everity
of the error, the application may either continue or
exit with nonzero status.<p>



<h3><a name = "S8">8. Types and Constants</a></h3>
<pre>
/*
 * Listening socket file number
 */
#define FCGI_LISTENSOCK_FILENO 0

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;

/*
 * Number