Add HTTP/0.9 responses support

Cargo.toml

@@ -95,7 +95,7 @@ encoding_rs = "0.8"
 futures-core = { version = "0.3.0", default-features = false }
 futures-util = { version = "0.3.0", default-features = false }
 http-body = "0.4.0"
-hyper = { version = "0.14", default-features = false, features = ["tcp", "http1", "http2", "client", "runtime"] }
+hyper = { version = "0.14.5", default-features = false, features = ["tcp", "http1", "http2", "client", "runtime"] }
 h2 = "0.3.10"
 lazy_static = "1.4"
 log = "0.4"

src/async_impl/client.rs

@@ -103,6 +103,7 @@ struct Config {
     #[cfg(feature = "__tls")]
     tls: TlsBackend,
     http_version_pref: HttpVersionPref,
+    http09_responses: bool,
     http1_title_case_headers: bool,
     http2_initial_stream_window_size: Option<u32>,
     http2_initial_connection_window_size: Option<u32>,
@@ -166,6 +167,7 @@ impl ClientBuilder {
                 #[cfg(feature = "__tls")]
                 tls: TlsBackend::default(),
                 http_version_pref: HttpVersionPref::All,
+                http09_responses: false,
                 http1_title_case_headers: false,
                 http2_initial_stream_window_size: None,
                 http2_initial_connection_window_size: None,
@@ -458,6 +460,10 @@ impl ClientBuilder {
         builder.pool_max_idle_per_host(config.pool_max_idle_per_host);
         connector.set_keepalive(config.tcp_keepalive);
 
+        if config.http09_responses {
+            builder.http09_responses(true);
+        }
+
         if config.http1_title_case_headers {
             builder.http1_title_case_headers(true);
         }
@@ -842,6 +848,12 @@ impl ClientBuilder {
         self
     }
 
+    /// Allow HTTP/0.9 responses
+    pub fn http09_responses(mut self) -> ClientBuilder {
+        self.config.http09_responses = true;
+        self
+    }
+
     /// Only use HTTP/2.
     pub fn http2_prior_knowledge(mut self) -> ClientBuilder {
         self.config.http_version_pref = HttpVersionPref::Http2;

src/blocking/client.rs

@@ -412,6 +412,11 @@ impl ClientBuilder {
         self.with_inner(|inner| inner.http1_only())
     }
 
+    /// Allow HTTP/0.9 responses
+    pub fn http09_responses(self) -> ClientBuilder {
+        self.with_inner(|inner| inner.http09_responses())
+    }
+
     /// Only use HTTP/2.
     pub fn http2_prior_knowledge(self) -> ClientBuilder {
         self.with_inner(|inner| inner.http2_prior_knowledge())