fcgi.h

#ifndef _FCGI_H_
#define _FCGI_H_

/* * Listening socket file number */
#define FCGI_LISTENSOCK_FILENO 0

/** Number of bytes in a FCGI_Header.  Future versions of the protocol * will not reduce this number. */
#define FCGI_HEADER_LEN  8 
/** Value for FCGI_Header.version */
#define FCGI_VERSION_1   1 

/** Values for FCGI_Header.type */

#define FCGI_BEGIN_REQUEST       1
#define FCGI_ABORT_REQUEST       2
#define FCGI_END_REQUEST         3
#define FCGI_PARAMS              4
#define FCGI_STDIN               5
#define FCGI_STDOUT              6
#define FCGI_STDERR              7
#define FCGI_DATA                8
#define FCGI_GET_VALUES          9
#define FCGI_GET_VALUES_RESULT  10
#define FCGI_UNKNOWN_TYPE       11
#define FCGI_MAXTYPE (FCGI_UNKNOWN_TYPE)

/** Value for FCGI_Header.requestId */
#define FCGI_NULL_REQUEST_ID     0

/** Mask for FCGI_BeginRequestBody.flags */
#define FCGI_KEEP_CONN  1
/** Values for FCGI_BeginRequestBody.role */
#define FCGI_RESPONDER  1
#define FCGI_AUTHORIZER 2
#define FCGI_FILTER     3

/** Values for FCGI_EndRequestBody.protocolStatus */
#define FCGI_REQUEST_COMPLETE 0
#define FCGI_CANT_MPX_CONN    1
#define FCGI_OVERLOADED       2
#define FCGI_UNKNOWN_ROLE     3

/* * Variable names for FCGI_GET_VALUES / FCGI_GET_VALUES_RESULT records */
#define FCGI_MAX_CONNS  "FCGI_MAX_CONNS"
#define FCGI_MAX_REQS   "FCGI_MAX_REQS"
#define FCGI_MPXS_CONNS "FCGI_MPXS_CONNS"

typedef struct {
    unsigned char version;
    unsigned char type;
    unsigned char requestIdB1;
    unsigned char requestIdB0;
    unsigned char contentLengthB1;
    unsigned char contentLengthB0;
    unsigned char paddingLength;
    unsigned char reserved;
} FCGI_Header;


typedef struct {
  unsigned char roleB1;
  unsigned char roleB0;
  unsigned char flags;
  unsigned char reserved[5];
} FCGI_BeginRequestBody;

typedef struct {
    FCGI_Header header;
    FCGI_BeginRequestBody body;
} FCGI_BeginRequestRecord;


typedef struct {
    unsigned char appStatusB3;
    unsigned char appStatusB2;
    unsigned char appStatusB1;
    unsigned char appStatusB0;
    unsigned char protocolStatus;
    unsigned char reserved[3];
} FCGI_EndRequestBody;

typedef struct {
  FCGI_Header header;
  FCGI_EndRequestBody body;
} FCGI_EndRequestRecord;



typedef struct {
    unsigned char type;        unsigned char reserved[7];
} FCGI_UnknownTypeBody;

typedef struct {
    FCGI_Header header;
    FCGI_UnknownTypeBody body;
} FCGI_UnknownTypeRecord;

#endif