capnproto

FORK: Cap'n Proto serialization/RPC system - core tools and C++ library
git clone https://git.neptards.moe/neptards/capnproto.git
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http-over-capnp.h (2947B)

      1 // Copyright (c) 2019 Cloudflare, Inc. and contributors
      2 // Licensed under the MIT License:
      3 //
      4 // Permission is hereby granted, free of charge, to any person obtaining a copy
      5 // of this software and associated documentation files (the "Software"), to deal
      6 // in the Software without restriction, including without limitation the rights
      7 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
      8 // copies of the Software, and to permit persons to whom the Software is
      9 // furnished to do so, subject to the following conditions:
     10 //
     11 // The above copyright notice and this permission notice shall be included in
     12 // all copies or substantial portions of the Software.
     13 //
     14 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     15 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     16 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
     17 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     18 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     19 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
     20 // THE SOFTWARE.
     21 
     22 #pragma once
     23 // Bridges from KJ HTTP to Cap'n Proto HTTP-over-RPC.
     24 
     25 #include <capnp/compat/http-over-capnp.capnp.h>
     26 #include <kj/compat/http.h>
     27 #include <kj/map.h>
     28 #include "byte-stream.h"
     29 
     30 namespace capnp {
     31 
     32 class HttpOverCapnpFactory {
     33 public:
     34   class HeaderIdBundle {
     35   public:
     36     HeaderIdBundle(kj::HttpHeaderTable::Builder& builder);
     37 
     38     HeaderIdBundle clone() const;
     39 
     40   private:
     41     HeaderIdBundle(const kj::HttpHeaderTable& table, kj::Array<kj::HttpHeaderId> nameCapnpToKj,
     42         size_t maxHeaderId);
     43     // Constructor for clone().
     44 
     45     const kj::HttpHeaderTable& table;
     46 
     47     kj::Array<kj::HttpHeaderId> nameCapnpToKj;
     48     size_t maxHeaderId = 0;
     49 
     50     friend class HttpOverCapnpFactory;
     51   };
     52 
     53   HttpOverCapnpFactory(ByteStreamFactory& streamFactory, HeaderIdBundle headerIds);
     54 
     55   kj::Own<kj::HttpService> capnpToKj(capnp::HttpService::Client rpcService);
     56   capnp::HttpService::Client kjToCapnp(kj::Own<kj::HttpService> service);
     57 
     58 private:
     59   ByteStreamFactory& streamFactory;
     60   const kj::HttpHeaderTable& headerTable;
     61   kj::Array<capnp::CommonHeaderName> nameKjToCapnp;
     62   kj::Array<kj::HttpHeaderId> nameCapnpToKj;
     63   kj::Array<kj::StringPtr> valueCapnpToKj;
     64   kj::HashMap<kj::StringPtr, capnp::CommonHeaderValue> valueKjToCapnp;
     65 
     66   class RequestState;
     67 
     68   class CapnpToKjWebSocketAdapter;
     69   class KjToCapnpWebSocketAdapter;
     70 
     71   class ClientRequestContextImpl;
     72   class KjToCapnpHttpServiceAdapter;
     73 
     74   class ServerRequestContextImpl;
     75   class CapnpToKjHttpServiceAdapter;
     76 
     77   kj::HttpHeaders headersToKj(capnp::List<capnp::HttpHeader>::Reader capnpHeaders) const;
     78   // Returned headers may alias into `capnpHeaders`.
     79 
     80   capnp::Orphan<capnp::List<capnp::HttpHeader>> headersToCapnp(
     81       const kj::HttpHeaders& headers, capnp::Orphanage orphanage);
     82 };
     83 
     84 }  // namespace capnp