[lwip-users] Assertion "unsent_oversize mismatch (pcb vs. last_unsent)"

[Sandra Gilge]

Hallo,

 

I moved my project from v1.4.1 to GIT HEAD with another port (Analog Devices -> port from Stephane Lesage)

 

Now I’m getting at heavy load the following assertion:

Assertion "unsent_oversize mismatch (pcb vs. last_unsent)" failed at line 465 in .\src\core\tcp_out.c

 

I use following TCP settings:

#define LWIP_TCP                                                                                        1

#define LWIP_TCP_TIMESTAMPS                                                          0

#define TCP_WND                                                                                       (4 * 1024)//8192

#define TCP_MAXRTX                                                                                12

#define TCP_SYNMAXRTX                                                                        4

#define TCP_QUEUE_OOSEQ                                                                  1

#define TCP_MSS                                                                                         1460

#define TCP_SND_BUF                                                                              (4 * TCP_MSS)

#define TCP_SND_QUEUELEN                                                                 (64 * TCP_SND_BUF/TCP_MSS)

#define TCP_SNDLOWAT                                                                          (TCP_SND_BUF/8)

#define TCP_LISTEN_BACKLOG                                                              0

#define TCP_OVERSIZE                                                                              TCP_MSS

 

I’m using the sockets API

My Application: Kind of JPEG Streamer which sends out  JPEG images when receiveing correct HTTP Get (Implementation for JPEG Streamer with singleframe requests)

 

I didn’t have this error before moving to GIT head.

Anyone an idea?

 

Best regards,

Sandra