http.h

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/***************************************************************************************************
 * Copyright 2023 NVIDIA Corporation. All rights reserved.
 **************************************************************************************************/
 
#ifndef MI_NEURAYLIB_HTTP_H
#define MI_NEURAYLIB_HTTP_H
 
#include <cstdarg>
#include <cstdio>
 
#include <mi/base/interface_declare.h>
#include <mi/neuraylib/idata.h>
 
namespace mi {
 
namespace http { class IConnection; class IWeb_socket; }
namespace neuraylib { class IBuffer; }
 
namespace http {
 
class IRequest
{
public:
    virtual const char* get_request_line() const = 0;
 
    virtual const char* get_command() const = 0;
 
    virtual const char* get_protocol() const = 0;
 
    virtual void set_url( const char* url) = 0;
 
    virtual const char* get_url() const = 0;
 
    virtual void set_header( const char* key, const char* value) = 0;
 
    virtual void remove_header( const char* key) = 0;
 
    virtual const char* get_header( const char* key) const = 0;
 
    virtual bool get_header(
        Size index, const char** key_pointer, const char** value_pointer) const = 0;
 
    virtual void set_argument( const char* key, const char* value) = 0;
 
    virtual void add_argument( const char* key, const char* value) = 0;
 
    virtual void remove_argument(const char* key) = 0;
 
    virtual const char* get_argument( const char* key) const = 0;
 
    virtual bool get_argument(
        Size index, const char** key_pointer, const char** value_pointer) const = 0;
 
    virtual const char* get_body() const = 0;
};
 
class IResponse
{
public:
    virtual void set_result_code( Sint32 code, const char* message) = 0;
 
    virtual Sint32 get_result_code() const = 0;
 
    virtual void set_header( const char* key, const char* value) = 0;
 
    virtual void remove_header( const char* key) = 0;
 
    virtual const char* get_header( const char* key) const = 0;
 
    virtual bool get_header(
        Size index, const char** key_pointer, const char** value_pointer) const = 0;
 
    virtual bool was_sent() const = 0;
};
 
class IData_handler : public
    mi::base::Interface_declare<0x723054d8,0xdfa7,0x4475,0xbc,0xb4,0x44,0x23,0x25,0xea,0x52,0x50>
{
public:
    virtual neuraylib::IBuffer* handle( IConnection* connection, neuraylib::IBuffer* buffer) = 0;
};
 
class IConnection
{
public:
    virtual const char* get_peer_address() = 0;
 
    virtual const char* get_local_address() = 0;
 
    virtual bool print( const char* string) = 0;
 
    bool printf( const char* string, ...)
#ifdef MI_COMPILER_GCC
        __attribute__((format(printf, 2, 3)))
#endif
    {
        va_list args;
        va_start( args, string);
        char buffer[16384];
#ifdef MI_COMPILER_MSC
        vsnprintf_s( &buffer[0], sizeof( buffer), sizeof( buffer)-1, string, args);
#else
        vsnprintf( &buffer[0], sizeof( buffer), string, args);
#endif
        bool result = this->print( &buffer[0]);
        va_end( args);
        return result;
    }
 
    virtual bool enqueue( neuraylib::IBuffer* buffer) = 0;
 
    virtual Sint32 flush() = 0;
 
    virtual bool check_error() = 0;
 
    virtual IRequest* get_request() = 0;
 
    virtual IResponse* get_response() = 0;
 
    virtual void add_data_handler( IData_handler* handler) = 0;
 
    virtual void set_data_attachment( const char* key, IData* value) = 0;
 
    virtual IData* get_data_attachment( const char* key) = 0;
 
    template<class T>
    T* get_data_attachment( const char* key)
    {
        IData* ptr = get_data_attachment( key);
        if( !ptr)
            return 0;
        T* ptr_T = static_cast<T*>( ptr->get_interface( typename T::IID()));
        ptr->release();
        return ptr_T;
    }
    virtual void set_attachment( const char* key, const char* value) = 0;
 
    virtual const char* get_attachment( const char* key) = 0;
 
    virtual void remove_attachment( const char* key) = 0;
 
    virtual Sint32 read_data( Size size, char* buffer) = 0;
 
    virtual bool is_secure_connection() = 0;
};
 
class IWeb_socket_state_handler : public
    mi::base::Interface_declare<0x70ad6206,0x38f0,0x4f2a,0xb7,0x5d,0x8f,0x90,0x64,0x3e,0xd0,0x06>
{
public:
    virtual void handle( IWeb_socket* web_socket) = 0;
};
 
class IWeb_socket_data_handler : public
    mi::base::Interface_declare<0xbe989e2c,0xf1e6,0x492a,0xb6,0x42,0x1f,0xd7,0x30,0x1f,0xa2,0x9f>
{
public:
    virtual void handle( IWeb_socket* web_socket, neuraylib::IBuffer* buffer,
        bool binary_frame) = 0;
};
 
class IWeb_socket : public
    mi::base::Interface_declare<0x52fd1beb,0x4c6f,0x4456,0x86,0x9c,0xfd,0xf4,0x12,0x52,0x0a,0xae>
{
public:
    virtual const char* get_peer_address() const = 0;
 
    virtual const char* get_local_address() const = 0;
 
    virtual const char* get_url_path() const = 0;
 
    enum State
    {
        WS_STATE_INIT,
        WS_STATE_CONNECTING,
        WS_STATE_CONNECTED,
        WS_STATE_CLOSING,
        WS_STATE_CLOSED,
        WS_STATE_ERROR,
        WS_STATE_FORCE_32_BIT = 0xffffffffU
    };
 
    virtual State get_state() const = 0;
 
    virtual void set_state_handler( IWeb_socket_state_handler* handler) = 0;
 
    virtual void set_data_handler( IWeb_socket_data_handler* handler) = 0;
 
    virtual Difference write( neuraylib::IBuffer* buffer, bool binary_frame = false) = 0;
 
    virtual bool print( const char* string, bool binary_frame = false) = 0;
 
    bool printf( const char* string, ...)
#ifdef MI_COMPILER_GCC
        __attribute__((format(printf, 2, 3)))
#endif
    {
        va_list args;
        va_start( args, string);
        char buffer[16384];
#ifdef MI_COMPILER_MSC
        vsnprintf_s( &buffer[0], sizeof( buffer), sizeof( buffer)-1, string, args);
#else
        vsnprintf( &buffer[0], sizeof( buffer), string, args);
#endif
        bool result = this->print( &buffer[0]);
        va_end( args);
        return result;
    }
 
    virtual void close() = 0;
 
    virtual IConnection* get_http_connection() = 0;
 
    virtual void set_max_payload(Uint64 bytes) = 0;
 
    virtual Uint64 get_max_payload() = 0;
};
 
mi_static_assert( sizeof( IWeb_socket::State) == sizeof( Uint32));
 
class IWeb_socket_handler : public
    mi::base::Interface_declare<0xb784d27c,0x3b80,0x432e,0x89,0xa0,0x13,0xe7,0x33,0x04,0x82,0x5c>
{
public:
    virtual bool handle( IWeb_socket* web_socket) = 0;
};
 
class IRequest_handler : public
    mi::base::Interface_declare<0x8747d0dd,0x1e27,0x4413,0xa0,0xd4,0x07,0x60,0x8f,0xed,0xfc,0xf9>
{
public:
    virtual bool handle( IConnection* connection) = 0;
};
 
class ICGIRequest_handler : public
    mi::base::Interface_declare<0xa7fe482e,0x65f8,0x4a4c,0x87,0x21,0xff,0x19,0x21,0x36,0xda,0xe0>
{
public:
    virtual bool handle( IConnection* connection) = 0;
};
 
class IResponse_handler : public
    mi::base::Interface_declare<0xa9386278,0x6938,0x45a7,0xa2,0x3b,0xbb,0x35,0xf7,0xe9,0x28,0x20>
{
public:
    virtual void handle( IConnection* connection) = 0;
};
 
class IServer : public
    mi::base::Interface_declare<0x9923b273,0x082f,0x403a,0x83,0x57,0xcd,0x23,0x9b,0xcf,0x68,0x4c>
{
public:
    virtual Sint32 start( const char* listen_address) = 0;
 
    virtual Sint32 start_ssl(
        const char* listen_address, const char* cert_file,
        const char* private_key_file, const char* password) = 0;
 
    virtual void shutdown() = 0;
 
    virtual Sint32 set_default_mime_type( const char* mime_type) = 0;
 
    virtual void add_mime_type( const char* extension, const char* mime_type) = 0;
 
    virtual const char* lookup_mime_type( const char* extension) = 0;
 
    virtual void install( IRequest_handler* handler) = 0;
 
    virtual void remove( IRequest_handler* handler) = 0;
 
    virtual void install( IWeb_socket_handler* handler) = 0;
 
    virtual void remove( IWeb_socket_handler* handler) = 0;
 
    virtual void install( ICGIRequest_handler* handler) = 0;
 
    virtual void remove( ICGIRequest_handler* handler) = 0;
 
    virtual void install( IResponse_handler* handler) = 0;
 
    virtual void remove( IResponse_handler* handler) = 0;
 
    virtual void set_identification( const char* id_string) = 0;
 
    virtual const char* get_listen_address() = 0;
 
    virtual const char* get_ssl_listen_address() = 0;
 
    virtual Size get_nr_of_connections() = 0;
 
    virtual Size get_nr_of_active_connections() = 0;
 
    virtual void set_keep_alive_timeout( Uint32 nr_of_seconds) = 0;
 
    virtual Uint32 get_keep_alive_timeout() const = 0;
 
    virtual void set_send_buffer_size( Uint32 send_buffer_size) = 0;
 
    virtual Uint32 get_send_buffer_size() const = 0;
 
    virtual void set_http_post_body_limit( Uint32 http_post_body_limit) = 0;
 
    virtual Uint32 get_http_post_body_limit() const = 0;
 
    //           try again.
    virtual void set_concurrent_connection_limit( Uint32 limit ) = 0;
 
    virtual Uint32 get_concurrent_connection_limit() = 0;
};
 
class IFactory : public
    mi::base::Interface_declare<0xddded154,0x4be8,0x42b6,0x81,0x68,0x21,0x16,0xc7,0xbd,0x63,0x40>
{
public:
    virtual IServer* create_server() = 0;
 
    virtual IRequest_handler* create_file_handler(
        const char* root_url, const char* root_path, bool is_recursive = true) = 0;
 
    virtual IRequest_handler* create_redirect_handler(
        const char* source_url, const char* target_url) = 0;
 
    virtual IResponse_handler* create_log_handler( const char* path) = 0;
 
    virtual IResponse_handler* create_chunked_encoding_handler() = 0;
 
    virtual IWeb_socket* create_client_web_socket( const char* web_socket_address,
        Float32 connect_timeout) = 0;
};
 // end group mi_neuray_http
 
} // namespace http
 
} // namespace mi
 
#endif // MI_NEURAYLIB_HTTP_H