使用 MQOPEN 方法 PRO*C 调用远程 mq 时出现 mqrc 2018 错误

Question

我正在尝试使用 pro*c 语言连接远程 MQ，在连接到 MQ 时我正在使用 MQCONNX 和 MQOPEN 方法，
执行 MQOPEN 方法后 returns 错误 MQRC 2018.
以下代码供参考
还想知道是否存在任何类型的身份验证问题或服务器级别问题导致此问题，因为使用不同方法的相同代码在连接到本地 MQ 客户端时工作正常。

谢谢

int MS_MQ_Open(const char *chr_p_qmname, const char *chr_p_qname,
               const char *mode, MQHCONN *Hcon, MQHOBJ *Hobj,
               INTL_ENV_DATA_STRUCT_H *p_intlenv_data_struct_h,
               DEBUG_INFO_STRUCT_H **l_debug_info_ptr) {
  MQOD od = {MQOD_DEFAULT}; /* Object Descriptor             */
  MQLONG OpenCode;          /* MQOPEN completion code        */
  MQLONG O_options;
  MQLONG Reason;
  MQLONG CReason;
  MQLONG CompCode;
  MQCNO mqcno = {MQCNO_DEFAULT};          /* Connection options */
  MQCD mqcd = {MQCD_CLIENT_CONN_DEFAULT}; /* Channel Defs */
  MQCSP csp = {MQCSP_DEFAULT};
  MQCHAR chr_l_qmname[MQ_Q_MGR_NAME_LENGTH];
  char userId[50];
  char password[50];
  strncpy(userId, "XXXXXX", 50);
  strncpy(chr_l_qmname, chr_p_qmname, MQ_Q_MGR_NAME_LENGTH);
  strncpy(mqcd.ConnectionName, "10.000.00.00(port number)",
          MQ_CONN_NAME_LENGTH);
  strncpy(mqcd.ChannelName, "SVRCONN", MQ_CHANNEL_NAME_LENGTH);
  mqcno.SecurityParmsPtr = &csp;
  mqcno.Version = MQCNO_VERSION_5;
  csp.AuthenticationType = MQCSP_AUTH_USER_ID_AND_PWD;
  csp.CSPUserIdPtr = userId;
  csp.CSPUserIdOffset = 0;
  csp.CSPUserIdLength = strlen(userId);
  strncpy(password, "XXXX", 50);
  csp.CSPPasswordPtr = password;
  csp.CSPPasswordOffset = 0;
  csp.CSPPasswordLength = strlen(password);
  mqcno.ClientConnPtr = &mqcd;
  mqcno.Version = MQCNO_VERSION_5;

  MQCONNX(chr_l_qmname, &mqcno, &Hcon, &CompCode, &CReason);
  if (CompCode == MQCC_FAILED) {
    printf("MQCONNX ended with reason code |%ld|\n", CReason);
  }
  strncpy(od.ObjectName, chr_p_qname, (size_t)MQ_Q_NAME_LENGTH);
  if (!strcmp(mode, "I")) {
    O_options = MQOO_INQUIRE + MQOO_FAIL_IF_QUIESCING;
  } else if (!strcmp(mode, "O")) {
    O_options = MQOO_OUTPUT /* open queue for output        */
                + MQOO_FAIL_IF_QUIESCING +
                MQOO_SET_ALL_CONTEXT; /* but not if MQM stopping      */
  } else {
    printf("Invalid mode %s\n", mode);
    APL_GOBACK_FAIL
  }
  MQOPEN(Hcon, &od, O_options, &Hobj, &OpenCode, &Reason);
  if (Reason != MQRC_NONE) {
    printf("MQOPEN ended with reason code |%ld|\n", Reason);
  }
}

Answer 1

MQ 原因代码 2018 (MQRC_HCONN_ERROR) 表示您的 Hcon 参数不正确。您的代码测试 CompCode 是否为 MQCC_FAILED，但不检查 MQCC_WARNING。我建议您将此测试更改为以下内容：-

if (CompCode != MQCC_OK) {
  printf("MQCONNX ended with reason code |%ld|\n", CReason);
}

您可能运行进入少数 MQCC_WARNING reason codes 之一，并且 Hcon 未设置为您命中的那个。

好的做法是在调用 MQCONN 或 MQCONNX 之前将 Hcon 参数设置为值 MQHC_UNUSABLE_HCONN，然后测试是否不再设置 Hcon 参数在调用 MQOPEN 之类的东西之前将该值。这意味着您可以确定您的 MQCONN(X) 调用将 Hcon 参数设置为不应导致 2018.

的参数

if (Hcon != MQHC_UNUSABLE_HCONN)
{
  MQOPEN(Hcon, &od, O_options, &Hobj, &OpenCode, &Reason);
  if (Reason != MQRC_NONE) {
    printf("MQOPEN ended with reason code |%ld|\n", Reason);
  }
}

使用 MQOPEN 方法 PRO*C 调用远程 mq 时出现 mqrc 2018 错误

mqrc 2018 error while call is made to remote mq using MQOPEN method PRO*C

c

mq

oracle-pro-c

ibm-mq