Adding upstream version 110.0.1.upstream/110.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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+# webrtc-sdp
+
+[![Crates.io](https://img.shields.io/crates/v/webrtc-sdp.svg)](https://crates.io/crates/webrtc-sdp)
+[![Build Status](https://travis-ci.org/mozilla/webrtc-sdp.svg?branch=master)](https://travis-ci.org/mozilla/webrtc-sdp)
+[![Codecov coverage status](https://codecov.io/gh/mozilla/webrtc-sdp/branch/master/graph/badge.svg)](https://codecov.io/gh/webrtc-sdp/webrtc-sdp)
+[![License: MPL 2.0](https://img.shields.io/badge/License-MPL%202.0-brightgreen.svg)](#License)
+[![dependency status](https://deps.rs/repo/github/mozilla/webrtc-sdp/status.svg)](https://deps.rs/repo/github/mozilla/webrtc-sdp)
+
+A SDP parser written in Rust specifically aimed to handle WebRTC SDP offers and answers.
+
+## Dependecies
+
+* Rust >= 1.45.0
+* log module
+* serde module
+* serde-derive module
+
+Cargo installs the missing modules automatically when building webrtc-sdp for the first time.
+
+## The webrtc-sdp API
+
+The main function is:
+```rust
+fn parse_sdp(sdp: &str, fail_on_warning: bool) -> Result<SdpSession, SdpParserError>
+```
+The `sdp` parameter is the string which will get parsed. The `fail_on_warning` parameter determines how to treat warnings encountered during parsing. Any problems encountered during are stored until the whole string has been parsed. Any problem during parsing falls into two catgeories:
+
+* Fatal error preventing further parsing or processing of the SDP
+* Warning which don't block further processing of the SDP
+
+Warnings will be for example unknown parameters in attributes. Setting `fail_on_warning` to `true` makes most sense during development, when you want to be aware of all potential problems. In production `fail_on_warning` is expected to be `false`.
+
+`parse_sdp()` returns either an `SdpSession` struct ([code](https://github.com/mozilla/webrtc-sdp/blob/master/src/lib.rs#L137)) which contains all the parsed information. Or in case a fatal error was encountered (or if `fail_on_warning` was set to `true` and any warnings were encountered) an `SdpParserError` ([code](https://github.com/mozilla/webrtc-sdp/blob/master/src/error.rs#L117)) will be returned as a `Result`.
+
+## Examples
+
+The [file parser](https://github.com/mozilla/webrtc-sdp/blob/master/examples/file_parser.rs) in the webrtc-sdp package gives you an easy example of how to invoke the webrtc-sdp parser.
+
+## Contributing
+
+As the Travis CI runs are checking for code formating and clippy warnings please run the following commands locally, before submitting a Pull Request.
+
+If you haven't clippy and Rust format installed already you add them like this:
+```
+rustup component add rustfmt-preview
+rustup component add clippy
+```
+
+Check with clippy for warnings in the code:
+```
+cargo clippy
+```
+
+And format all of the code according to Rust code style convention:
+```
+cargo fmt --all
+```
+
+## Fuzzing
+
+Install cargo-fuzz like this:
+```
+cargo install cargo-fuzz
+```
+
+With rust nightly you can start fuzzing like this:
+```
+cargo fuzz run fuzz_target_parse_sdp
+```
+
+## License
+
+Licensed under [MPL-2.0](https://www.mozilla.org/MPL/2.0/)