125 lines
3.7 KiB
C++
125 lines
3.7 KiB
C++
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// HTTPConnection.h
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// Declares the cHTTPConnection class representing a single persistent connection in the HTTP server.
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#pragma once
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#include "../OSSupport/Network.h"
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// fwd:
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class cHTTPServer;
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class cHTTPResponse;
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class cHTTPRequestParser;
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class cHTTPServerConnection :
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public cTCPLink::cCallbacks
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{
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public:
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enum eState
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{
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wcsRecvHeaders, ///< Receiving request headers (m_CurrentRequest is created if nullptr)
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wcsRecvBody, ///< Receiving request body (m_CurrentRequest is valid)
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wcsRecvIdle, ///< Has received the entire body, waiting to send the response (m_CurrentRequest == nullptr)
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wcsSendingResp, ///< Sending response body (m_CurrentRequest == nullptr)
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wcsInvalid, ///< The request was malformed, the connection is closing
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} ;
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cHTTPServerConnection(cHTTPServer & a_HTTPServer);
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virtual ~cHTTPServerConnection();
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/** Sends HTTP status code together with a_Reason (used for HTTP errors).
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Sends the a_Reason as the body as well, so that browsers display it. */
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void SendStatusAndReason(int a_StatusCode, const AString & a_Reason);
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/** Sends the "401 unauthorized" reply together with instructions on authorizing, using the specified realm */
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void SendNeedAuth(const AString & a_Realm);
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/** Sends the headers contained in a_Response */
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void Send(const cHTTPResponse & a_Response);
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/** Sends the data as the response (may be called multiple times) */
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void Send(const void * a_Data, size_t a_Size);
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/** Sends the data as the response (may be called multiple times) */
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void Send(const AString & a_Data) { Send(a_Data.data(), a_Data.size()); }
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/** Indicates that the current response is finished, gets ready for receiving another request (HTTP 1.1 keepalive) */
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void FinishResponse(void);
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/** Resets the internal connection state for a new request.
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Depending on the state, this will send an "InternalServerError" status or a "ResponseEnd" */
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void AwaitNextRequest(void);
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/** Terminates the connection; finishes any request being currently processed */
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void Terminate(void);
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protected:
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typedef std::map<AString, AString> cNameValueMap;
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/** The parent webserver that is to be notified of events on this connection */
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cHTTPServer & m_HTTPServer;
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/** All the incoming data until the entire request header is parsed */
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AString m_IncomingHeaderData;
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/** Status in which the request currently is */
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eState m_State;
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/** The request being currently received
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Valid only between having parsed the headers and finishing receiving the body. */
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cHTTPRequestParser * m_CurrentRequest;
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/** Number of bytes that remain to read for the complete body of the message to be received.
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Valid only in wcsRecvBody */
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size_t m_CurrentRequestBodyRemaining;
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/** The network link attached to this connection. */
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cTCPLinkPtr m_Link;
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// cTCPLink::cCallbacks overrides:
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/** The link instance has been created, remember it. */
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virtual void OnLinkCreated(cTCPLinkPtr a_Link) override;
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/** Data is received from the client. */
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virtual void OnReceivedData(const char * a_Data, size_t a_Size) override;
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/** The socket has been closed for any reason. */
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virtual void OnRemoteClosed(void) override;
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/** An error has occurred on the socket. */
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virtual void OnError(int a_ErrorCode, const AString & a_ErrorMsg) override;
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// Overridable:
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/** Called to send raw data over the link. Descendants may provide data transformations (SSL etc.) */
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virtual void SendData(const void * a_Data, size_t a_Size);
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/** Sends the raw data over the link.
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Descendants may provide data transformations (SSL etc.) via the overridable SendData() function. */
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void SendData(const AString & a_Data)
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{
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SendData(a_Data.data(), a_Data.size());
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}
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} ;
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typedef std::vector<cHTTPServerConnection *> cHTTPServerConnections;
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