Add initial_max_send_streams() as builder option (#242)

src/proto/connection.rs

@@ -46,6 +46,7 @@ where
 #[derive(Debug, Clone)]
 pub(crate) struct Config {
     pub next_stream_id: StreamId,
+    pub initial_max_send_streams: usize,
     pub reset_stream_duration: Duration,
     pub reset_stream_max: usize,
     pub settings: frame::Settings,
@@ -80,7 +81,7 @@ where
             local_init_window_sz: config.settings
                 .initial_window_size()
                 .unwrap_or(DEFAULT_INITIAL_WINDOW_SIZE),
-            local_max_initiated: None,
+            initial_max_send_streams: config.initial_max_send_streams,
             local_next_stream_id: config.next_stream_id,
             local_push_enabled: config.settings.is_push_enabled(),
             local_reset_duration: config.reset_stream_duration,

src/proto/streams/counts.rs

@@ -32,7 +32,7 @@ impl Counts {
     pub fn new(peer: peer::Dyn, config: &Config) -> Self {
         Counts {
             peer,
-            max_send_streams: config.local_max_initiated.unwrap_or(usize::MAX),
+            max_send_streams: config.initial_max_send_streams,
             num_send_streams: 0,
             max_recv_streams: config.remote_max_initiated.unwrap_or(usize::MAX),
             num_recv_streams: 0,

src/proto/streams/mod.rs

@@ -26,17 +26,20 @@ use self::stream::Stream;
 use frame::{StreamId, StreamIdOverflow};
 use proto::*;
 
-use std::time::Duration;
 use bytes::Bytes;
 use http::{Request, Response};
+use std::time::Duration;
 
 #[derive(Debug)]
 pub struct Config {
     /// Initial window size of locally initiated streams
     pub local_init_window_sz: WindowSize,
 
-    /// Maximum number of locally initiated streams
-    pub local_max_initiated: Option<usize>,
+    /// Initial maximum number of locally initiated streams.
+    /// After receiving a Settings frame from the remote peer,
+    /// the connection will overwrite this value with the
+    /// MAX_CONCURRENT_STREAMS specified in the frame.
+    pub initial_max_send_streams: usize,
 
     /// The stream ID to start the next local stream with
     pub local_next_stream_id: StreamId,