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# opt.h File Reference

`#include "net/lwipopts.h"`

Go to the source code of this file.

## Defines
#define | ICMP_TTL 255
#define | LWIP_TCP 1
#define | LWIP_UDP 1
#define | MEM_ALIGNMENT 1
#define | PBUF_LINK_HLEN 0
#define | PBUF_POOL_BUFSIZE 128
#define | PBUF_POOL_SIZE 16
#define | TCP_MAXRTX 12
#define | TCP_MSS 128
#define | TCP_SYNMAXRTX 6
#define | TCP_TTL 255
#define | TCP_WND 2048
#define | UDP_TTL 255

## Define Documentation

#define ICMP_TTL 255

Definition at line 43 of file opt.h.

#define LWIP_TCP 1

Definition at line 91 of file opt.h.

#define LWIP_UDP 1

Definition at line 87 of file opt.h.

#define MEM_ALIGNMENT 1

Definition at line 71 of file opt.h.

#define PBUF_LINK_HLEN 0

Definition at line 83 of file opt.h.

#define PBUF_POOL_BUFSIZE 128

Definition at line 79 of file opt.h.

#define PBUF_POOL_SIZE 16

Definition at line 75 of file opt.h.

#define TCP_MAXRTX 12

Definition at line 63 of file opt.h.

#define TCP_MSS 128

Definition at line 55 of file opt.h.

#define TCP_SYNMAXRTX 6

Definition at line 67 of file opt.h.

#define TCP_TTL 255

Definition at line 51 of file opt.h.

#define TCP_WND 2048

Definition at line 59 of file opt.h.

#define UDP_TTL 255

Definition at line 47 of file opt.h.