Update for beast changes:

* Use simplified http::headers
* Use new beast::http::message:
  - Call beast::http::prepare
  - message::method is now a string
* Remove deprecated_http

src/ripple/server/impl/BaseHTTPPeer.h

@@ -30,7 +30,7 @@
 #include <ripple/beast/asio/ssl_error.h> // for is_short_read?
 #include <beast/http/read.hpp>
 #include <beast/http/message.hpp>
-#include <beast/http/parser.hpp>
+#include <beast/http/parser_v1.hpp>
 #include <beast/http/streambuf_body.hpp>
 #include <boost/asio/ip/tcp.hpp>
 #include <boost/asio/ssl/stream.hpp>

src/ripple/server/impl/BaseWSPeer.h

@@ -24,7 +24,7 @@
 #include <ripple/protocol/BuildInfo.h>
 #include <beast/websocket.hpp>
 #include <beast/streambuf.hpp>
-#include <beast/http/message.hpp>
+#include <beast/http/message_v1.hpp>
 #include <cassert>
 
 namespace ripple {
@@ -59,7 +59,7 @@ public:
         Port const& port,
         Handler& handler,
         endpoint_type remote_address,
-        beast::http::message<true, Body, Headers>&& request,
+        beast::http::request_v1<Body, Headers>&& request,
         boost::asio::io_service& io_service,
         beast::Journal journal);
 
@@ -148,7 +148,7 @@ BaseWSPeer<Impl>::BaseWSPeer(
     Port const& port,
     Handler& handler,
     endpoint_type remote_address,
-    beast::http::message<true, Body, Headers>&& request,
+    beast::http::request_v1<Body, Headers>&& request,
     boost::asio::io_service& io_service,
     beast::Journal journal)
     : BasePeer<Impl>(port, handler, remote_address,

src/ripple/server/impl/PlainWSPeer.h

@@ -47,7 +47,7 @@ public:
         Port const& port,
         Handler& handler,
         endpoint_type remote_address,
-        beast::http::message<true, Body, Headers>&& request,
+        beast::http::request_v1<Body, Headers>&& request,
         socket_type&& socket,
         beast::Journal journal);
 
@@ -63,7 +63,7 @@ PlainWSPeer::PlainWSPeer(
     Port const& port,
     Handler& handler,
     endpoint_type remote_address,
-    beast::http::message<true, Body, Headers>&& request,
+    beast::http::request_v1<Body, Headers>&& request,
     socket_type&& socket,
     beast::Journal journal)
     : BaseWSPeer(port, handler, remote_address, std::move(request),

src/ripple/server/impl/SSLWSPeer.h

@@ -53,7 +53,7 @@ public:
         Port const& port,
         Handler& handler,
         endpoint_type remote_endpoint,
-        beast::http::message<true, Body, Headers>&& request,
+        beast::http::request_v1<Body, Headers>&& request,
         std::unique_ptr<
             beast::asio::ssl_bundle>&& ssl_bundle,
         beast::Journal journal);
@@ -73,7 +73,7 @@ SSLWSPeer::SSLWSPeer(
     Port const& port,
     Handler& handler,
     endpoint_type remote_endpoint,
-    beast::http::message<true, Body, Headers>&& request,
+    beast::http::request_v1<Body, Headers>&& request,
     std::unique_ptr<
         beast::asio::ssl_bundle>&& ssl_bundle,
     beast::Journal journal)

src/ripple/server/impl/ServerHandlerImp.cpp

@@ -22,7 +22,7 @@
 #include <ripple/app/misc/NetworkOPs.h>
 #include <ripple/beast/net/IPAddressConversion.h>
 #include <ripple/json/json_reader.h>
-#include <ripple/server/JsonWriter.h>
+#include <ripple/server/json_body.h>
 #include <ripple/server/make_ServerHandler.h>
 #include <ripple/server/impl/JSONRPCUtil.h>
 #include <ripple/server/impl/ServerHandlerImp.h>
@@ -39,6 +39,7 @@
 #include <ripple/rpc/impl/Tuning.h>
 #include <ripple/rpc/RPCHandler.h>
 #include <beast/detail/base64.hpp>
+#include <beast/http/headers.hpp>
 #include <beast/http/rfc2616.hpp>
 #include <boost/algorithm/string.hpp>
 #include <boost/type_traits.hpp>
@@ -203,10 +204,9 @@ Json::Output makeOutput (Session& session)
 }
 
 // HACK!
-template<class Allocator>
 static
 std::map<std::string, std::string>
-build_map(beast::http::headers<Allocator> const& h)
+build_map(beast::http::headers const& h)
 {
     std::map <std::string, std::string> c;
     for (auto const& e : h)

src/ripple/server/impl/ServerHandlerImp.h

@@ -26,7 +26,6 @@
 #include <ripple/json/to_string.h>
 #include <ripple/net/InfoSub.h>
 #include <ripple/server/Handler.h>
-#include <ripple/server/JsonWriter.h>
 #include <ripple/server/ServerHandler.h>
 #include <ripple/server/Session.h>
 #include <ripple/server/WSSession.h>
@@ -62,7 +61,12 @@ public:
         if(! sp)
             return;
         beast::streambuf sb;
-        write(sb, jv);
+        stream(jv,
+            [&](void const* data, std::size_t n)
+            {
+                sb.commit(boost::asio::buffer_copy(
+                    sb.prepare(n), boost::asio::buffer(data, n)));
+            });
         auto m = std::make_shared<
             StreambufWSMsg<decltype(sb)>>(
                 std::move(sb));