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Ultracompact TCP/IP protocol stack (advanced version) [M3S-T3-Tiny]
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Library functions
| Function name | Description |
| tcp_acp_cep | Waits for connection request (passive open) |
| tcp_con_cep | Requests connection (active open) |
| tcp_sht_cep | Completes transmission |
| tcp_cls_cep | Closes communication endpoint node |
| tcp_snd_cep | Transmits data |
| tcp_rcv_dat | Receives data |
| tcpudp_get_ramsize | Gets work memory usage size |
| _process_tcpip | Processes cyclic startup TCP/IP protocol |
| tcpudp_open | Opens T3 library |
| tcpudp_close | Closes T3 library |
Outline library specifications
Protocol | Item | Specification |
| TCP | API | Compliant with ITRON TCP/IP API specification |
| Nonblocking call | Supported | |
| Callback function | Supported | |
| Queuing | Not supported | |
| Number of TCP communication endpoints | Changeable by configuration | |
Maximum size | TCP data segment length (data length): 1,480 (1,460) bytes | |
TCP header option | MSS only supported Reception: Header options other than MSS ignored Transmission: Header options other than MSS unaccepted | |
| UDP | API | Compliant with ITRON TCP/IP API specification |
| Nonblocking call | Supported | |
| Callback function | Supported | |
| Queuing | Not supported | |
| Number of UDP communication endpoints | Changeable by configuration | |
| Maximum size | UDP data segment length (data length): 1,480 (1,472) bytes | |
| IP | Version | IPv4 (version 4) only |
| Fragment | Unsupported Reception: Fragmented datagrams discarded Transmission: Fragmentation of datagrams unaccepted | |
| Header option | Unsupported Reception: Datagrams that include header options discarded Transmission: Header options unaccepted | |
| Maximum size | IP datagram length (data length): 1,500 (1,480) bytes | |
| ICMP | Message type | Echo response only supported Reception: Echo request only, with other messages discarded Transmission: Echo response only |
| ARP | Cache entry | User-defined |
| Cache retention period | Approx. 10 minutes | |
| PPP | Server/client | Client function only supported Server function unsupported |
| Maximum size | IP datagram length (data length): 1,504 (1,500) bytes | |
| Authentication method | PAP | |
| Compression option | Compression option unsupported Setup requests for protocol field compression, address and control field compression and TCP/IP header compression rejected |
*The maximum sizes of TCP, UDP, IP and that of PPP depend on the transmit/receive buffer sizes of the driver.
