Introduce a new configuration define SNTP_COMP_ROUNDTRIP to compensate
for network round-trip delays when setting the system clock from SNTP.
Note that this feature requires compiler support for 64-bit arithmetic.
Avoid piecemeal invocation of pbuf_copy_partial() for each SNTP header
field. The new code may sometimes copy more than necessary, but the
complexity is reduced.
Generalize the NTP timestamp conversion arithmetic, and provide hooks
for using native NTP timestamps when setting or getting the system
clock time. Convert microseconds to a fraction as needed when getting
the system time.
In unit test if_fail check for nullptr
is always located after dereferencing this
null pointer. This patch introduces correct
order: first check, then use
altcp is an abstraction layer that prevents applications linking against the
tcp.h functions but provides the same functionality. It is used to e.g. add
SSL/TLS or proxy-connect support to an application written for the tcp callback
API without that application knowing the protocol details.
Applications written against the altcp API are directly linked against the
tcp callback API for LWIP_ALTCP==0, but then cannot use layered protocols.
This code is marked as dead when BUF_SZ is a multiple of 4 (current
situation with unit tests)
This hopefully fixes a -Wunreachable-code failure found by Travis CI
This migrates the sendmsg TCP test from socket examples (task #14408)
to socket unit tests
Additionally, this adds support for testing recvmsg, creating a TCP
test for both sendmsg/recvmsg (referred to as msgapi test)
This also makes a small change to msgapi UDP to clear the receive
buffer after verifying the previous datagram
Using {0} broke Travis CI even though this should be correct for
initializing struct msghdr (see example in Linxu man pages:
http://man7.org/linux/man-pages/man3/cmsg.3.html)
Just use memset for now which is the common approach in LwIP codebase
This converts the sendmsg test to use recvmsg for receiving, thus
exercising both sendmsg and recvmsg in a single test
This also adjusts the test naming to communicate all message APIs
(sendmsg/recvmsg) are being tested
