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TCP/IP Networking Components

OPENRTOS+TCP is a scalable, open source and thread safe TCP/IP stack. It provides a familiar, standards based, Berkeley sockets interface, making it as simple to use and as quick to learn as possible. An alternative callback interface is also available for advanced users.

OPENRTOS+TCP's features and RAM footprint are fully scalable, making OPENRTOS+TCP equally applicable to smaller, lower throughput microcontrollers as larger, higher throughput microprocessors. It is available with a light weight HTTPS web server, please ask one of our sales representatives for more details.

See the OPENRTOS+TCP users manual to the right for full documentation and API reference guide.

Features
Berkeley sockets API
Optionally supports TCP sliding windows
Fully re-entrant and thread safe API
Includes ARP, DHCP, DNS, LLMNR, NBNS
Gratuitous ARPs
Static, DHCP and Auto-IP address assignment
Can also be used as a UDP only stack
Optionally callback interface
Optionally fragment outgoing packets
Berkeley Sockets API
_socket()
_setsockopt()
_bind()
_listen()
_connect()
_accept()
_send() / _sendto()
_recv() / _recvfrom()
etc.

Code Size (example generated with GCC for ARM Cortex-M)
FileWith -O1 OptimisationWith -Os Optimisation
_DHCP.c1.9K1.3K
_DNS.c3.5K2.0K
_Sockets.c6.6K4.9K
_Stream_Buffer.c0.3K0.3K
_IP.c3.5K2.6K
_ARP.c8.4K1.2K
_UDP_IP.c0.7K0.5K
_TCP_IP.c7.0K4.8K
_TCP_WIN.c2.2K1.7K
BufferAllocation_1.c0.8K0.8K
Worst case with everything enabled34.9K20.1K

OPENRTOS+TCP provides a commercial license for the FreeRTOS+TCP  networking stack.

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