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#ifndef HTTP_ENGINE_INCLUDED
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#define HTTP_ENGINE_INCLUDED
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#include "parse.h"
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typedef enum {
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HTTP_MEMFUNC_MALLOC,
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HTTP_MEMFUNC_FREE,
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} HTTP_MemoryFuncTag;
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typedef void*(*HTTP_MemoryFunc)(HTTP_MemoryFuncTag tag,
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void *ptr, int len, void *data);
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typedef struct {
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HTTP_MemoryFunc memfunc;
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void *memfuncdata;
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unsigned long long curs;
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char* data;
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unsigned int head;
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unsigned int size;
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unsigned int used;
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unsigned int limit;
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char* read_target;
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unsigned int read_target_size;
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int flags;
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} HTTP_ByteQueue;
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typedef unsigned long long HTTP_ByteQueueOffset;
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#define HTTP_ENGINE_STATEBIT_CLIENT (1 << 0)
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#define HTTP_ENGINE_STATEBIT_CLOSED (1 << 1)
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#define HTTP_ENGINE_STATEBIT_RECV_BUF (1 << 2)
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#define HTTP_ENGINE_STATEBIT_RECV_ACK (1 << 3)
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#define HTTP_ENGINE_STATEBIT_SEND_BUF (1 << 4)
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#define HTTP_ENGINE_STATEBIT_SEND_ACK (1 << 5)
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#define HTTP_ENGINE_STATEBIT_REQUEST (1 << 6)
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#define HTTP_ENGINE_STATEBIT_RESPONSE (1 << 7)
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#define HTTP_ENGINE_STATEBIT_PREP (1 << 8)
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#define HTTP_ENGINE_STATEBIT_PREP_HEADER (1 << 9)
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#define HTTP_ENGINE_STATEBIT_PREP_BODY_BUF (1 << 10)
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#define HTTP_ENGINE_STATEBIT_PREP_BODY_ACK (1 << 11)
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#define HTTP_ENGINE_STATEBIT_PREP_ERROR (1 << 12)
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#define HTTP_ENGINE_STATEBIT_PREP_URL (1 << 13)
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#define HTTP_ENGINE_STATEBIT_PREP_STATUS (1 << 14)
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#define HTTP_ENGINE_STATEBIT_CLOSING (1 << 15)
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typedef enum {
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HTTP_ENGINE_STATE_NONE = 0,
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HTTP_ENGINE_STATE_CLIENT_PREP_URL = HTTP_ENGINE_STATEBIT_CLIENT | HTTP_ENGINE_STATEBIT_PREP | HTTP_ENGINE_STATEBIT_PREP_URL,
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HTTP_ENGINE_STATE_CLIENT_PREP_HEADER = HTTP_ENGINE_STATEBIT_CLIENT | HTTP_ENGINE_STATEBIT_PREP | HTTP_ENGINE_STATEBIT_PREP_HEADER,
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HTTP_ENGINE_STATE_CLIENT_PREP_BODY_BUF = HTTP_ENGINE_STATEBIT_CLIENT | HTTP_ENGINE_STATEBIT_PREP | HTTP_ENGINE_STATEBIT_PREP_BODY_BUF,
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HTTP_ENGINE_STATE_CLIENT_PREP_BODY_ACK = HTTP_ENGINE_STATEBIT_CLIENT | HTTP_ENGINE_STATEBIT_PREP | HTTP_ENGINE_STATEBIT_PREP_BODY_ACK,
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HTTP_ENGINE_STATE_CLIENT_PREP_ERROR = HTTP_ENGINE_STATEBIT_CLIENT | HTTP_ENGINE_STATEBIT_PREP | HTTP_ENGINE_STATEBIT_PREP_ERROR,
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HTTP_ENGINE_STATE_CLIENT_SEND_BUF = HTTP_ENGINE_STATEBIT_CLIENT | HTTP_ENGINE_STATEBIT_SEND_BUF,
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HTTP_ENGINE_STATE_CLIENT_SEND_ACK = HTTP_ENGINE_STATEBIT_CLIENT | HTTP_ENGINE_STATEBIT_SEND_ACK,
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HTTP_ENGINE_STATE_CLIENT_RECV_BUF = HTTP_ENGINE_STATEBIT_CLIENT | HTTP_ENGINE_STATEBIT_RECV_BUF,
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HTTP_ENGINE_STATE_CLIENT_RECV_ACK = HTTP_ENGINE_STATEBIT_CLIENT | HTTP_ENGINE_STATEBIT_RECV_ACK,
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HTTP_ENGINE_STATE_CLIENT_READY = HTTP_ENGINE_STATEBIT_CLIENT | HTTP_ENGINE_STATEBIT_RESPONSE,
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HTTP_ENGINE_STATE_CLIENT_CLOSED = HTTP_ENGINE_STATEBIT_CLIENT | HTTP_ENGINE_STATEBIT_CLOSED,
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HTTP_ENGINE_STATE_SERVER_RECV_BUF = HTTP_ENGINE_STATEBIT_RECV_BUF,
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HTTP_ENGINE_STATE_SERVER_RECV_ACK = HTTP_ENGINE_STATEBIT_RECV_ACK,
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HTTP_ENGINE_STATE_SERVER_PREP_STATUS = HTTP_ENGINE_STATEBIT_REQUEST | HTTP_ENGINE_STATEBIT_PREP | HTTP_ENGINE_STATEBIT_PREP_STATUS,
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HTTP_ENGINE_STATE_SERVER_PREP_HEADER = HTTP_ENGINE_STATEBIT_REQUEST | HTTP_ENGINE_STATEBIT_PREP | HTTP_ENGINE_STATEBIT_PREP_HEADER,
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HTTP_ENGINE_STATE_SERVER_PREP_BODY_BUF = HTTP_ENGINE_STATEBIT_REQUEST | HTTP_ENGINE_STATEBIT_PREP | HTTP_ENGINE_STATEBIT_PREP_BODY_BUF,
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HTTP_ENGINE_STATE_SERVER_PREP_BODY_ACK = HTTP_ENGINE_STATEBIT_REQUEST | HTTP_ENGINE_STATEBIT_PREP | HTTP_ENGINE_STATEBIT_PREP_BODY_ACK,
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HTTP_ENGINE_STATE_SERVER_PREP_ERROR = HTTP_ENGINE_STATEBIT_REQUEST | HTTP_ENGINE_STATEBIT_PREP | HTTP_ENGINE_STATEBIT_PREP_ERROR,
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HTTP_ENGINE_STATE_SERVER_SEND_BUF = HTTP_ENGINE_STATEBIT_SEND_BUF,
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HTTP_ENGINE_STATE_SERVER_SEND_ACK = HTTP_ENGINE_STATEBIT_SEND_ACK,
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HTTP_ENGINE_STATE_SERVER_CLOSED = HTTP_ENGINE_STATEBIT_CLIENT,
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} HTTP_EngineState;
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typedef struct {
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HTTP_EngineState state;
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HTTP_ByteQueue input;
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HTTP_ByteQueue output;
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int numexch;
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int reqsize;
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int closing;
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int keepalive;
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HTTP_ByteQueueOffset response_offset;
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HTTP_ByteQueueOffset content_length_offset;
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HTTP_ByteQueueOffset content_length_value_offset;
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union {
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HTTP_Request req;
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HTTP_Response res;
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} result;
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} HTTP_Engine;
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void http_engine_init (HTTP_Engine *eng, int client, HTTP_MemoryFunc memfunc, void *memfuncdata);
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void http_engine_free (HTTP_Engine *eng);
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void http_engine_close (HTTP_Engine *eng);
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HTTP_EngineState http_engine_state (HTTP_Engine *eng);
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const char* http_engine_statestr(HTTP_EngineState state); // TODO: remove
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char* http_engine_recvbuf (HTTP_Engine *eng, int *cap);
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void http_engine_recvack (HTTP_Engine *eng, int num);
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char* http_engine_sendbuf (HTTP_Engine *eng, int *len);
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void http_engine_sendack (HTTP_Engine *eng, int num);
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HTTP_Request* http_engine_getreq (HTTP_Engine *eng);
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HTTP_Response* http_engine_getres (HTTP_Engine *eng);
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void http_engine_url (HTTP_Engine *eng, HTTP_Method method, HTTP_String url, int minor);
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void http_engine_status (HTTP_Engine *eng, int status);
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void http_engine_header (HTTP_Engine *eng, const char *src, int len);
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void http_engine_body (HTTP_Engine *eng, void *src, int len);
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void http_engine_bodycap (HTTP_Engine *eng, int mincap);
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char* http_engine_bodybuf (HTTP_Engine *eng, int *cap);
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void http_engine_bodyack (HTTP_Engine *eng, int num);
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void http_engine_done (HTTP_Engine *eng);
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void http_engine_undo (HTTP_Engine *eng);
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#endif // HTTP_ENGINE_INCLUDED
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