Muhamed Fauzi Bin Abbas wrote: > Hi, > > I checked and confirmed that I am using the tcp_write and tcp_sent. By > the way, I am using the socket API.
That doesn't make sense. tcp_write and tcp_sent are the lwIP raw API, not the socket API. If you do mean you are using the raw API and are calling tcp_write, then you should not call it with more than 64k data. Have a look at the start of do_writemore() in src/api/api_msg.c to see how the netconn API does it for example - it limits it to 64k at a time as the max size is constrained by a u16_t. > Anything else I can look at? Is > there a variable that sets a 64K buffer? In the core of lwIP, the write size is a 16-bit type, i.e. unavoidably limited to 64k. That doesn't mean you can't send more than 64k at all - just not in a single write. If using the raw API, you should not be trying to send more than the TCP send buffer space anyway (as returned by tcp_sndbuf(pcb)). Jifl -- eCosCentric Limited http://www.eCosCentric.com/ The eCos experts Barnwell House, Barnwell Drive, Cambridge, UK. Tel: +44 1223 245571 Registered in England and Wales: Reg No 4422071. ------["Si fractum non sit, noli id reficere"]------ Opinions==mine _______________________________________________ lwip-users mailing list [email protected] http://lists.nongnu.org/mailman/listinfo/lwip-users
