// mtype:
// 1 - client -> server
// 2 - server -> client
int main( int argc, char** argv )
{
int idx=0;
int mq_id=-1;
char seed = 'A';
static struct mq_message_s mq_message;
// init
memset( mq_message.content, '\0', MQ_MESSAGESIZ );
memset( mq_message.content_name, '\0', MQ_NAMESIZE );
strcpy( mq_message.content_name, "test" );
mq_message.content_type = MQDATA_STRING;
mq_message.needs_confirmation = 0;
mq_message.arr_extent = strlen( TEXT ) + 1;
strcpy( mq_message.content, TEXT );
// init
if( ERRCODE_SUCCESS != _mq_init( &mq_id, seed ) ){
perror( "_mq_init()" );
exit( ERRCODE_FAILURE );
}
do{
++idx;
// send hello
fprintf( stderr, "send \"%s\"\n", mq_message.content );
mq_message.mtype = 1;
if( ERRCODE_SUCCESS != _mq_send( mq_id, &mq_message, mq_message.mtype, 0 ) ){
perror( "_mq_send() failed" );
}
sleep( 1 );
// receive hello
mq_message.mtype = 2;
memset( mq_message.content, '\0', MQ_MESSAGESIZ );
fprintf( stderr, "cleared \"%s\"\n", mq_message.content );
_mq_retrieve( mq_id, &mq_message, mq_message.mtype, 0 );
fprintf( stderr, "received \"%s\"\n", ( (strlen( mq_message.content ) > 0) ? mq_message.content : "nothing" ) );
}while( 3 > idx );
exit( EXIT_SUCCESS );
}
static int _mq_connect(struct ipc *ipc, const char *name)
{//for client
struct mq_ctx *ctx = ipc->ctx;
struct mq_attr attr;
ctx->parent = ipc;
attr.mq_flags = 0;
attr.mq_maxmsg = MQ_MAXMSG;
attr.mq_msgsize = MQ_MSGSIZE;
attr.mq_curmsgs = 0;
int wflag = O_WRONLY | O_EXCL;
ctx->mq_wr = mq_open(name, wflag, S_IRWXU | S_IRWXG, &attr);
if (ctx->mq_wr < 0) {
loge("mq_open %s failed: %d:%s\n", name, errno, strerror(errno));
return -1;
}
strncpy(ctx->mq_wr_name, name, sizeof(ctx->mq_wr_name));
if (0 > _mq_send(ipc, ctx->mq_rd_name, strlen(ctx->mq_rd_name))) {
loge("_mq_send failed!\n");
return -1;
}
struct timeval now;
struct timespec abs_time;
uint32_t timeout = 5000;//msec
gettimeofday(&now, NULL);
/* Add our timeout to current time */
now.tv_usec += (timeout % 1000) * 1000;
now.tv_sec += timeout / 1000;
/* Wrap the second if needed */
if ( now.tv_usec >= 1000000 ) {
now.tv_usec -= 1000000;
now.tv_sec ++;
}
/* Convert to timespec */
abs_time.tv_sec = now.tv_sec;
abs_time.tv_nsec = now.tv_usec * 1000;
if (-1 == sem_timedwait(&ctx->sem, &abs_time)) {
loge("connect %s failed %d: %s\n", name, errno, strerror(errno));
return -1;
}
return 0;
}
static int _mq_accept(struct ipc *ipc)
{//for server
struct mq_ctx *ctx = ipc->ctx;
ctx->parent = ipc;
struct mq_attr attr;
attr.mq_flags = 0;
attr.mq_maxmsg = MQ_MAXMSG;
attr.mq_msgsize = MQ_MSGSIZE;
attr.mq_curmsgs = 0;
sem_wait(&ctx->sem);
ctx->mq_wr = mq_open(ctx->mq_wr_name, O_WRONLY, S_IRWXU | S_IRWXG, &attr);
if (ctx->mq_wr < 0) {
loge("mq_open %s failed: %d:%s\n", ctx->mq_wr_name, errno, strerror(errno));
return -1;
}
if (0 > _mq_send(ipc, ctx->mq_wr_name, strlen(ctx->mq_wr_name))) {
loge("_mq_send failed!\n");
return -1;
}
return 0;
}
