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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 771 | blopes | 1 | @startuml |
| 2 | |||
| 3 | ' Licensed to the Apache Software Foundation (ASF) under one or more |
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| 4 | ' contributor license agreements. See the NOTICE file distributed with |
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| 5 | ' this work for additional information regarding copyright ownership. |
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| 6 | ' The ASF licenses this file to You under the Apache License, Version 2.0 |
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| 7 | ' (the "License"); you may not use this file except in compliance with |
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| 8 | ' the License. You may obtain a copy of the License at |
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| 9 | ' |
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| 10 | ' http://www.apache.org/licenses/LICENSE-2.0 |
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| 11 | ' |
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| 12 | ' Unless required by applicable law or agreed to in writing, software |
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| 13 | ' distributed under the License is distributed on an "AS IS" BASIS, |
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| 14 | ' WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 15 | ' See the License for the specific language governing permissions and |
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| 16 | ' limitations under the License. |
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| 17 | |||
| 18 | hide footbox |
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| 19 | skinparam style strictuml |
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| 20 | |||
| 21 | activate Acceptor |
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| 22 | participant NioEndpoint |
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| 23 | participant ServerSocket |
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| 24 | participant SocketChannel |
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| 25 | activate Poller |
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| 26 | participant Selector |
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| 27 | participant Executor |
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| 28 | activate Worker |
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| 29 | |||
| 30 | group Acceptor Loop |
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| 31 | Acceptor -> NioEndpoint ++: serverSocketAccept() |
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| 32 | NioEndpoint -> ServerSocket ++: accept() |
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| 33 | note right of ServerSocket |
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| 34 | This is where Tomcat |
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| 35 | waits for incoming |
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| 36 | connections |
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| 37 | end note |
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| 38 | ServerSocket -->> SocketChannel **: |
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| 39 | return |
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| 40 | return |
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| 41 | |||
| 42 | Acceptor -> NioEndpoint ++: setSocketOptions() |
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| 43 | NioEndpoint -> Poller ++: register() |
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| 44 | return |
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| 45 | return |
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| 46 | end |
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| 47 | |||
| 48 | group Poller Loop (simplified) |
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| 49 | Poller -> Poller ++: events() |
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| 50 | Poller -> SocketChannel ++: register(OP_READ) |
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| 51 | return |
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| 52 | return |
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| 53 | |||
| 54 | Poller -> Selector ++: select() |
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| 55 | return |
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| 56 | |||
| 57 | Poller -> Poller ++: processKey() |
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| 58 | Poller -> NioEndpoint ++: processSocket() |
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| 59 | NioEndpoint -> NioEndpoint ++: createSocketProcessor() |
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| 60 | NioEndpoint -->> SocketProcessor **: |
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| 61 | NioEndpoint -> Executor ++: execute() |
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| 62 | Executor -> Worker ++: run() |
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| 63 | return |
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| 64 | return |
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| 65 | return |
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| 66 | return |
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| 67 | return |
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| 68 | end |
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| 69 | |||
| 70 | Worker -> SocketProcessor ++: run() |
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| 71 | SocketProcessor -> SocketChannel ++: handshake() |
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| 72 | note right of SocketChannel |
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| 73 | TLS handshake |
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| 74 | end note |
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| 75 | return |
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| 76 | SocketProcessor -> ConnectionHandler ++: process() |
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| 77 | ConnectionHandler -> Protocol ++: createProcessor() |
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| 78 | Protocol -->> Processor **: |
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| 79 | activate Processor |
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| 80 | Processor -->> CoyoteRequest **: |
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| 81 | Processor -->> CoyoteResponse **: |
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| 82 | return |
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| 83 | return |
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| 84 | ConnectionHandler -> Processor ++: process() |
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| 85 | Processor -> Processor ++: service() |
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| 86 | note right of Processor |
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| 87 | More detail of this |
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| 88 | processing in the |
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| 89 | protocol specific |
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| 90 | diagrams |
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| 91 | end note |
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| 92 | return |
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| 93 | return |
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| 94 | return |
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| 95 | return |
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| 96 | |||
| 97 | @enduml |