Configuring option

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When the function of C SDK is called, obs_options must be input. You can use function init_obs_options to initialize configurations for obs_options, and configure AK, SK, endpoint, bucket, timeout period, and temporary authentication by using obs_options. obs_options consists of obs_bucket_context and obs_http_request_option. The following table describes the parameters that can be set.

**Table 1** obs_options.obs_bucket_context parameters
Parameter	Description	Default Value	Recommended Value
host_name	The requested host name, which is the domain name (the endpoint) of the server where the requested resource is stored.	NULL	-
bucket_name	Name of the bucket where the operation is performed	NULL	-
protocol	The protocol used for sending requests. Possible values include HTTP and HTTPS. For security purposes, you are advised to use HTTPS.	HTTPS protocol: OBS_PROTOCOL_HTTPS	OBS_PROTOCOL_HTTPS
access_key	AK of OBS	NULL	-
secret_access_key	SK used for authentication. It can be used to sign a character string.	NULL	-
obs_storage_class	Set this parameter when the storage class needs to be configured in the PUT or POST request.	OBS Standard: OBS_STORAGE_CLASS_STANDARD	Default value
token	Security token of the temporary access key	NULL	-
bucket_type	Specifies whether a bucket is an object bucket or a parallel file system.	Bucket for object storage: OBS_BUCKET_OBJECT	-
bucket_list_type	Specifies whether to list all buckets, object buckets, or parallel file systems.	All buckets: OBS_BUCKET_LIST_ALL	-

**Table 2** obs_options.obs_http_request_option parameters
Parameter	Description	Default Value	Recommended Value
connect_time	Timeout period for establishing an HTTP/HTTPS connection, in ms. The default value is 60,000.	60000	10000 to 60000
max_connected_time	Timeout period (in seconds) of an HTTP/HTTPS request. The value 0 indicates that the link is never disconnected.	0	0
proxy_auth	Proxy authentication information, in the format of Username:Password	NULL	-
proxy_host	Proxy server	NULL	-