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FreeRTOS+TCP is still in the lab
FreeRTOS+TCP is already used in commercial products and we encourage you to try it yourself. Be aware however that we are still refining its design, and the source code and documentation do not yet meet Real Time Engineers Ltd's strict quality standards.
Please use the forum for support, feedback and ideas, or contact us directly if you have a specific business interest.


DNS stands for Domain Name System, which is a form of domain name resolution.

DNS maps static and easily human readable textual (rather than numerical) names to IP addresses. A domain name server resolves the text domain name to the appropriate IP address. For example, entering "ping www.freertos.org" in the command console of a desktop computer will show a ping request being sent to the IP address (at the time of writing - the IP address may change) because a DNS server resolved the string "www.freertos.org" to the IP address

If ipconfigUSE_DNS is set to 1 in FreeRTOSIPConfig.h then the FreeRTOS+TCP API function FreeRTOS_gethostbyname() can be used to resolve a text name to an IP address.

Like the IP address of the node running FreeRTOS+TCP, the IP address of a domain name server can be configured either statically as a parameter to FreeRTOS_IPInit(), or dynamically from a DHCP server.

Useful links:

Other networking basics pages:

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