Files
openairinterface5g/common/utils/T/DOC/T/replay.md
T
Robert Schmidt 8107939f08 Change OAI license to CSSL v1.0 (and others)
- all RAN code, CI code, configuration files, dockerfiles, in CSSL v1.0
- all deployment code (openshift, charts, ancillary files like shell
  scripts), in MIT
- documentation in CC-BY-4.0
- exceptions might apply and are listed in NOTICE
- there is a new LICENSES folder with all licenses
- CONTRIBUTIONS.md has been updated accordingly

For automated changes based on OAI PL v1.1:

    perl -i~ -0pe 's/\/\*.*Licensed to the OpenAirInterface.*openairinterface.org\n#?/\/*\n * SPDX-License-Identifier: LicenseRef-CSSL-1.0\n/s' **/*.{c,h,cpp}
    perl -i~ -0pe 's/\/\*.*Licensed to the OpenAirInterface.*openairinterface.org\n#?/\/*\n * SPDX-License-Identifier: LicenseRef-CSSL-1.0\n/s' **/*.ts
    perl -i~ -0pe 's/<!--.*Licensed to the OpenAirInterface.*openairinterface.org\n.*-->/<!-- SPDX-License-Identifier: LicenseRef-CSSL-1.0 -->/s' **/*.xml

The rest (cmake, files with missing license, cmake) manually.
2026-03-27 16:36:37 +01:00

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Markdown

<!-- SPDX-License-Identifier: CC-BY-4.0 -->
# Replay
First, read the [basic usage](./basic.md) to compile things.
Then, read [record](./record.md) to know how to record a trace.
To replay, you use the `replay` program. It will act
as a *tracee* (`lte-softmodem`, `nr-softmodem`, etc.).
Then you use your usual tracer, eg. `enb` or `textlog`.
Since the T is constantly evolving you may need to extract
`T_messages.txt` contained in a trace to be able to process
the trace.
## Example
Download [example.raw](./example.raw). This example contains:
* MAC PDUs as sent and received by the eNodeB
* RRC info messages the eNodeB produced.
First step is to extract `T_messages.txt` from this trace.
```shell
./extract_config -i example.raw > extracted_T_messages.txt
```
Then you use `replay` to act as a regular *tracee*:
```shell
./replay -i example.raw
```
And then, while `replay` is still running, you use the tracer
you want, for example the `textlog` tracer:
```shell
./textlog -d extracted_T_messages.txt -no-gui -ON -full
```