This commit refactors startServer to use getaddrinfo() to
prepare the socket creation. Doing so, it also adds support for
IPv6 by using AF_UNSPEC as the address family.
This commits uses getaddrinfo(3) when connecting as client to the
rfsimulator. This enables name lookups, through DNS or a hosts file.
This change makes it easier to use the simulator in a dynamic
environment like Docker or Kubernetes by only targeting the name of
the container or service.
It is very possible that the operating system returns a file
descriptor bigger than the size of bridge->buf (MAX_FD_RFSIMU, which
is 250 as of now). As a minimum, let's fail if the socket file
descriptor is out of bounds.
A proper solution may be implemented later, if needed.
The actual propagation delay should not be smaller than the one specified.
A too short propagation delay might result in too early reception of Msg1, and with that in a mis-detection of the RAPID.
Add the option `--rfsimulator.prop_delay` to specify the simulated receive-path (gNB: UL, UE: DL) propagation delay in ms.
This option can be used e.g. to simulate a simple GEO satellite channel by specifying `--rfsimulator.prop_delay 238.74` to both, the gNB and the UE.
This is part of the work developed by Fraunhofer IIS within the ESA-funded project 5G-GOA (https://connectivity.esa.int/projects/5ggoa).
Reset all the circular buffer to zero; this ensures that we cannot read
uninitialized data. Since this is RFsimulator, performance is not a
problem here either (and zeroing out happens only once).
Use the correct function in order to close open RFsim connections,
instead of a simple close(). If this is not done correctly, it might
happen that the softmodem closes, but an L1 thread might still read
samples (bug in higher layers). Then, RFsim tries to read a socket
(because it has an open connection), but the actual connection had been
close()d. This commit fixes this behavior.
- deleted: ../../../executables/rfsim.c
- removed unused command line options to set SINR and SNR
- removed unused functions to get SINR and SNR
- removed unused RFSIM struct members
We set the RFsim TCP socket to non-blocking. Thus, it may happen that we
cannot write() to the socket when the kernel cannot handle the request,
in which case we wait some time before trying again. This is the
correct/expected behavior.
Since this is *normal*, an error message is not justified; we did not
even print a message in this case before commit 21790f9c4f introduced it.
This improves the RFsimulator code to reach a ~40% E2E throughput
improvement (depending on the machines).
Changes:
- reduce ring buffer size
- code cleanup for readability
- set TCP kernel parameters
- Add oai header to typescript and html sources, add support to commands
requiring two parameters, add more helpfiles
- Fix help bug (html comments not removed from tooltips)
- Fix backend build problem and 2 warnings
- Correctly initialize variables in nr_phy_scope.c
- Use add_subdirectory for websrv cmake build
- correctly link to asn1_lte_rrc and asn1_nr_rrc
- fix bug: correctly recognize npm packet
- only configure targets if explicitly asked for by users
- use add_subdirectory
- Use add_subdirectory for telnet cmake build
- Minor cleanup in build_oai
- Move softscope build in dedicated CMakeLists, and comment out
DEBUG_MAC_INTERFACE option (not found in code)
- Make DEBUG_ASN1 a cmake only option ( no C macro) as it's not used as
a C macro in the code, and develop align
Robert Schmidt