Commit 2fc554b8 authored by Michael Scott's avatar Michael Scott Committed by Anas Nashif
Browse files

crypto: config: config-coap: add CONFIG for setting max content length 



The CoAP samples use an MBEDTLS config "config-coap.h" which could be
re-used by the LwM2M sample, except that most servers use a larger
maximum content length setting of 1500 bytes.

Let's add a CONFIG to set this for users of the CoAP lib and set the
CONFIG value for the samples to the 256 size currently used.

Signed-off-by: default avatarMichael Scott <michael@opensourcefoundries.com>
parent 1d3c1150

ext/lib/crypto/mbedtls/configs/config-coap.h

+5 −1
Original line number Diff line number Diff line
@@ -95,7 +95,11 @@ 
 * both ends of the connection!  (See comments in "mbedtls/ssl.h".)

 * The optimal size here depends on the typical size of records.

 */

#define MBEDTLS_SSL_MAX_CONTENT_LEN             256

#ifndef CONFIG_COAP_MBEDTLS_SSL_MAX_CONTENT_LEN

#define MBEDTLS_SSL_MAX_CONTENT_LEN	1500

#else

#define MBEDTLS_SSL_MAX_CONTENT_LEN	CONFIG_COAP_MBEDTLS_SSL_MAX_CONTENT_LEN

#endif



#include "mbedtls/check_config.h"

samples/net/coaps_client/prj.conf

+1 −0
Original line number Diff line number Diff line
@@ -21,6 +21,7 @@ CONFIG_MBEDTLS_BUILTIN=y 
CONFIG_MBEDTLS_CFG_FILE="config-coap.h"



CONFIG_COAP=y

CONFIG_COAP_MBEDTLS_SSL_MAX_CONTENT_LEN=256



CONFIG_NET_APP_SETTINGS=y

CONFIG_NET_APP_MY_IPV6_ADDR="2001:db8::3"

samples/net/coaps_server/prj.conf

+1 −0
Original line number Diff line number Diff line
@@ -17,6 +17,7 @@ CONFIG_NET_IF_MCAST_IPV6_ADDR_COUNT=5 
CONFIG_NET_MAX_CONTEXTS=10



CONFIG_COAP=y

CONFIG_COAP_MBEDTLS_SSL_MAX_CONTENT_LEN=256



CONFIG_MBEDTLS=y

CONFIG_MBEDTLS_BUILTIN=y

subsys/net/lib/coap/Kconfig

+10 −0
Original line number Diff line number Diff line
@@ -62,6 +62,16 @@ config COAP_EXTENDED_OPTIONS_LEN_VALUE 
	  COAP_EXTENDED_OPTIONS_LEN is enabled. Define the value according to

	  user requirement.



config COAP_MBEDTLS_SSL_MAX_CONTENT_LEN

	int "CoAP MBEDTLS maximum content length value"

	default 1500

	range 256 16384

	depends on MBEDTLS

	help

	  This option sets the value of the MBEDTLS_SSL_MAX_CONTENT_LEN option

	  in ext/lib/crypto/mbedtls/configs/config-coap.h  For client/server

	  communication to work these values need to be the same on both sides.



config NET_DEBUG_COAP

	bool "Debug COAP"

	default n

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