If building a server that does not support TCP, then the
get_server_ctx() is not needed and thus needs to be compiled out.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Explicitly note that while these functions return pointers to
headers, the headers themselves may be fragmented into different
data fragments. 1a2f24f920 is an example where this might have
been overlooked.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Don't use names like "strlen" for parameters. Try and name buffer
parameters consistently.
NOTE: For several functions I removed "const" flag. This is
intentional and will be needed in upcoming patches.
Signed-off-by: Michael Scott <michael.scott@linaro.org>
Remove some left over TODOs and also fix a TODO where we need to return
the appropriate error code to generate a 4.05 response.
Signed-off-by: Michael Scott <michael.scott@linaro.org>
This calculation reads the length portion of the COAP header to determine
the length of the coap packet. However, when encrypted via DTLS this
value seems to be getting corrupted. Let's change this calculation so
that it will work for when DTLS is both enabled and disabled. Use the
total length of the fragment data and substract back out the headers
to get a correct value.
Signed-off-by: Michael Scott <michael.scott@linaro.org>
When source address is unspecified then SAC is 1 and SAM is 00.
Uncompression does not process because context based compression
is not enabled.
Special case (SAC:1 and SAM:00) should be handled without context
based compression support.
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
Add system workqueue information prints to "net stacks" command.
This helps debugging when figuring out which stack is running out
of space.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Enhance existing "net app" command so that it can be
used to show information about multiple connections.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
If we get MAC verification error in handshake, it could be that
everything is fine but we ran out of heap memory in mbedtls.
In this happens, suggest the user to check amount of memory
in mbedtls as it might just fix the issue.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
As we select net_ctx, it is useful to see who actually called
the _net_app_select_net_ctx() when debugging the call flow.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Sometimes when sending network packet, the wrong net_context was
selected which prevented data to be sent.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
We should not close the TLS connection immediately if the TLS
data is not yet sent. So if user calls net_app_close() and we
still have data pending, then send the TLS data and only after
that close the connection.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
As there can be multiple listening network contexts, it should
be possible to close one of them.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The server is able to listen and serve multiple incoming
connections. This commit does not add support for multiple
incoming TLS connections.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The stack of rd client is exhausted while running lwm2m client w/ IPv6
and network log global enabled. Increase the stack size to 1536 when
NET_LOG_GLOBAL is enabled.
Detail described at #4424
Signed-off-by: Robert Chou <robert.ch.chou@acer.com>
".well-known/core" is mainly used with method GET for performing the
resource discovery (RFC 6690). Since we are implementing a LwM2M client
and is not implement a resource directory which allow others to do the
resource registration (POST to .well-known/core). Only GET method is
allowed for the usage. Report 4.5 (Method Not Allowed) if other methods
are requested.
Signed-off-by: Robert Chou <robert.ch.chou@acer.com>
Modify zoap_options_to_path() to return error when URI contains
character other than digits and return 4.04 NOT FOUND to caller.
PATH such as "/1a/2/3" was treated as "/1/2/3" after parsring
which is incorrect.
Signed-off-by: Robert Chou <robert.ch.chou@acer.com>
Return 4.05 Method Not Allowed when path is empty ('/') to the
caller for it's only use by bootstrap delete. This change also avoid the
empty path being treated as request targeted at 0/0/0.
Signed-off-by: Robert Chou <robert.ch.chou@acer.com>
1) Respond NOT FOUND to caller when object doesn't exist
2) Report as internal server error when OP not handled
Signed-off-by: Robert Chou <robert.ch.chou@acer.com>
Such option should be use carefully. Printing out in/out packets is
extremely verbose.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
If the pkt is corrupted and the offset would be larger than
the actual packet length, then print information about that and
drop the packet.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Applications may want to be notified when various events
happen in the LwM2M rd client. Let's implement an event
callback which sends: connect, disconnect and update events.
Signed-off-by: Michael Scott <michael.scott@linaro.org>
CoAP allows a proxy to be used when transferring data (CoAP-CoAP and/or
CoAP-HTTP) by creating request on a specific URI path and by using the
Proxy URI CoAP option. Create specific Kconfig options for the proxy
server address and port, until a parser gets implemented.
Code tested with Californium acting as CoAP proxy.
Signed-off-by: Ricardo Salveti <ricardo.salveti@linaro.org>
[michael.scott@linaro.org: rebased on net_app + lwm2m_message
refactoring + firmware update changes.]
Signed-off-by: Michael Scott <michael.scott@linaro.org>
During firmware download via block-wise transfer, we can see
packets occaionally get re-transmitted (normal logic in the
pending / retry functions). However, both of these packets
end up coming through the reply handler and we should ignore
any block-wise transfer that has a current value less than
where we expect to be.
NOTE: This fixes K64F ethernet transfers where we were getting
too many packets back in the handler.
Signed-off-by: Michael Scott <michael.scott@linaro.org>
UDP packets can be lost in heavy traffic. Normally we can handle this
with pending packet processing for packets which have not been responded
to with an ACK. However, due to the time it takes for firmware to
download via CoAP, an extra level of retries should be added.
The process works like this:
Normal pending packets will try to send 3 times fairly quickly.
If that fails, then the timeout callback is called for the firmware
download process. A retry counter is incremented and the timeout
callback perform a new packet send of the block-wise transfer
packet that is missing, until the retry counter hits a limit (3)
and then the transfer is aborted.
This allows for a longer "outage" to happen during firmware transfer
and the process can still succeed.
NOTE: This patch does not fix a current bug where the pending process
is not re-sending the packets correctly, it only makes the process
more stable with a better chance to work.
Signed-off-by: Michael Scott <michael.scott@linaro.org>
When a packet expires after the pending retries we call
lwm2m_release_message() to free up resources. This includes
cleanup of the pending structure which calls net_pkt_unref on
the pending packet. This would normally free up the packet
memory. However, earlier in the pending processing we add a ref
to the packet so that normal send processing doesn't free up
the memory. This meant we were leaking packet memory every
time we had an expiration due to timeout.
Let's do an unref prior to calling lwm2m_release_message() to
make sure the packet memory is freed correctly.
Signed-off-by: Michael Scott <michael.scott@linaro.org>
Previously, firmware support wasn't initializing the retransmit work
or the extra network packet pools. Let's fix that.
NOTE: While this fixes the setup of retransmit work, the actual
attempts to re-send packets which are pending is failing. Needs
another follow-up fix.
Signed-off-by: Michael Scott <michael.scott@linaro.org>
Create an internal function lwm2m_engine_context_init() which sets
the extra packet pools and initializes retransmit work internal to
the LwM2M engine.
This function will be used by firmware pull support which establishes
a new LwM2M context for downloading firmware.
Signed-off-by: Michael Scott <michael.scott@linaro.org>
In the case of a proxy server translating HTTP -> COAP (known in
the code as "separate reply"), we were leaking lwm2m_message structures.
This was due to pending objects being cleared out during the first ACK,
and no other way of finding a matching message when the follow up packet
was received. Let's add a second match for reply to make sure we can
find our matching message resources.
NOTE: This change renames find_msg_from_pending() to find_msg() and
makes it a static function as it's only used by the lwm2m_engine.
Signed-off-by: Michael Scott <michael.scott@linaro.org>
This is a useful message announcing that the RD client state machine
is starting for a particular connection. If the log level is set
low so that DBG messages are hidden, then this message goes away.
Signed-off-by: Michael Scott <michael.scott@linaro.org>
1. Add handling block1 option in handle_request(). The basic idea is
to declare structure block_context at compiled time and use "token"
as a key to pick up the on-going block cotext. It should be able to
support multiple blockwise transfer concurrently
2. Use write callback implemented in lwm2m_obj_firmware to deal w/ the
update state transition and than call the callback registered by the
application
3. move default_block_size to lwm2m_engine.c to share between
lwm2m_engine and lwm2m_obj_firmware_pull
Signed-off-by: Robert Chou <robert.ch.chou@acer.com>
[michael.scott@linaro.org: rebased on LwM2M net_app changes.]
Signed-off-by: Michael Scott <michael.scott@linaro.org>
OPAQUE resource type might/might not have data_ptr/data_len setup
depending on the implementation. This introduce an issue that when
OPAQUE resource is written from the server side, the ones w/ none
setup will not be able to get the data at post_write_cb()
Modify to setup data_ptr/data_len as incoming buffer and buffer size
Signed-off-by: Robert Chou <robert.ch.chou@acer.com>
1. Parse firmware pull URI
2. Add lwm2m_firmware_get/set_update_cb() for application to register
callback. This is because we want to check the update_state before
we pass to the application
3. Add lwm2m_firmware_get/set_update_result() and
lwm2m_firmware_get/set_update_stat() to manage the state transition
as well as the sanity check
Signed-off-by: Robert Chou <robert.ch.chou@acer.com>
[michael.scott@linaro.org: rebased on net_app framework and
lwm2m_message refactoring.]
Signed-off-by: Michael Scott <michael.scott@linaro.org>
With future patches we will need to parse URLs in the registration
client and firmware object. Enable it by default when LWM2M is
enabled.
Signed-off-by: Michael Scott <michael.scott@linaro.org>
If there is no connection to server, then _net_app_select_net_ctx()
will return NULL. This is perfectly fine and we can just continue.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Use the remote address to determine what address family to bind.
This prevents extra context to be created. In order to avoid
parsing the peer address string multiple times, the client
init function is re-factored.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Currently this is defined as a k_thread_stack_t pointer.
However this isn't correct, stacks are defined as arrays. Extern
references to k_thread_stack_t doesn't work properly as the compiler
treats it as a pointer to the stack array and not the array itself.
Declaring as an unsized array of k_thread_stack_t doesn't work
well either. The least amount of confusion is to leave out the
pointer/array status completely, use pointers for function prototypes,
and define K_THREAD_STACK_EXTERN() to properly create an extern
reference.
The definitions for all functions and struct that use
k_thread_stack_t need to be updated, but code that uses them should
be unchanged.
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
Some doxygen directives were missing from dns_pack.h file.
Also make function header documentation look better.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
