message will be displayed on the terminal

• These services can be discovered w/ any service-discovery application:

Note: : This mDNS sample application registers services as 'unique services'. .i.e. if a service w/ the same name is already registered in the n/w, the new service registration will fail.

Source Files briefly explained

i. main - Initializes the device, connects to an AP, registers three services for multicast and tries to get IP, port and text of the service by name.

Limitations/Known Issues

• Trying to get a service multicast by the same board is not a valid use-case and is not supported

Links

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