SourceVuESP-IDF Framework and ExampleslwIPlwip_setgetsockopt_data

lwip_setgetsockopt_data struct

This struct is used to pass data to the set/getsockopt_impl functions running in tcpip_thread context (only a void* is allowed)

Syntax

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Summary

Declaration

from sockets_priv.h:104

struct lwip_setgetsockopt_data { int s; int level; int optname; #if LWIP_MPU_COMPATIBLE u8_t optval[LWIP_SETGETSOCKOPT_MAXOPTLEN]; #else union { void *p; const void *pc; } optval; #endif socklen_t optlen; int err; void* completed_sem; };

Fields

Field

Declared as

Description

lwip_setgetsockopt_data::s

int

socket index for which to change options.

lwip_setgetsockopt_data::level

int

level of the option to process.

lwip_setgetsockopt_data::optname

int

name of the option to process.

lwip_setgetsockopt_data::optval

union { void *p; const void *pc; }

lwip_setgetsockopt_data::optlen

socklen_t

size of *optval.

lwip_setgetsockopt_data::err

int

if an error occurs, it is temporarily stored here.

lwip_setgetsockopt_data::completed_sem

void*

semaphore to wake up the calling task.

References

from examples

lwip_setgetsockopt_data struct

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