migrate integration testing to new crate (#2112)

awc/examples/client.rs

@@ -0,0 +1,25 @@
+use actix_http::Error;
+
+#[actix_web::main]
+async fn main() -> Result<(), Error> {
+    std::env::set_var("RUST_LOG", "actix_http=trace");
+    env_logger::init();
+
+    let client = awc::Client::new();
+
+    // Create request builder, configure request and send
+    let mut response = client
+        .get("https://www.rust-lang.org/")
+        .append_header(("User-Agent", "Actix-web"))
+        .send()
+        .await?;
+
+    // server http response
+    println!("Response: {:?}", response);
+
+    // read response body
+    let body = response.body().await?;
+    println!("Downloaded: {:?} bytes", body.len());
+
+    Ok(())
+}