cas_network.h File Reference

#include <string.h>
#include "cas_net_buf.h"

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Classes
struct	MSG_HEADER

Macros
#define	NET_MIN_TIMEOUT   2
#define	NET_DEFAULT_TIMEOUT   60
#define	MYSQL_CONNECT_TIMEOUT   (5*60*60) /* 5 hour. MySQL timeout = 8 hour */
#define	NET_SIZE_BYTE   ((int) sizeof(char))
#define	NET_SIZE_SHORT   ((int) sizeof(short))
#define	NET_SIZE_INT   ((int) sizeof(int))
#define	NET_SIZE_FLOAT   ((int) sizeof(float))
#define	NET_SIZE_DOUBLE   ((int) sizeof(double))
#define	NET_SIZE_INT64   ((int) sizeof(INT64))
#define	NET_SIZE_BIGINT   NET_SIZE_INT64
#define	NET_SIZE_DATE   (NET_SIZE_SHORT + NET_SIZE_SHORT + NET_SIZE_SHORT)
#define	NET_SIZE_TIME   (NET_SIZE_SHORT + NET_SIZE_SHORT + NET_SIZE_SHORT)
#define	NET_SIZE_OBJECT   (NET_SIZE_INT + NET_SIZE_SHORT + NET_SIZE_SHORT)
#define	NET_SIZE_TIMESTAMP   (NET_SIZE_SHORT * 6)
#define	NET_SIZE_DATETIME   (NET_SIZE_SHORT * 7)
#define	NET_ARG_GET_SIZE(SIZE, ARG)
#define	NET_ARG_GET_BIGINT(VALUE, ARG)
#define	NET_ARG_GET_INT(VALUE, ARG)
#define	NET_ARG_GET_SHORT(VALUE, ARG)
#define	NET_ARG_GET_FLOAT(VALUE, ARG)
#define	NET_ARG_GET_DOUBLE(VALUE, ARG)
#define	NET_ARG_GET_CHAR(VALUE, ARG)
#define	NET_ARG_GET_STR(VALUE, SIZE, ARG)
#define	NET_ARG_GET_DATE(YEAR, MON, DAY, ARG)
#define	NET_ARG_GET_TIME(HH, MM, SS, ARG)
#define	NET_ARG_GET_TIMESTAMP(YR, MON, DAY, HH, MM, SS, ARG)
#define	NET_ARG_GET_DATETIME(YR, MON, DAY, HH, MM, SS, MS, ARG)
#define	NET_ARG_GET_OBJECT(VALUE, ARG)
#define	NET_ARG_GET_CCI_OBJECT(PAGEID, SLOTID, VOLID, ARG)
#define	NET_ARG_GET_CACHE_TIME(CT, ARG)

Functions
SOCKET	net_init_env (char *port_name)
SOCKET	net_connect_proxy (void)
SOCKET	net_connect_client (SOCKET srv_sock_fd)
int	net_read_stream (SOCKET sock_fd, char *buf, int size)
int	net_write_stream (SOCKET sock_fd, const char *buf, int size)
int	net_write_int (SOCKET sock_fd, int value)
int	net_read_int (SOCKET sock_fd, int *value)
int	net_decode_str (char *msg, int msg_size, char *func_code, void ***ret_argv)
int	net_read_to_file (SOCKET sock_fd, int file_size, char *filename)
int	net_write_from_file (SOCKET sock_fd, int file_size, char *filename)
void	net_timeout_set (int timeout_sec)
void	init_msg_header (MSG_HEADER *header)
int	net_read_header (SOCKET sock_fd, MSG_HEADER *header)
int	net_write_header (SOCKET sock_fd, MSG_HEADER *header)
bool	is_net_timed_out (void)
void	net_write_error (SOCKET sock, int version, char *driver_info, char *cas_info, int cas_info_size, int indicator, int code, char *msg)

Macro Definition Documentation

#define MYSQL_CONNECT_TIMEOUT   (5*60*60) /* 5 hour. MySQL timeout = 8 hour */

Definition at line 35 of file cas_network.h.

#define NET_ARG_GET_BIGINT	(		VALUE,
			ARG
	)

Value:

do {                                                               \
          DB_BIGINT   tmp_i;                                               \
          memcpy(&tmp_i, (char*) (ARG) + NET_SIZE_INT, NET_SIZE_BIGINT);           \
          VALUE = ntohi64(tmp_i);                                          \
        } while (0)

Definition at line 70 of file cas_network.h.

#define NET_ARG_GET_CACHE_TIME	(		CT,
			ARG
	)

Value:

do {                                        \
          char *cur_p = (char*) ARG;                \
          int sec, usec;                            \
          int pos = NET_SIZE_INT;                       \
          memcpy(&sec, cur_p + pos, NET_SIZE_INT);      \
          pos += NET_SIZE_INT;                          \
          memcpy(&usec, cur_p + pos, NET_SIZE_INT);     \
          (CT)->sec = ntohl(sec);                   \
          (CT)->usec = ntohl(usec);                 \
        } while (0)

Definition at line 248 of file cas_network.h.

#define NET_ARG_GET_CCI_OBJECT	(		PAGEID,
			SLOTID,
			VOLID,
			ARG
	)

Value:

do {                            \
      char  *_macro_tmp_p = (char*) ARG;            \
      int   _tmp_pageid;                    \
      short _tmp_slotid, _tmp_volid;            \
      int           pos = NET_SIZE_INT;                         \
          memcpy(&_tmp_pageid, _macro_tmp_p + pos, NET_SIZE_INT);   \
	  PAGEID = ntohl(_tmp_pageid);             \
      pos += NET_SIZE_INT;                                      \
      memcpy(&_tmp_slotid, _macro_tmp_p + pos, NET_SIZE_SHORT); \
      SLOTID = ntohs(_tmp_slotid);              \
      pos += NET_SIZE_SHORT;                                    \
          memcpy(&_tmp_volid, _macro_tmp_p + pos, NET_SIZE_SHORT);  \
	  VOLID = ntohs(_tmp_volid);               \
    } while (0)

Definition at line 232 of file cas_network.h.

#define NET_ARG_GET_CHAR	(		VALUE,
			ARG
	)

Value:

do {                                                               \
      VALUE = (*((char*) (ARG) + NET_SIZE_INT));                           \
    } while (0)

Definition at line 106 of file cas_network.h.

#define NET_ARG_GET_DATE	(		YEAR,
			MON,
			DAY,
			ARG
	)

Value:

do {                                                \
      char      *cur_p = (char*) ARG;                   \
      short     tmp_s;                          \
      int           pos = NET_SIZE_INT;                         \
      memcpy(&tmp_s, cur_p + pos, NET_SIZE_SHORT);      \
	  YEAR = ntohs(tmp_s);                             \
      pos += NET_SIZE_SHORT;                                    \
      memcpy(&tmp_s, cur_p + pos, NET_SIZE_SHORT);      \
      MON = ntohs(tmp_s);                               \
          pos += NET_SIZE_SHORT;                                    \
      memcpy(&tmp_s, cur_p + pos, NET_SIZE_SHORT);      \
	  DAY = ntohs(tmp_s);                              \
    } while (0)

Definition at line 127 of file cas_network.h.

#define NET_ARG_GET_DATETIME	(		YR,
			MON,
			DAY,
			HH,
			MM,
			SS,
			MS,
			ARG
	)

Value:

do {                                                         \
          char          *cur_p = (char*) ARG;                        \
          short         tmp_s;                                       \
          int           pos = NET_SIZE_INT;                              \
          memcpy(&tmp_s, cur_p + pos, NET_SIZE_SHORT);                   \
          YR = ntohs(tmp_s);                                         \
          pos += NET_SIZE_SHORT;                                         \
          memcpy(&tmp_s, cur_p + pos, NET_SIZE_SHORT);                   \
          MON = ntohs(tmp_s);                                        \
          pos += NET_SIZE_SHORT;                                         \
          memcpy(&tmp_s, cur_p + pos, NET_SIZE_SHORT);                   \
          DAY = ntohs(tmp_s);                                        \
          pos += NET_SIZE_SHORT;                                         \
          memcpy(&tmp_s, cur_p + pos, NET_SIZE_SHORT);                   \
          HH = ntohs(tmp_s);                                         \
          pos += NET_SIZE_SHORT;                                         \
          memcpy(&tmp_s, cur_p + pos, NET_SIZE_SHORT);                   \
          MM = ntohs(tmp_s);                                         \
          pos += NET_SIZE_SHORT;                                         \
          memcpy(&tmp_s, cur_p + pos, NET_SIZE_SHORT);                   \
          SS = ntohs(tmp_s);                                         \
          pos += NET_SIZE_SHORT;                                         \
          memcpy(&tmp_s, cur_p + pos, NET_SIZE_SHORT);                   \
          MS = ntohs(tmp_s);                                         \
        } while (0)

Definition at line 181 of file cas_network.h.

#define NET_ARG_GET_DOUBLE	(		VALUE,
			ARG
	)

Value:

do {                                                               \
      double    tmp_d;                                             \
      memcpy(&tmp_d, (char*) (ARG) + NET_SIZE_INT, NET_SIZE_DOUBLE);           \
      VALUE = net_ntohd(tmp_d);                                        \
    } while (0)

Definition at line 99 of file cas_network.h.

#define NET_ARG_GET_FLOAT	(		VALUE,
			ARG
	)

Value:

do {                                                               \
      float tmp_f;                                                     \
      memcpy(&tmp_f, (char*) (ARG) + NET_SIZE_INT, NET_SIZE_FLOAT);            \
      VALUE = net_ntohf(tmp_f);                                        \
    } while (0)

Definition at line 92 of file cas_network.h.

#define NET_ARG_GET_INT	(		VALUE,
			ARG
	)

Value:

do {                                                               \
      int   tmp_i;                                                     \
      memcpy(&tmp_i, (char*) (ARG) + NET_SIZE_INT, NET_SIZE_INT);              \
      VALUE = ntohl(tmp_i);                                            \
    } while (0)

Definition at line 78 of file cas_network.h.

#define NET_ARG_GET_OBJECT	(		VALUE,
			ARG
	)

Value:

do {                    \
      char      *cur_p = (char*) ARG;   \
      int       pageid;         \
      short     slotid, volid;      \
	  DB_IDENTIFIER    tmp_oid;        \
	  DB_OBJECT    *tmp_obj;       \
      int           pos = NET_SIZE_INT;         \
      memcpy(&pageid, cur_p + pos, NET_SIZE_INT);\
      pageid = ntohl(pageid);       \
      pos += NET_SIZE_INT;                      \
      memcpy(&slotid, cur_p + pos, NET_SIZE_SHORT);\
      slotid = ntohs(slotid);       \
      pos += NET_SIZE_SHORT;                    \
          memcpy(&volid, cur_p + pos, NET_SIZE_SHORT);\
      volid = ntohs(volid);             \
      pos += NET_SIZE_SHORT;                    \
          tmp_oid.pageid = pageid;      \
      tmp_oid.slotid = slotid;      \
      tmp_oid.volid = volid;        \
      tmp_obj = db_object(&tmp_oid);    \
      VALUE = tmp_obj;          \
    } while (0)

Definition at line 208 of file cas_network.h.

#define NET_ARG_GET_SHORT	(		VALUE,
			ARG
	)

Value:

do {                                                               \
      short tmp_s;                                         \
      memcpy(&tmp_s, (char*) (ARG) + NET_SIZE_INT, NET_SIZE_SHORT);            \
      VALUE = ntohs(tmp_s);                                            \
    } while (0)

Definition at line 85 of file cas_network.h.

#define NET_ARG_GET_SIZE	(		SIZE,
			ARG
	)

Value:

do {                                            \
      int   tmp_i;                                  \
      memcpy(&tmp_i, (char*) (ARG), NET_SIZE_INT);      \
      SIZE = ntohl(tmp_i);                          \
    } while (0)

Definition at line 54 of file cas_network.h.

#define NET_ARG_GET_STR	(		VALUE,
			SIZE,
			ARG
	)

Value:

do {                                            \
      int   _size;                                  \
      char  *cur_p = (char*) ARG;                   \
      memcpy(&_size, cur_p, NET_SIZE_INT);              \
      _size = ntohl(_size);                         \
      cur_p += NET_SIZE_INT;                            \
	  if (_size <= 0) {                             \
        VALUE = NULL;                               \
        SIZE = 0;                                   \
      } else {                                      \
        VALUE = ((char*) cur_p);                    \
        SIZE = _size;                               \
      }                                             \
    } while (0)

Definition at line 111 of file cas_network.h.

#define NET_ARG_GET_TIME	(		HH,
			MM,
			SS,
			ARG
	)

Value:

do {                                                         \
      char      *cur_p = (char*) ARG;                        \
      short     tmp_s;                               \
          int           pos = NET_SIZE_INT + NET_SIZE_SHORT * 3;             \
      memcpy(&tmp_s, cur_p + pos, NET_SIZE_SHORT);                   \
      HH = ntohs(tmp_s);                                         \
          pos += NET_SIZE_SHORT;                                         \
      memcpy(&tmp_s, cur_p + pos, NET_SIZE_SHORT);                   \
      MM = ntohs(tmp_s);                                         \
          pos += NET_SIZE_SHORT;                                         \
      memcpy(&tmp_s, cur_p + pos, NET_SIZE_SHORT);                   \
      SS = ntohs(tmp_s);                                         \
    } while (0)

Definition at line 142 of file cas_network.h.

#define NET_ARG_GET_TIMESTAMP	(		YR,
			MON,
			DAY,
			HH,
			MM,
			SS,
			ARG
	)

Value:

do {                                                         \
          char          *cur_p = (char*) ARG;                        \
          short         tmp_s;                                       \
          int           pos = NET_SIZE_INT;                              \
          memcpy(&tmp_s, cur_p + pos, NET_SIZE_SHORT);                   \
          YR = ntohs(tmp_s);                                         \
          pos += NET_SIZE_SHORT;                                         \
          memcpy(&tmp_s, cur_p + pos, NET_SIZE_SHORT);                   \
          MON = ntohs(tmp_s);                                        \
          pos += NET_SIZE_SHORT;                                         \
          memcpy(&tmp_s, cur_p + pos, NET_SIZE_SHORT);                   \
          DAY = ntohs(tmp_s);                                        \
          pos += NET_SIZE_SHORT;                                         \
          memcpy(&tmp_s, cur_p + pos, NET_SIZE_SHORT);                   \
          HH = ntohs(tmp_s);                                         \
          pos += NET_SIZE_SHORT;                                         \
          memcpy(&tmp_s, cur_p + pos, NET_SIZE_SHORT);                   \
          MM = ntohs(tmp_s);                                         \
          pos += NET_SIZE_SHORT;                                         \
          memcpy(&tmp_s, cur_p + pos, NET_SIZE_SHORT);                   \
          SS = ntohs(tmp_s);                                         \
        } while (0)

Definition at line 157 of file cas_network.h.

#define NET_DEFAULT_TIMEOUT   60

Definition at line 34 of file cas_network.h.

Referenced by cas_main(), process_request(), and shard_cas_main().

#define NET_MIN_TIMEOUT   2

Definition at line 33 of file cas_network.h.

Referenced by cas_main().

#define NET_SIZE_BIGINT   NET_SIZE_INT64

Definition at line 47 of file cas_network.h.

Referenced by add_res_data_bigint(), net_arg_get_bigint(), net_arg_get_size(), and net_buf_cp_bigint().

#define NET_SIZE_BYTE   ((int) sizeof(char))

Definition at line 41 of file cas_network.h.

Referenced by add_res_data_string(), net_buf_cp_byte(), net_buf_cp_cas_type_and_charset(), and proxy_io_make_end_tran_request().

#define NET_SIZE_DATE   (NET_SIZE_SHORT + NET_SIZE_SHORT + NET_SIZE_SHORT)

Definition at line 48 of file cas_network.h.

Referenced by add_res_data_date().

#define NET_SIZE_DATETIME   (NET_SIZE_SHORT * 7)

Definition at line 52 of file cas_network.h.

Referenced by add_res_data_datetime(), add_res_data_datetimetz(), and net_arg_get_datetimetz().

#define NET_SIZE_DOUBLE   ((int) sizeof(double))

Definition at line 45 of file cas_network.h.

Referenced by add_res_data_double(), net_arg_get_double(), and net_buf_cp_double().

#define NET_SIZE_FLOAT   ((int) sizeof(float))

Definition at line 44 of file cas_network.h.

Referenced by add_res_data_float(), net_arg_get_float(), and net_buf_cp_float().

#define NET_SIZE_INT   ((int) sizeof(int))

Definition at line 43 of file cas_network.h.

Referenced by add_res_data_bigint(), add_res_data_bytes(), add_res_data_date(), add_res_data_datetime(), add_res_data_datetimetz(), add_res_data_double(), add_res_data_float(), add_res_data_int(), add_res_data_lob_handle(), add_res_data_object(), add_res_data_short(), add_res_data_string(), add_res_data_time(), add_res_data_timestamp(), add_res_data_timestamptz(), dbval_to_net_buf(), fn_proxy_cas_prepare(), fn_proxy_cas_prepare_and_execute(), fn_proxy_cas_schema_info(), net_arg_get_bigint(), net_arg_get_cache_time(), net_arg_get_cci_object(), net_arg_get_date(), net_arg_get_datetime(), net_arg_get_datetimetz(), net_arg_get_double(), net_arg_get_float(), net_arg_get_int(), net_arg_get_lob_handle(), net_arg_get_object(), net_arg_get_short(), net_arg_get_size(), net_arg_get_str(), net_arg_get_time(), net_arg_get_timestamp(), net_arg_get_timestamptz(), net_arg_put_int(), net_buf_cp_int(), net_buf_cp_lob_handle(), net_buf_overwrite_int(), net_write_error(), netval_to_dbval(), proxy_has_different_column_info(), shard_stmt_save_prepare_request(), ux_lob_new(), and ux_lob_read().

#define NET_SIZE_INT64   ((int) sizeof(INT64))

Definition at line 46 of file cas_network.h.

Referenced by add_res_data_lob_handle(), net_arg_get_lob_handle(), net_buf_cp_lob_handle(), and ux_lob_new().

#define NET_SIZE_OBJECT   (NET_SIZE_INT + NET_SIZE_SHORT + NET_SIZE_SHORT)

Definition at line 50 of file cas_network.h.

Referenced by add_res_data_object(), and net_buf_cp_object().

#define NET_SIZE_SHORT   ((int) sizeof(short))

Definition at line 42 of file cas_network.h.

Referenced by add_res_data_short(), net_arg_get_cci_object(), net_arg_get_date(), net_arg_get_datetime(), net_arg_get_object(), net_arg_get_short(), net_arg_get_time(), net_arg_get_timestamp(), net_arg_get_timestamptz(), net_buf_cp_cas_type_and_charset(), and net_buf_cp_short().

#define NET_SIZE_TIME   (NET_SIZE_SHORT + NET_SIZE_SHORT + NET_SIZE_SHORT)

Definition at line 49 of file cas_network.h.

Referenced by add_res_data_time().

#define NET_SIZE_TIMESTAMP   (NET_SIZE_SHORT * 6)

Definition at line 51 of file cas_network.h.

Referenced by add_res_data_timestamp(), add_res_data_timestamptz(), and net_arg_get_timestamptz().

Function Documentation

void init_msg_header

(

MSG_HEADER *

header

)

Definition at line 358 of file cas_network.c.

References MSG_HEADER::buf, CAS_INFO_ADDITIONAL_FLAG, CAS_INFO_FLAG_MASK_NEW_SESSION_ID, CAS_INFO_RESERVED_1, CAS_INFO_RESERVED_2, CAS_INFO_RESERVED_DEFAULT, CAS_INFO_STATUS, CAS_INFO_STATUS_INACTIVE, MSG_HEADER::info_ptr, MSG_HEADER::msg_body_size_ptr, and MSG_HEADER_MSG_SIZE.

Referenced by cas_register_to_proxy(), process_request(), and proxy_init_net_buf().

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bool is_net_timed_out

(

void

)

Definition at line 699 of file cas_network.c.

References net_timeout_flag.

Referenced by net_read_header_keep_con_on(), net_read_int_keep_con_auto(), net_read_process(), net_read_stream(), and process_request().

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SOCKET net_connect_client

(

SOCKET

srv_sock_fd

)

Definition at line 260 of file cas_network.c.

References INVALID_SOCKET, IS_INVALID_SOCKET, and net_error_flag.

Referenced by cas_main().

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SOCKET net_connect_proxy

(

void

)

Definition at line 172 of file cas_network.c.

References as_info, t_shm_appl_server::broker_name, BROKER_PATH_MAX, broker_port, CLOSE_SOCKET, get_host_ip(), htons(), INVALID_SOCKET, IS_INVALID_SOCKET, net_error_flag, NULL, PORT_NUMBER_ENV_STR, t_appl_server_info::proxy_id, SHARD_ERR, shm_appl, strlen, strncpy_bufsize, ut_get_proxy_port_name(), and wsa_initialize().

Referenced by net_init_env(), and shard_cas_main().

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int net_decode_str	(	char *	msg,
		int	msg_size,
		char *	func_code,
		void ***	ret_argv
	)

Definition at line 393 of file cas_network.c.

References argc, argv, CAS_ER_COMMUNICATION, CAS_ER_NO_MORE_MEMORY, FREE_MEM, ntohl(), NULL, and REALLOC.

Referenced by process_request(), and proxy_handler_process_client_request().

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SOCKET net_init_env

(

char *

port_name

)

Definition at line 90 of file cas_network.c.

References CLOSE_SOCKET, htons(), INVALID_SOCKET, IS_INVALID_SOCKET, net_connect_proxy(), ntohs(), proxy_id, sock_addr_len, sock_fd, strlen, and wsa_initialize().

Referenced by cas_main().

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int net_read_header	(	SOCKET	sock_fd,
		MSG_HEADER *	header
	)

Definition at line 329 of file cas_network.c.

References MSG_HEADER::buf, cas_info_size, MSG_HEADER::msg_body_size_ptr, MSG_HEADER_SIZE, net_read_stream(), and ntohl().

Referenced by net_read_header_keep_con_on(), net_read_int_keep_con_auto(), net_read_process(), and process_request().

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int net_read_int	(	SOCKET	sock_fd,
		int *	value
	)

Definition at line 383 of file cas_network.c.

References net_read_stream(), and ntohl().

Referenced by cas_main().

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int net_read_stream	(	SOCKET	sock_fd,
		char *	buf,
		int	size
	)

Definition at line 305 of file cas_network.c.

References is_net_timed_out(), and read_buffer().

Referenced by cas_main(), net_read_header(), net_read_int(), and process_request().

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int net_read_to_file	(	SOCKET	sock_fd,
		int	file_size,
		char *	filename
	)

Definition at line 446 of file cas_network.c.

References CAS_ER_COMMUNICATION, CAS_ER_OPEN_FILE, CAS_ERROR_INDICATOR, ERROR_INFO_SET, and read_buffer().

void net_timeout_set

(

int

timeout_sec

)

Definition at line 519 of file cas_network.c.

References net_timeout, and new_req_sock_fd.

Referenced by cas_main(), net_read_header_keep_con_on(), net_read_int_keep_con_auto(), net_read_process(), process_request(), and shard_cas_main().

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void net_write_error	(	SOCKET	sock,
		int	version,
		char *	driver_info,
		char *	cas_info,
		int	cas_info_size,
		int	indicator,
		int	code,
		char *	msg
	)

Definition at line 717 of file cas_network.c.

References assert, CAS_CONV_ERROR_TO_OLD, cas_di_understand_renewed_error_code(), CAS_ER_NOT_AUTHORIZED_CLIENT, CAS_ERROR_INDICATOR, CAS_MAKE_VER, DOES_CLIENT_MATCH_THE_PROTOCOL, ERR_MSG_LENGTH, net_error_append_shard_info(), NET_SIZE_INT, net_write_int(), net_write_stream(), NO_ERROR, and PROTOCOL_V2.

Referenced by cas_main(), and process_request().

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int net_write_from_file	(	SOCKET	sock_fd,
		int	file_size,
		char *	filename
	)

Definition at line 482 of file cas_network.c.

References net_write_stream().

Referenced by process_request().

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int net_write_header	(	SOCKET	sock_fd,
		MSG_HEADER *	header
	)

Definition at line 347 of file cas_network.c.

References MSG_HEADER::buf, htonl(), MSG_HEADER::msg_body_size_ptr, MSG_HEADER_SIZE, and net_write_stream().

Referenced by cas_register_to_proxy().

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int net_write_int	(	SOCKET	sock_fd,
		int	value
	)

Definition at line 375 of file cas_network.c.

References htonl(), and write_buffer().

Referenced by cas_main(), cas_register_to_proxy(), and net_write_error().

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int net_write_stream	(	SOCKET	sock_fd,
		const char *	buf,
		int	size
	)

Definition at line 283 of file cas_network.c.

References write_buffer().

Referenced by cas_main(), cas_register_to_proxy(), cas_send_connect_reply_to_driver(), net_write_error(), net_write_from_file(), net_write_header(), and process_request().

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