diff --git a/tonic-examples/src/helloworld/client.rs b/tonic-examples/src/helloworld/client.rs
index 661f8a5..8165819 100644
--- a/tonic-examples/src/helloworld/client.rs
+++ b/tonic-examples/src/helloworld/client.rs
@@ -1,4 +1,4 @@
-use tonic::transport::Client;
+use tonic::transport::Channel;
 
 pub mod hello_world {
     include!(concat!(env!("OUT_DIR"), "/helloworld.rs"));
@@ -9,7 +9,7 @@ pub mod hello_world {
 async fn main() -> Result<(), Box<dyn std::error::Error>> {
     let origin = http::Uri::from_static("http://[::1]:50051");
 
-    let svc = Client::builder().build(origin)?;
+    let svc = Channel::builder().build(origin)?;
 
     let mut client = hello_world::GreeterClient::new(svc);
 
diff --git a/tonic-examples/src/routeguide/client.rs b/tonic-examples/src/routeguide/client.rs
index 8f846f7..725cbee 100644
--- a/tonic-examples/src/routeguide/client.rs
+++ b/tonic-examples/src/routeguide/client.rs
@@ -2,7 +2,7 @@ use futures::TryStreamExt;
 use route_guide::{Point, RouteNote};
 use std::time::{Duration, Instant};
 use tokio::timer::Interval;
-use tonic::{transport::Client, Request};
+use tonic::{transport::Channel, Request};
 
 mod route_guide {
     include!(concat!(env!("OUT_DIR"), "/routeguide.rs"));
@@ -13,7 +13,7 @@ mod route_guide {
 async fn main() -> Result<(), Box<dyn std::error::Error>> {
     let origin = http::Uri::from_static("http://[::1]:10000");
 
-    let svc = Client::builder().build(origin)?;
+    let svc = Channel::builder().build(origin)?;
     let mut client = route_guide::RouteGuideClient::new(svc);
 
     let start = Instant::now();
diff --git a/tonic-interop/bin/darwin/client b/tonic-interop/bin/darwin/client
new file mode 100755
index 0000000..9933b90
Binary files /dev/null and b/tonic-interop/bin/darwin/client differ
diff --git a/tonic-interop/bin/darwin/server b/tonic-interop/bin/darwin/server
new file mode 100755
index 0000000..e276f09
Binary files /dev/null and b/tonic-interop/bin/darwin/server differ
diff --git a/tonic-interop/src/bin/client.rs b/tonic-interop/src/bin/client.rs
index 76f4b31..de862f6 100644
--- a/tonic-interop/src/bin/client.rs
+++ b/tonic-interop/src/bin/client.rs
@@ -1,5 +1,6 @@
 use structopt::{clap::arg_enum, StructOpt};
 use tonic_interop::client;
+use tonic::transport::Channel;
 
 #[derive(StructOpt)]
 struct Opts {
@@ -25,8 +26,15 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
     let addr = "localhost:10000";
     let origin = http::Uri::from_shared(format!("http://{}", addr).into()).unwrap();
 
-    let mut client = client::create(origin.clone()).await?;
-    let mut unimplemented_client = client::create_unimplemented(origin).await?;
+    let channel = Channel::builder()
+        // .tls(ca)
+        // .tls_override_domain("foo.test.google.fr")
+        .build(origin)?;
+
+    let mut client = client::TestClient::new(channel.clone());
+    let mut unimplemented_client = client::UnimplementedClient::new(channel);
+
+    let mut failures = Vec::new();
 
     for test_case in test_cases {
         println!("{:?}:", test_case);
@@ -63,9 +71,18 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
 
         for result in test_results {
             println!("  {}", result);
+
+            if result.is_failed() {
+                failures.push(result);
+            }
         }
     }
 
+    if !failures.is_empty() {
+        println!("{} tests failed", failures.len());
+        std::process::exit(1);
+    }
+
     Ok(())
 }
 
diff --git a/tonic-interop/src/client.rs b/tonic-interop/src/client.rs
index 77d4d50..d0093ee 100644
--- a/tonic-interop/src/client.rs
+++ b/tonic-interop/src/client.rs
@@ -1,11 +1,11 @@
 use crate::{pb::*, test_assert, TestAssertion};
 use futures_util::{future, stream, SinkExt, StreamExt};
 use tokio::sync::mpsc;
-use tonic::transport::Client;
+use tonic::transport::Channel;
 use tonic::{metadata::MetadataValue, Code, Request, Response, Status};
 
-pub type TestClient = TestServiceClient<Client>;
-pub type UnimplementedClient = UnimplementedServiceClient<Client>;
+pub type TestClient = TestServiceClient<Channel>;
+pub type UnimplementedClient = UnimplementedServiceClient<Channel>;
 
 tonic::client!(service = "grpc.testing.TestService", proto = "crate::pb");
 tonic::client!(
@@ -22,11 +22,11 @@ const SPECIAL_TEST_STATUS_MESSAGE: &'static str =
     "\t\ntest with whitespace\r\nand Unicode BMP ☺ and non-BMP 😈\t\n";
 
 pub async fn create(origin: http::Uri) -> Result<TestClient, Box<dyn std::error::Error>> {
-    let ca = tokio::fs::read("tonic-interop/data/ca.pem").await?;
+    // let ca = tokio::fs::read("tonic-interop/data/ca.pem").await?;
 
-    let svc = Client::builder()
-        .tls(ca)
-        .tls_override_domain("foo.test.google.fr")
+    let svc = Channel::builder()
+        // .tls(ca)
+        // .tls_override_domain("foo.test.google.fr")
         .build(origin)?;
 
     Ok(TestServiceClient::new(svc))
@@ -35,11 +35,11 @@ pub async fn create(origin: http::Uri) -> Result<TestClient, Box<dyn std::error:
 pub async fn create_unimplemented(
     origin: http::Uri,
 ) -> Result<UnimplementedClient, Box<dyn std::error::Error>> {
-    let ca = tokio::fs::read("tonic-interop/data/ca.pem").await?;
+    // let ca = tokio::fs::read("tonic-interop/data/ca.pem").await?;
 
-    let svc = Client::builder()
-        .tls(ca)
-        .tls_override_domain("foo.test.google.fr")
+    let svc = Channel::builder()
+        // .tls(ca)
+        // .tls_override_domain("foo.test.google.fr")
         .build(origin)?;
 
     Ok(UnimplementedServiceClient::new(svc))
diff --git a/tonic-interop/src/lib.rs b/tonic-interop/src/lib.rs
index 03b64ed..0a4008f 100644
--- a/tonic-interop/src/lib.rs
+++ b/tonic-interop/src/lib.rs
@@ -47,6 +47,15 @@ pub enum TestAssertion {
     },
 }
 
+impl TestAssertion {
+    pub fn is_failed(&self) -> bool {
+        match self {
+            TestAssertion::Failed { .. } => true,
+            _ => false,
+        }
+    }
+}
+
 impl fmt::Display for TestAssertion {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         use console::{style, Emoji};
diff --git a/tonic-interop/test.sh b/tonic-interop/test.sh
index bacf8d2..52841a0 100755
--- a/tonic-interop/test.sh
+++ b/tonic-interop/test.sh
@@ -1,3 +1,19 @@
+#!/usr/bin/env bash
+
+set -eu
+set -o pipefail
+
+SERVER="tonic-interop/bin/darwin/server"
+
+# run the test server
+./"${SERVER}" &
+SERVER_PID=$!
+echo ":; started grpc-go test server."
+
+# trap exits to make sure we kill the server process when the script exits,
+# regardless of why (errors, SIGTERM, etc).
+trap 'echo ":; killing test server"; kill ${SERVER_PID};' EXIT
+
  cargo run -p tonic-interop --bin client -- \
  --test_case=empty_unary,large_unary,client_streaming,server_streaming,ping_pong,\
 empty_stream,status_code_and_message,special_status_message,unimplemented_method,\
diff --git a/tonic/Cargo.toml b/tonic/Cargo.toml
index 0ef1f4c..ce22a95 100644
--- a/tonic/Cargo.toml
+++ b/tonic/Cargo.toml
@@ -27,12 +27,12 @@ tower-make = "=0.1.0-alpha.2"
 tower-reconnect = { path = "../../tower/tower-reconnect", optional = true }
 tower-buffer = { path = "../../tower/tower-buffer", optional = true }
 
-# openssl
+# openssl 
 tokio-openssl = { version = "=0.4.0-alpha.4", optional = true }
 openssl = { version = "0.10", optional = true }
 
 # rustls
-tokio-rustls = { path = "../../tokio-rustls", optional = true }
+tokio-rustls = { version = "0.12.0-alpha.2", optional = true }
 
 [features]
 default = ["transport"]
diff --git a/tonic/src/transport/client.rs b/tonic/src/transport/channel.rs
similarity index 90%
rename from tonic/src/transport/client.rs
rename to tonic/src/transport/channel.rs
index 97cbf9b..f9cff8b 100644
--- a/tonic/src/transport/client.rs
+++ b/tonic/src/transport/channel.rs
@@ -26,17 +26,17 @@ type Inner = Box<
 >;
 
 #[derive(Clone)]
-pub struct Client {
+pub struct Channel {
     svc: Buffer<Inner, Request<BoxBody>>,
 }
 
-impl Client {
+impl Channel {
     pub fn builder() -> Builder {
         Builder::new()
     }
 }
 
-impl GrpcService<BoxBody> for Client {
+impl GrpcService<BoxBody> for Channel {
     type ResponseBody = hyper::Body;
     type Error = super::Error;
 
@@ -89,7 +89,7 @@ impl Builder {
         self
     }
 
-    pub fn build<T>(&self, uri: T) -> Result<Client, super::Error>
+    pub fn build<T>(&self, uri: T) -> Result<Channel, super::Error>
     where
         Uri: http::HttpTryFrom<T>,
     {
@@ -107,7 +107,7 @@ impl Builder {
                 .unwrap_or_else(|| uri.to_string());
 
             #[cfg(not(any(feature = "openssl-1", feature = "rustls")))]
-            panic!("tls configured when no tls implementation feature was selected!");
+            unreachable!("tls configured when no tls implementation feature was selected!");
 
             #[cfg(feature = "openssl-1")]
             let connector = super::openssl::TlsConnector::new(ca.clone(), domain)?;
@@ -131,9 +131,7 @@ impl Builder {
             let svc = BoxService::new(svc);
             Buffer::new(Box::new(svc) as Inner, 100)
         };
-        // let connector = super::rustls::TlsConnector::load(ca).await?;
-        // let connector = super::openssl::TlsConnector::load(ca).await?;
 
-        Ok(Client { svc })
+        Ok(Channel { svc })
     }
 }
diff --git a/tonic/src/transport/mod.rs b/tonic/src/transport/mod.rs
index b9e6b6d..b40c6f3 100644
--- a/tonic/src/transport/mod.rs
+++ b/tonic/src/transport/mod.rs
@@ -1,10 +1,10 @@
-mod client;
+mod channel;
 #[cfg(feature = "openssl-1")]
 mod openssl;
 #[cfg(feature = "rustls")]
 mod rustls;
 
-pub use self::client::Client;
+pub use self::channel::Channel;
 
 use std::{error, fmt};
 
diff --git a/tonic/src/transport/openssl.rs b/tonic/src/transport/openssl.rs
index 5661f81..8ecd321 100644
--- a/tonic/src/transport/openssl.rs
+++ b/tonic/src/transport/openssl.rs
@@ -23,7 +23,7 @@ impl TlsConnector {
     pub fn new(ca: Vec<u8>, domain: String) -> Result<Self, super::Error> {
         let mut config = SslConnector::builder(SslMethod::tls()).unwrap();
 
-        config.set_alpn_protos(b"\x02h2").unwrap();
+        config.set_alpn_protos(b"\x06h2").unwrap();
 
         let ca = X509::from_pem(&ca[..]).unwrap();