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# vcl-ldpreload a LD_PRELOAD library that uses VCL library for data transport
libvcl_ldpreload.so library is to be used as a LD_PRELOAD library.
User can LD_PRELOAD any application that uses POSIX socket API.
This library internally uses libvppcom.so library from VPP project.
## HowTo
The library can be compiled by running the following commands from the vppsb/vcl-ldpreload/src directory:
If VPP is installed, then
```bash
libtoolize
aclocal
autoconf
automake
./configure
make
sudo make install
```
If VPP is not installed, but rather built in a separate directory, you can use the VPP_DIR 'configure' argument.
```bash
autoreconf -i -f
./configure VPP_DIR=<absolute/path/to/vpp>
make
sudo make install
```bash
Useful test script can be found in VPP project:
.../vpp/test/scripts/socket_test.sh
Running socket_test.sh without parameters will give the help menu.
## Administrative
### Current status
This library is currently under active enhancement.
### Objective
This effort intends to be a building block for a better integration of POSIX socket applications with VPP.
It will evolve depending on the needs of the VPP community while focusing on
LD_PRELOADing applications that use POSIX socket APIs.
### Main contributors
Shrinivasan Ganapathy - LF-ID:shganapa
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