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Frame Machine Notation for W3.ORG HTTP 1.0 client
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| //-------------------------------------------------// | |
| // // | |
| // FMN // | |
| // // | |
| //-------------------------------------------------// | |
| // see W3.ORG Spec - https://dev.w3.org/libwww/Library/User/Architecture/HTTPFeatures.html | |
| #Http_1_0_Client | |
| -interface- | |
| start @(|>>|) | |
| ok @(|OK|) | |
| status200 @(|200|) | |
| status203 @(|203|) | |
| status204 @(|204|) | |
| status301 @(|301|) | |
| status302 @(|302|) | |
| status304 @(|304|) | |
| status401 @(|401|) | |
| http_0_9 @(|Http 0.9|) | |
| error @(|Error|) | |
| -machine- | |
| $Begin | |
| |>>| ->> $NeedConnection ^ | |
| $NeedConnection | |
| |OK| ->> $NeedRequest ^ | |
| |Error| ->> $ErrorFailure ^ | |
| $NeedRequest | |
| |OK| ->> $SentRequest ^ | |
| |Error| ->> $ErrorFailure ^ | |
| $SentRequest | |
| |301|302| ->> $Redirection ^ | |
| |204|304| ->> $NoData ^ | |
| |200|203|Http 0.9| ->> $NeedBody ^ | |
| |401| ->> $NeedAccessAuth ^ | |
| |Error| ->> $ErrorFailure ^ | |
| $Redirection | |
| $NoData | |
| $NeedBody | |
| |OK| ->> $GotData ^ | |
| |Error| ->> $ErrorFailure ^ | |
| $GotData | |
| $NeedAccessAuth | |
| |OK| ->> $NeedConnection ^ | |
| $ErrorFailure | |
| //-------------------------------------------------// | |
| // // | |
| // Implementation // | |
| // // | |
| //-------------------------------------------------// | |
| class FrameEvent { | |
| var _msg:String | |
| var _params:Object | |
| var _return:Object | |
| FrameEvent(msg:String, params:Object = null) { | |
| _msg = msg | |
| _params = params | |
| } | |
| } | |
| //-------------------------------------------------// | |
| class Http_1_0_Client { | |
| /********************************** | |
| -interface- | |
| start @(|>>|) | |
| ok @(|OK|) | |
| status200 @(|200|) | |
| status203 @(|203|) | |
| status204 @(|204|) | |
| status301 @(|301|) | |
| status302 @(|302|) | |
| status304 @(|304|) | |
| status401 @(|401|) | |
| http_0_9 @(|Http 0.9|) | |
| error @(|Error|) | |
| ***********************************/ | |
| func start() { _state(new FrameEvent(">>")) } | |
| func OK() { _state(new FrameEvent("OK")) } | |
| func status200() { _state(new FrameEvent("200")) } | |
| func status203() { _state(new FrameEvent("203")) } | |
| func status204() { _state(new FrameEvent("204")) } | |
| func status301() { _state(new FrameEvent("301")) } | |
| func status302() { _state(new FrameEvent("302")) } | |
| func status304() { _state(new FrameEvent("304")) } | |
| func status401() { _state(new FrameEvent("401")) } | |
| func http_0_9() { _state(new FrameEvent("Http 0.9")) } | |
| func error() { _state(new FrameEvent("Error")) } | |
| // -machine- | |
| var _state(e:FrameEvent) = Begin | |
| /********************************** | |
| $Begin | |
| |>>| ->> $NeedConnection ^ | |
| ***********************************/ | |
| func Begin(e:FrameEvent) { | |
| if (e._msg == ">>") { | |
| _state = NeedConnection | |
| return | |
| } | |
| } | |
| /********************************** | |
| $NeedConnection | |
| |OK| ->> $NeedRequest ^ | |
| |Error| ->> $ErrorFailure ^ | |
| ***********************************/ | |
| func NeedConnection(e:FrameEvent) { | |
| if (e._msg == "OK") { | |
| _state = NeedRequest | |
| return | |
| } | |
| if (e._msg == "Error") { | |
| _state = ErrorFailure | |
| return | |
| } | |
| } | |
| /********************************** | |
| $NeedRequest | |
| |OK| ->> $SentRequest ^ | |
| |Error| ->> $ErrorFailure ^ | |
| ***********************************/ | |
| func NeedRequest(e:FrameEvent) { | |
| if (e._msg == "OK") { | |
| _state = SentRequest | |
| return | |
| } | |
| if (e._msg == "Error") { | |
| _state = ErrorFailure | |
| return | |
| } | |
| } | |
| /********************************** | |
| $SentRequest | |
| |301|302| ->> $Redirection ^ | |
| |204|304| ->> $NoData ^ | |
| |200|203|Http 0.9| ->> $NeedBody ^ | |
| |401| ->> $NeedAccessAuth ^ | |
| |Error| ->> $ErrorFailure ^ | |
| ***********************************/ | |
| func SentRequest(e:FrameEvent) { | |
| if (e._msg == "301" || e._msg == "302") { | |
| _state = Redirection | |
| return | |
| } | |
| if (e._msg == "301" || e._msg == "302") { | |
| _state = NoData | |
| return | |
| } | |
| if (e._msg == "200" || e._msg == "203" || e._msg == "Http 0.9") { | |
| _state = NeedBody | |
| return | |
| } | |
| if (e._msg == "401") { | |
| _state = NeedAccessAuth | |
| return | |
| } | |
| if (e._msg == "Error") { | |
| _state = ErrorFailure | |
| return | |
| } | |
| } | |
| /********************************** | |
| $Redirection | |
| ***********************************/ | |
| func Redirection(e:FrameEvent) { | |
| } | |
| /********************************** | |
| $NoData | |
| ***********************************/ | |
| func NoData(e:FrameEvent) { | |
| } | |
| /********************************** | |
| $NeedBody | |
| |OK| ->> $GotData ^ | |
| |Error| ->> $Error ^ | |
| ***********************************/ | |
| func NeedBody(e:FrameEvent) { | |
| if (e._msg == "OK") { | |
| _state = GotData | |
| return | |
| } | |
| if (e._msg == "Error") { | |
| _state = Error | |
| return | |
| } | |
| } | |
| /********************************** | |
| $GotData | |
| ***********************************/ | |
| func GotData(e:FrameEvent) { | |
| } | |
| /********************************** | |
| $NeedAccessAuth | |
| |OK| ->> $NeedConnection ^ | |
| ***********************************/ | |
| func NeedAccessAuth(e:FrameEvent) { | |
| if (e._msg == "OK") { | |
| _state = NeedConnection | |
| return | |
| } | |
| } | |
| /********************************** | |
| $ErrorFailure | |
| ***********************************/ | |
| func ErrorFailure(e:FrameEvent) { | |
| } | |
| } |
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