[lwip-devel] [bug #36153] TCP Cheksum error if LWIP_CHECKSUM_ON_COPY=1

[Alexander]

Follow-up Comment #7, bug #36153 (project lwip):

OK. through the debug I found that bug reproducing
depending on TCP_SND_BUF option.
total len of data is 4337 but my TCP_SND_BUF is 4096
if I set TCP_SND_BUF to 5120 (slightly more than 4337) error does not occur
(what is your TCP_SND_BUF opt on win32?). 

//all my TCP options 
#define LWIP_TCP                 1
#define TCP_SND_BUF              (1024*4)
#define MEMP_NUM_TCP_SEG         16
#define TCP_SND_QUEUELEN         16
#define TCP_MSS                  1460


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