ot::Coap::Message::AppendOptionFromMessage() method

Appends a CoAP option reading Option value from another or potentially the same message.

Syntax

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Summary

Declaration

Definition

from coap_message.hpp:390

Error AppendOptionFromMessage(uint16_t aNumber, uint16_t aLength, const Message &aMessage, uint16_t aOffset);

Implemented in coap_message.cpp:186

Arguments

Argument

Description

aNumber

The CoAP Option number.

aLength

The CoAP Option length.

aMessage

The message to read the CoAP Option value from (it can be the same as the current message).

aOffset

The offset in @p aMessage to start reading the CoAP Option value from (@p aLength bytes are used as Option value).

Return value

kErrorNone Successfully appended the option. kErrorInvalidArgs The option type is not equal or greater than the last option type. kErrorNoBufs The option length exceeds the buffer size. kErrorParse Not enough bytes in @p aMessage to read @p aLength bytes from @p aOffset.