My C with MQ receive a message return code 2037 - c

Question

I run the C program, which connect to MQ and try to get a message from it. I always get a message:
MQGET ended with reason code 2037
which means that MQ is not opened, but MQOPEN CC=0 RC=0
MQ error log is empty.
this is the program
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <cmqc.h> /* includes for MQI*/
#include <cmqxc.h>
int main(int argc, char **argv)
{
MQCNO Connect_options = {MQCNO_DEFAULT};/MQNONNX opt*/
MQCD ClientConn = {MQCD_CLIENT_CONN_DEFAULT};/*client channel*/
MQHCONN Hcon; /* connection handle */
MQHOBJ Hobj; /* object handle */
MQLONG CompCode; /* completion code */
MQLONG OpenCode; /* MQOPEN completion code*/
MQLONG Reason; /* reason code */
MQOD od = {MQOD_DEFAULT}; /* Object Descriptor */
MQMD md = {MQMD_DEFAULT}; /* Message Descriptor */
MQPMO pmo = {MQPMO_DEFAULT}; /* put message options*/
MQLONG O_options; /* MQOPEN options */
MQLONG C_options; /* MQCLOSE options */
MQGMO gmo = {MQGMO_DEFAULT}; /* get message options */
char QMgrName[MQ_Q_MGR_NAME_LENGTH+1];
char QName[MQ_Q_NAME_LENGTH+1];
char channelName[MQ_CHANNEL_NAME_LENGTH+1];
char hostname[1024];
char port[4];
MQLONG buflen; /* buffer length*/
char TempBuf[65536];
int msgsToGet;
int msgsGot;
if (argc != 6)
{
printf("Usage: MQTest11 QMgrName ChlName hostname port QName\n");
return(1);
}
**/* copy MQ manager name */**
strncpy(QMgrName, argv[1], MQ_Q_MGR_NAME_LENGTH);
QMgrName[MQ_Q_MGR_NAME_LENGTH] = '\0';
**/* copy channel name */**
strncpy(channelName, argv[2], MQ_CHANNEL_NAME_LENGTH);
channelName[MQ_CHANNEL_NAME_LENGTH] = '\0';
**/* copy hostname */**
strncpy(hostname, argv[3], 1023);
hostname[1023] = '\0';
**/* copy port number */**
strncpy(port,argv[4],4);
strncpy(QName, argv[5], MQ_Q_NAME_LENGTH);
QName[MQ_Q_NAME_LENGTH] = '\0';
**/* copy hostname for connection */**
strncpy(ClientConn.ConnectionName,hostname, MQ_CONN_NAME_LENGTH);
**/* copy channel name */**
strncpy(ClientConn.ChannelName,channelName,MQ_CHANNEL_NAME_LENGTH);
**/* Point the MQCNO to the client connection definition */**
Connect_options.ClientConnPtr = &ClientConn;
Connect_options.Version = MQCNO_VERSION_2;
**/* use MQCONNX */**
if (CompCode == MQCC_FAILED)
{
/* exit with print the reason */
}
else
{
strncpy(od.ObjectName, QName, (size_t)MQ_Q_NAME_LENGTH);
O_options = MQOO_OUTPUT + MQOO_FAIL_IF_QUIESCING;
MQOPEN(Hcon, /* connection handle */
&od, /* object descriptor for queue */
O_options, /* open options */
&Hobj, /* object handle */
&OpenCode, /* MQOPEN completion code */
&Reason); /* reason code */
printf("MQTest11 MQOPEN CC=%ld RC=%ld\n", CompCode, Reason);
if (OpenCode == MQCC_OK) /* if MQOPEN , then continue in the while loop */
{
gmo.Options = MQGMO_WAIT + MQGMO_CONVERT;
gmo.WaitInterval = 15000;
msgsGot = 0;
msgsToGet = 0;
CompCode = OpenCode;
}
while (CompCode != MQCC_FAILED && ((msgsToGet == 0) || (msgsGot < msgsToGet)))
{
/* define length of the buffer -1 */
buflen = strlen(TempBuf) - 1; */ buffer length */
memcpy(md.MsgId, MQMI_NONE, sizeof(md.MsgId)); /*copy msg ID*/
memcpy(md.CorrelId, MQCI_NONE, sizeof(md.CorrelId));/*copy corrlID*/
md.Encoding = MQENC_NATIVE; /*encode*/
md.CodedCharSetId = MQCCSI_Q_MGR;
/* function to get message from MQ*/
MQGET(Hcon, /* get message from MQ */
Hobj, /* object handle*/
&md, /* message descriptor*/
&gmo, /*get message options*/
buflen, /*buffer length*/
TempBuf, /* buffer */
&messlen, /* message length*/
&CompCode, /* completion code*/
&Reason); /* reason code*/
**/* I put some statements to check if transaction failed or not*/**
if (Reason != MQRC_NONE)
{
if (Reason == MQRC_NO_MSG_AVAILABLE)
{
/* print statement no more messages */
else
{
printf("MQGET ended with reason code %d comcode %d\n",Reason,CompCode);
if (Reason == MQRC_TRUNCATED_MSG_FAILED)
{
/print statement that it is failed*/
}
}
}
**This is almost done, only statement if Compcode not failed, then print buffer**
I have changed char TempBuf declaration to MQBYTE and it is not help

Answer 1

MQRC 2037 is MQRC_NOT_OPEN_FOR_INPUT, you can find this information by running the mqrc command provided with the IBM MQ Client or server install, below is a sample output on a Linux server:
$ mqrc 2037
2037 0x000007f5 MQRC_NOT_OPEN_FOR_INPUT
You do not show the MQOPEN call but if it is using the O_options, it would be explained by this, you currently have the following:
O_options = MQOO_OUTPUT + MQOO_FAIL_IF_QUIESCING;
This should someing like the following:
O_options = MQOO_INPUT_AS_Q_DEF + MQOO_FAIL_IF_QUIESCING;
I would suggested that you review the sample applications provided with the IBM MQ install. On Linux these would be located in /opt/mqm/samp. The sample amqsget0.c would be similar to your program except it is using a MQCONN not MQCONNX.