Overview

When an SDK call fails, the result information is included in the cos_status_t structure returned by the API.

The correct way to use each API in the SDK is as follows. For the sake of brevity, the document includes only samples of API usage but not specific exception troubleshooting.

cos_status_t *s = NULL;
s = cos_put_object_from_file(options, &bucket, &object, &file, &headers, &resp_headers);
if (!s && !cos_status_is_ok(s)) {
        // Output logs of exceptions and process as needed
        cos_warn_log("failed to put object from file", buf);
        if (s->error_code) cos_warn_log("status->error_code: %s", s->error_code);
        if (s->error_msg) cos_warn_log("status->error_msg: %s", s->error_msg);
        if (s->req_id) cos_warn_log("status->req_id: %s", s->req_id);
}

Client Exceptions

When the code member value in the cos_status_t structure is below 0, an SDK client error has occurred. For the error codes and messages, see the definition of cos_error_code_e.

typedef enum {
        COSE_OK = 0,
        COSE_OUT_MEMORY = -1000,
        COSE_OVER_MEMORY = -999,
        COSE_FAILED_CONNECT = -998,
        COSE_ABORT_CALLBACK = -997,
        COSE_INTERNAL_ERROR = -996,
        COSE_REQUEST_TIMEOUT = -995,
        COSE_INVALID_ARGUMENT = -994,
        COSE_INVALID_OPERATION = -993,
        COSE_CONNECTION_FAILED = -992,
        COSE_FAILED_INITIALIZE = -991,
        COSE_NAME_LOOKUP_ERROR = -990,
        COSE_FAILED_VERIFICATION = -989,
        COSE_WRITE_BODY_ERROR = -988,
        COSE_READ_BODY_ERROR = -987,
        COSE_SERVICE_ERROR = -986,
        COSE_OPEN_FILE_ERROR = -985,
        COSE_FILE_SEEK_ERROR = -984,
        COSE_FILE_INFO_ERROR = -983,
        COSE_FILE_READ_ERROR = -982,
        COSE_FILE_WRITE_ERROR = -981,
        COSE_XML_PARSE_ERROR = -980,
        COSE_UTF8_ENCODE_ERROR = -979,
        COSE_CRC_INCONSISTENT_ERROR = -978,
        COSE_FILE_FLUSH_ERROR = -977,
        COSE_FILE_TRUNC_ERROR = -976,
        COSE_UNKNOWN_ERROR = -100
} cos_error_code_e;

Server Exceptions

When the code member value in the cos_status_t structure is above 0, a network error has occurred.

The cos_status_t structure is described as follows: