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## AWS C Event Stream
C99 implementation of the vnd.amazon.event-stream content-type.
## License
This library is licensed under the Apache 2.0 License.
## Usage
### Building
#### Building s2n (Linux Only)
If you are building on Linux, you will need to build s2n before being able to build aws-c-io. For our CRT's, we build s2n at a specific commit, and recommend doing the same when using it with this library. That commit hash can be found [here](https://github.com/awslabs/aws-crt-cpp/tree/main/crt). The commands below will build s2n using OpenSSL 1.1.1. For using other versions of OpenSSL, there is additional information in the [s2n Usage Guide](https://github.com/awslabs/s2n/blob/main/docs/USAGE-GUIDE.md).
```
git clone git@github.com:awslabs/s2n.git
cd s2n
git checkout <s2n-commit-hash-used-by-aws-crt-cpp>
# We keep the build artifacts in the -build directory
cd libcrypto-build
# Download the latest version of OpenSSL
curl -LO https://www.openssl.org/source/openssl-1.1.1-latest.tar.gz
tar -xzvf openssl-1.1.1-latest.tar.gz
# Build openssl libcrypto. Note that the install path specified here must be absolute.
cd `tar ztf openssl-1.1.1-latest.tar.gz | head -n1 | cut -f1 -d/`
./config -fPIC no-shared \
no-md2 no-rc5 no-rfc3779 no-sctp no-ssl-trace no-zlib \
no-hw no-mdc2 no-seed no-idea enable-ec_nistp_64_gcc_128 no-camellia\
no-bf no-ripemd no-dsa no-ssl2 no-ssl3 no-capieng \
-DSSL_FORBID_ENULL -DOPENSSL_NO_DTLS1 -DOPENSSL_NO_HEARTBEATS \
--prefix=<absolute-install-path>
make
make install
# Build s2n
cd ../../../
cmake -DCMAKE_PREFIX_PATH=<install-path> -DCMAKE_INSTALL_PREFIX=<install-path> -S s2n -B s2n/build
cmake --build s2n/build --target install
```
#### Building aws-c-event-stream and Remaining Dependencies
Note that aws-c-event-stream has several dependencies:
```
git clone git@github.com:awslabs/aws-c-common.git
cmake -DCMAKE_PREFIX_PATH=<install-path> -DCMAKE_INSTALL_PREFIX=<install-path> -S aws-c-common -B aws-c-common/build
cmake --build aws-c-common/build --target install
git clone git@github.com:awslabs/aws-checksums.git
cmake -DCMAKE_PREFIX_PATH=<install-path> -DCMAKE_INSTALL_PREFIX=<install-path> -S aws-checksums -B aws-checksums/build
cmake --build aws-checksums/build --target install
git clone git@github.com:awslabs/aws-c-cal.git
cmake -DCMAKE_PREFIX_PATH=<install-path> -DCMAKE_INSTALL_PREFIX=<install-path> -S aws-c-cal -B aws-c-cal/build
cmake --build aws-c-cal/build --target install
git clone git@github.com:awslabs/aws-c-io.git
cmake -DCMAKE_PREFIX_PATH=<install-path> -DCMAKE_INSTALL_PREFIX=<install-path> -S aws-c-io -B aws-c-io/build
cmake --build aws-c-io/build --target install
git clone git@github.com:awslabs/aws-c-event-stream.git
cmake -DCMAKE_PREFIX_PATH=<install-path> -DCMAKE_INSTALL_PREFIX=<install-path> -S aws-c-event-stream -B aws-c-event-stream/build
cmake --build aws-c-event-stream/build --target install
```
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