continue split proto and non-proto crates

Can succesfully do a WebRTC call on localhost.

Cargo.toml

@@ -1,5 +1,5 @@
 [workspace]
-members = ["librice", "librice-proto", "fuzz"]
+members = ["librice-proto", "librice", "fuzz"]
 default-members = ["librice", "librice-proto"]
 resolver = "2"
 
@@ -12,6 +12,7 @@ rust-version = "1.68.2"
 [workspace.dependencies]
 arbitrary = { version = "1", features = ["derive"] }
 byteorder = "1"
+get_if_addrs = "0.5"
 rand = "0.8"
 tracing = { version = "0.1", features = ["log"] }
 tracing-subscriber = { version = "0.3", features = ["std", "env-filter"] }

librice-proto/Cargo.toml

@@ -12,17 +12,32 @@ repository.workspace = true
 rust-version.workspace = true
 workspace = ".."
 
+[features]
+capi = ["libc", "socket2", "tracing-subscriber", "get_if_addrs"]
+
 [dependencies]
 arbitrary = { workspace = true, optional = true }
 byteorder.workspace = true
 crc = "3"
+get_if_addrs = { workspace = true, optional = true }
 hmac = "0.12"
 md-5 = "0.10"
 nom = "7"
 rand.workspace = true
 sha-1 = "0.10"
 sha2 = "0.10"
 tracing.workspace = true
+libc = { version = "0.2", optional = true }
+socket2 = { version = "0.5", optional = true }
+tracing-subscriber = { workspace = true, optional = true }
 
 [dev-dependencies]
 tracing-subscriber.workspace = true
+
+[package.metadata.capi]
+min_version = "0.9.21"
+
+[package.metadata.capi.library]
+name = "rice-proto"
+version_suffix_components = 1
+rustflags = "-Cpanic=abort"

librice-proto/cbindgen.toml

@@ -0,0 +1,24 @@
+header = "// SPDX-License-Identifier: MIT OR Apache-2.0"
+sys_includes = ["sys/socket.h"]
+include_guard = "LIBRICE_PROTO_H"
+tab_width = 4
+language = "C"
+cpp_compat = true
+usize_is_size_t = true
+
+[export]
+exclude = ["MAGIC_COOKIE", "BINDING", "RTP", "RTCP"]
+item_types = ["enums", "structs", "opaque", "functions"]
+
+[export.rename]
+#"sockaddr" = "struct sockaddr"
+#"sockaddr_storage" = "struct sockaddr_storage"
+"CandidateType" = "RiceCandidateType"
+"TransportType" = "RiceTransportType"
+"ComponentConnectionState" = "RiceComponentConnectionState"
+
+[fn]
+args = "vertical"
+
+[enum]
+rename_variants = "QualifiedScreamingSnakeCase"

librice-proto/check_meson_wraps.py

@@ -0,0 +1,41 @@
+#!/usr/bin/env python3
+
+import os, subprocess
+import pathlib, configparser
+
+def parse_cargo_tree_line(line):
+    components = line.split()
+    # FIXME doesn't support more than single digit depths
+    depth = int(components[0][0])
+    name = components[0][1:]
+    version = components[1][1:]
+    features = []
+    if len(components) > 2 and components[2][0] != '(':
+        features = components[2].split(',')
+    print(depth, name, version, features)
+    return (name, version, features)
+
+CRATES_URL_TEMPL = "https://crates.io/api/v1/crates/{name}/{version}/download"
+
+def main():
+    crates_features = subprocess.run(["cargo", "tree", "-f", "{p} {f}", "-p", "librice-proto", "-e", "normal", "--prefix", "depth"], capture_output=True, check=True, text=True).stdout
+    crates = {}
+    for line in crates_features.splitlines():
+        (name, version, features) = parse_cargo_tree_line(line)
+        if name != 'librice-proto':
+            if name in crates:
+                assert(crates[name] == (version, features))
+                continue
+            crates[name] = (version, features)
+            wrap_file = pathlib.Path('..') / 'librice-proto' / 'subprojects' / (name + '.wrap')
+            with wrap_file.open(mode="r") as f:
+                wrap = configparser.ConfigParser()
+                wrap.read_file(f)
+                name_version = name + '-' + version
+                assert(wrap["wrap-file"]["directory"] == name_version)
+                assert(wrap["wrap-file"]["source_url"] == CRATES_URL_TEMPL.format(name=name, version=version))
+                assert(wrap["wrap-file"]["source_filename"] == name_version + '.tar.gz')
+                assert(wrap["provide"]["dependency_names"] == name + '-rs')
+
+if __name__ == "__main__":
+    main()