[trafficserver] branch master updated: TS-5088: Fix missing initial buffer from server, when combined with 101 response

[scw00]

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scw00 pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/trafficserver.git


The following commit(s) were added to refs/heads/master by this push:
     new 28d80e5  TS-5088: Fix missing initial buffer from server, when 
combined with 101 response
28d80e5 is described below

commit 28d80e52eca27b55cf7d5c89612afa5a3d25952f
Author: Mervyn McMurray <mmcmu...@cisco.com>
AuthorDate: Tue Jul 25 13:30:19 2017 +0100

    TS-5088: Fix missing initial buffer from server, when combined with 101 
response
---
 proxy/http/HttpSM.cc | 13 +++++++++++--
 proxy/http/HttpSM.h  |  2 +-
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/proxy/http/HttpSM.cc b/proxy/http/HttpSM.cc
index 9c784e8..195d794 100644
--- a/proxy/http/HttpSM.cc
+++ b/proxy/http/HttpSM.cc
@@ -1587,8 +1587,12 @@ HttpSM::handle_api_return()
     if (unlikely(t_state.did_upgrade_succeed)) {
       // We've successfully handled the upgrade, let's now setup
       // a blind tunnel.
+      IOBufferReader *initial_data = nullptr;
       if (t_state.is_websocket) {
         
HTTP_INCREMENT_DYN_STAT(http_websocket_current_active_client_connections_stat);
+        if (server_session) {
+          initial_data = server_session->get_reader();
+        }
 
         if (ua_session) {
           DebugSM("http_websocket",
@@ -1607,7 +1611,7 @@ HttpSM::handle_api_return()
         }
       }
 
-      setup_blind_tunnel(true);
+      setup_blind_tunnel(true, initial_data);
     } else {
       HttpTunnelProducer *p = setup_server_transfer();
       perform_cache_write_action();
@@ -6569,7 +6573,7 @@ HttpSM::setup_push_transfer_to_cache()
 }
 
 void
-HttpSM::setup_blind_tunnel(bool send_response_hdr)
+HttpSM::setup_blind_tunnel(bool send_response_hdr, IOBufferReader *initial)
 {
   HttpTunnelConsumer *c_ua;
   HttpTunnelConsumer *c_os;
@@ -6583,6 +6587,11 @@ HttpSM::setup_blind_tunnel(bool send_response_hdr)
   milestones[TS_MILESTONE_SERVER_BEGIN_WRITE] = Thread::get_hrtime();
   if (send_response_hdr) {
     client_response_hdr_bytes = 
write_response_header_into_buffer(&t_state.hdr_info.client_response, to_ua_buf);
+    if (initial && initial->read_avail()) {
+      int64_t avail = initial->read_avail();
+      to_ua_buf->write(initial, avail);
+      initial->consume(avail);
+    }
   } else {
     client_response_hdr_bytes = 0;
   }
diff --git a/proxy/http/HttpSM.h b/proxy/http/HttpSM.h
index d4c6839..6c4e332 100644
--- a/proxy/http/HttpSM.h
+++ b/proxy/http/HttpSM.h
@@ -466,7 +466,7 @@ protected:
   void perform_cache_write_action();
   void perform_transform_cache_write_action();
   void perform_nca_cache_action();
-  void setup_blind_tunnel(bool send_response_hdr);
+  void setup_blind_tunnel(bool send_response_hdr, IOBufferReader *initial = 
nullptr);
   HttpTunnelProducer *setup_server_transfer_to_transform();
   HttpTunnelProducer *setup_transfer_from_transform();
   HttpTunnelProducer *setup_cache_transfer_to_transform();

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