付録H.1 コーディング例
使用するメッセージの種類ごとにUAPのコーディング例を示します。
- 〈この項の構成〉
(1) メッセージ受信処理とユニキャストメッセージ送信（UAP1）
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <dcmcf.h>
#include <dcmudpu.h>
#define SEND_ADDR 0xC20B2A15 /* 0xC20B2A15 == 194.11.42.21 */
#define BRD_PORT 0x4E2A /* 0x4E2A == 20010 */
#define MLT_PORT 0x4E2B /* 0x4E2B == 20011 */
#define UNI_PORT 0x4E2C /* 0x4E2C == 20012 */
#define SRV_MSGSIZE 480
typedef struct srvmsg_s{
char mcfarea[8]; /* 8bytes == DCMCFBUF1 */
dcmudp_dc_header dchead; /* 24bytes */
char srv_msg[SRV_MSGSIZE]; /* 480bytes == SRV_MSGSIZE */
} srvmsg_def; /* 512bytes */
void ex_uap1() {
DCLONG action;
static DCLONG commform = DCNOFLAGS;
char termnam[16];
static char resv01[16] = "\0";
static char resv02[16] = "\0";
srvmsg_def srvdata_area;
char *recvdata;
char *senddata;
DCLONG sdataleng;
DCLONG rdataleng;
DCLONG inbufleng;
static DCLONG opcd = DCNOFLAGS;
static DCLONG watchtime = -1;
DCLONG time;
int rtn;
recvdata = (char *)&srvdata_area;
senddata = (char *)&srvdata_area;
(void)memset((void *)&srvdata_area,
0x00,
sizeof(srvdata_area));
action = DCMCFFRST;
inbufleng = sizeof(srvdata_area);
rtn = dc_mcf_receive(action,
commform,
termnam,
resv01,
recvdata,
&rdataleng,
inbufleng,
&time);
if( DCMCFRTN_00000 == rtn ) {
if( SEND_ADDR == ntohl(srvdata_area.dchead.r_ipaddr) ) {
switch( ntohs(srvdata_area.dchead.r_portno) ) {
case BRD_PORT:
/***********************************************/
/* User Service Part. */
/***********************************************/
break;
case MLT_PORT:
/***********************************************/
/* User Service Part. */
/***********************************************/
break;
case UNI_PORT:
/***********************************************/
/* User Service Part. */
/***********************************************/
action = DCMCFEMI;
sdataleng = rdataleng;
rtn = dc_mcf_sendsync(action,
commform,
termnam,
resv01,
senddata,
sdataleng,
resv02,
opcd,
watchtime);
if( DCMCFRTN_00000 == rtn) {
/*******************************************/
/* User Service Part. */
/*******************************************/
} else {
/*******************************************/
/* User Service Part. */
/*******************************************/
}
break;
default:
/***********************************************/
/* User Service Part. */
/***********************************************/
break;
}
} else {
/***********************************************/
/* User Service Part. */
/***********************************************/
}
} else {
/************************************************/
/* User Service Part. */
/************************************************/
}
return;
}
(2) ユニキャストメッセージ送信（UAP2）
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <dcmcf.h>
#include <dcmudpu.h>
#define SEND_ADDR 0xC20B2A16 /* 0xC20B2A16 == 194.11.42.22 */
#define SEND_PORT 0x4E2D /* 0x4E2D == 20013 */
#define SRV_MSGSIZE 480
typedef struct srvmsg_s{
char mcfarea[8]; /* 8bytes == DCMCFBUF1 */
dcmudp_dc_header dchead; /* 24bytes */
char srv_msg[SRV_MSGSIZE]; /* 480bytes == SRV_MSGSIZE */
} srvmsg_def; /* 512bytes */
void ex_uap2() {
static DCLONG action = DCMCFEMI;
static DCLONG commform = DCNOFLAGS;
static char *termnam = "leid04";
static char resv01[16] = "\0";
static char resv02[16] = "\0";
static DCLONG opcd = DCNOFLAGS;
static DCLONG watchtime = -1;
char *senddata;
srvmsg_def senddata_area;
DCLONG sdataleng;
int rtn;
senddata = (char *)&senddata_area;
(void)memset((void *)&senddata_area,
0x00,
(size_t)sizeof(senddata_area));
/************************************************/
/* User Service Part. */
/************************************************/
sdataleng = sizeof(senddata_area)
- sizeof(senddata_area.mcfarea);
senddata_area.dchead.r_ipaddr = htonl(SEND_ADDR);
senddata_area.dchead.r_portno = htons(SEND_PORT);
rtn = dc_mcf_sendsync(action,
commform,
termnam,
resv01,
senddata,
sdataleng,
resv02,
opcd,
watchtime);
if( DCMCFRTN_00000 == rtn) {
/************************************************/
/* User Service Part. */
/************************************************/
} else {
/************************************************/
/* User Service Part. */
/************************************************/
}
return;
}
(3) ブロードキャストメッセージ送信（UAP3）
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <dcmcf.h>
#include <dcmudpu.h>
#define SEND_PORT 0x4E2E /* 0x4E2E == 20014 */
#define SRV_MSGSIZE 480
typedef struct srvmsg_s{
char mcfarea[8]; /* 8bytes == DCMCFBUF1 */
dcmudp_dc_header dchead; /* 24bytes */
char srv_msg[SRV_MSGSIZE]; /* 480bytes == SRV_MSGSIZE */
} srvmsg_def; /* 512bytes */
void ex_uap3(){
static DCLONG action = DCMCFEMI;
static DCLONG commform = DCNOFLAGS;
static char *termnam = "leid05";
static char resv01[16] = "\0";
static char resv02[16] = "\0";
static DCLONG opcd = DCNOFLAGS;
static DCLONG watchtime = -1;
char *senddata;
srvmsg_def senddata_area;
DCLONG sdataleng;
int rtn;
senddata = (char *)&senddata_area;
(void)memset((void *)&senddata_area,
0x00,
sizeof(senddata_area));
/************************************************/
/* User Service Part. */
/************************************************/
sdataleng = sizeof(senddata_area)
- sizeof(senddata_area.mcfarea);
senddata_area.dchead.r_ipaddr = htonl(INADDR_BROADCAST);
senddata_area.dchead.r_portno = htons(SEND_PORT);
rtn = dc_mcf_sendsync(action,
commform,
termnam,
resv01,
senddata,
sdataleng,
resv02,
opcd,
watchtime);
if( DCMCFRTN_00000 == rtn) {
/************************************************/
/* User Service Part. */
/************************************************/
} else {
/************************************************/
/* User Service Part. */
/************************************************/
}
return;
}
(4) マルチキャストメッセージ送信（UAP4）
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <dcmcf.h>
#include <dcmudpu.h>
#define SEND_ADDR 0xE0010203 /* 0xE0010203 == 224.1.2.3 */
#define SEND_PORT 0x4E2F /* 0x4E2F == 20015 */
#define SRV_MSGSIZE 480
typedef struct srvmsg_s{
char mcfarea[8]; /* 8bytes == DCMCFBUF1 */
dcmudp_dc_header dchead; /* 24bytes */
char srv_msg[SRV_MSGSIZE]; /* 480bytes == SRV_MSGSIZE */
} srvmsg_def; /* 512bytes */
void ex_uap4() {
static DCLONG action = DCMCFEMI;
static DCLONG commform = DCNOFLAGS;
static char *termnam = "leid06";
static char resv01[16] = "\0";
static char resv02[16] = "\0";
static DCLONG opcd = DCNOFLAGS;
static DCLONG watchtime = -1;
char *senddata;
srvmsg_def senddata_area;
DCLONG sdataleng;
int rtn;
senddata = (char *)&senddata_area;
(void)memset((void *)&senddata_area,
0x00,
(size_t)sizeof(senddata_area));
/************************************************/
/* User Service Part. */
/************************************************/
sdataleng = sizeof(senddata_area)
- sizeof(senddata_area.mcfarea);
senddata_area.dchead.r_ipaddr = htonl(SEND_ADDR);
senddata_area.dchead.r_portno = htons(SEND_PORT);
rtn = dc_mcf_sendsync(action,
commform,
termnam,
resv01,
senddata,
sdataleng,
resv02,
opcd,
watchtime);
if( DCMCFRTN_00000 == rtn) {
/************************************************/
/* User Service Part. */
/************************************************/
} else {
/************************************************/
/* User Service Part. */
/************************************************/
}
return;
}