| TSHTTPOVERRIDABLECONFIG(3ts) | Apache Traffic Server | TSHTTPOVERRIDABLECONFIG(3ts) |
TSHttpOverridableConfig - TSHttpOverridableConfig API function
#include <ts/ts.h>
Some of the values that are set in records.config can be changed for a specific transaction. It is important to note that these functions change the configuration values stored for the transaction, which is not quite the same as changing the actual operating values of the transaction. The critical effect is the value must be changed before it is used by the transaction - after that, changes will not have any effect.
All of the ...Get functions store the internal value in the storage indicated by the value argument. For strings length* will receive the length of the string.
The values are identified by the enumeration TSOverridableConfigKey. String values can be used indirectly by first passing them to TSHttpTxnConfigFind() which, if the string matches an overridable value, return the key and data type.
Testing TS_CONFIG_BODY_FACTORY_TEMPLATE_BASE.
The following configurations (from records.config) are overridable:
| TSOverridableConfigKey Value | Configuration Value |
| TS_CONFIG_BODY_FACTORY_TEMPLATE_BASE | proxy.config.body_factory.template_base |
| TS_CONFIG_HTTP_ALLOW_HALF_OPEN | proxy.config.http.allow_half_open |
| TS_CONFIG_HTTP_ALLOW_MULTI_RANGE | proxy.config.http.allow_multi_range |
| TS_CONFIG_HTTP_ANONYMIZE_INSERT_CLIENT_IP | proxy.config.http.insert_client_ip |
| TS_CONFIG_HTTP_ANONYMIZE_REMOVE_CLIENT_IP | proxy.config.http.anonymize_remove_client_ip |
| TS_CONFIG_HTTP_ANONYMIZE_REMOVE_COOKIE | proxy.config.http.anonymize_remove_cookie |
| TS_CONFIG_HTTP_ANONYMIZE_REMOVE_FROM | proxy.config.http.anonymize_remove_from |
| TS_CONFIG_HTTP_ANONYMIZE_REMOVE_REFERER | proxy.config.http.anonymize_remove_referer |
| TS_CONFIG_HTTP_ANONYMIZE_REMOVE_USER_AGENT | proxy.config.http.anonymize_remove_user_agent |
| TS_CONFIG_HTTP_ATTACH_SERVER_SESSION_TO_CLIENT | proxy.config.http.attach_server_session_to_client |
| TS_CONFIG_HTTP_MAX_PROXY_CYCLES | proxy.config.http.max_proxy_cycles |
| TS_CONFIG_HTTP_AUTH_SERVER_SESSION_PRIVATE | proxy.config.http.auth_server_session_private |
| TS_CONFIG_HTTP_BACKGROUND_FILL_ACTIVE_TIMEOUT | proxy.config.http.background_fill_active_timeout |
| TS_CONFIG_HTTP_BACKGROUND_FILL_COMPLETED_THRESHOLD | proxy.config.http.background_fill_completed_threshold |
| TS_CONFIG_HTTP_CACHE_CACHE_RESPONSES_TO_COOKIES | proxy.config.http.cache.cache_responses_to_cookies |
| TS_CONFIG_HTTP_CACHE_CACHE_URLS_THAT_LOOK_DYNAMIC | proxy.config.http.cache.cache_urls_that_look_dynamic |
| TS_CONFIG_HTTP_CACHE_GENERATION | proxy.config.http.cache.generation |
| TS_CONFIG_HTTP_CACHE_GUARANTEED_MAX_LIFETIME | proxy.config.http.cache.guaranteed_max_lifetime |
| TS_CONFIG_HTTP_CACHE_GUARANTEED_MIN_LIFETIME | proxy.config.http.cache.guaranteed_min_lifetime |
| TS_CONFIG_HTTP_CACHE_HEURISTIC_LM_FACTOR | proxy.config.http.cache.heuristic_lm_factor |
| TS_CONFIG_HTTP_CACHE_HEURISTIC_MAX_LIFETIME | proxy.config.http.cache.heuristic_max_lifetime |
| TS_CONFIG_HTTP_CACHE_HEURISTIC_MIN_LIFETIME | proxy.config.http.cache.heuristic_min_lifetime |
| TS_CONFIG_HTTP_CACHE_HTTP | proxy.config.http.cache.http |
| TS_CONFIG_HTTP_CACHE_IGNORE_ACCEPT_CHARSET_MISMATCH | proxy.config.http.cache.ignore_accept_charset_mismatch |
| TS_CONFIG_HTTP_CACHE_IGNORE_ACCEPT_ENCODING_MISMATCH | proxy.config.http.cache.ignore_accept_encoding_mismatch |
| TS_CONFIG_HTTP_CACHE_IGNORE_ACCEPT_LANGUAGE_MISMATCH | proxy.config.http.cache.ignore_accept_language_mismatch |
| TS_CONFIG_HTTP_CACHE_IGNORE_ACCEPT_MISMATCH | proxy.config.http.cache.ignore_accept_mismatch |
| TS_CONFIG_HTTP_CACHE_IGNORE_AUTHENTICATION | proxy.config.http.cache.ignore_authentication |
| TS_CONFIG_HTTP_CACHE_IGNORE_CLIENT_CC_MAX_AGE | proxy.config.http.cache.ignore_client_cc_max_age |
| TS_CONFIG_HTTP_CACHE_IGNORE_CLIENT_NO_CACHE | proxy.config.http.cache.ignore_client_no_cache |
| TS_CONFIG_HTTP_CACHE_IGNORE_SERVER_NO_CACHE | proxy.config.http.cache.ignore_server_no_cache |
| TS_CONFIG_HTTP_CACHE_IMS_ON_CLIENT_NO_CACHE | proxy.config.http.cache.ims_on_client_no_cache |
| TS_CONFIG_HTTP_CACHE_MAX_OPEN_READ_RETRIES | proxy.config.http.cache.max_open_read_retries |
| TS_CONFIG_HTTP_CACHE_MAX_OPEN_WRITE_RETRIES | proxy.config.http.cache.max_open_write_retries |
| TS_CONFIG_HTTP_CACHE_MAX_STALE_AGE | proxy.config.http.cache.max_stale_age |
| TS_CONFIG_HTTP_CACHE_OPEN_READ_RETRY_TIME | proxy.config.http.cache.open_read_retry_time |
| TS_CONFIG_HTTP_CACHE_OPEN_WRITE_FAIL_ACTION | proxy.config.http.cache.open_write_fail_action |
| TS_CONFIG_HTTP_CACHE_RANGE_LOOKUP | proxy.config.http.cache.range.lookup |
| TS_CONFIG_HTTP_CACHE_RANGE_WRITE | proxy.config.http.cache.range.write |
| TS_CONFIG_HTTP_CACHE_REQUIRED_HEADERS | proxy.config.http.cache.required_headers |
| TS_CONFIG_HTTP_CACHE_WHEN_TO_REVALIDATE | proxy.config.http.cache.when_to_revalidate |
| TS_CONFIG_HTTP_CHUNKING_ENABLED | proxy.config.http.chunking_enabled |
| TS_CONFIG_HTTP_CHUNKING_SIZE | proxy.config.http.chunking.size |
| TS_CONFIG_HTTP_CONNECT_ATTEMPTS_MAX_RETRIES_DEAD_SERVER | proxy.config.http.connect_attempts_max_retries_dead_server |
| TS_CONFIG_HTTP_CONNECT_ATTEMPTS_MAX_RETRIES | proxy.config.http.connect_attempts_max_retries |
| TS_CONFIG_HTTP_CONNECT_ATTEMPTS_RR_RETRIES | proxy.config.http.connect_attempts_rr_retries |
| TS_CONFIG_HTTP_CONNECT_ATTEMPTS_TIMEOUT | proxy.config.http.connect_attempts_timeout |
| TS_CONFIG_HTTP_DEFAULT_BUFFER_SIZE | proxy.config.http.default_buffer_size |
| TS_CONFIG_HTTP_DEFAULT_BUFFER_WATER_MARK | proxy.config.http.default_buffer_water_mark |
| TS_CONFIG_HTTP_DOC_IN_CACHE_SKIP_DNS | proxy.config.http.doc_in_cache_skip_dns |
| TS_CONFIG_HTTP_DOWN_SERVER_CACHE_TIME | proxy.config.http.down_server.cache_time |
| TS_CONFIG_HTTP_FLOW_CONTROL_ENABLED | proxy.config.http.flow_control.enabled |
| TS_CONFIG_HTTP_FLOW_CONTROL_HIGH_WATER_MARK | proxy.config.http.flow_control.high_water |
| TS_CONFIG_HTTP_FLOW_CONTROL_LOW_WATER_MARK | proxy.config.http.flow_control.low_water |
| TS_CONFIG_HTTP_FORWARD_CONNECT_METHOD | proxy.config.http.forward_connect_method |
| TS_CONFIG_HTTP_FORWARD_PROXY_AUTH_TO_PARENT | proxy.config.http.forward.proxy_auth_to_parent |
| TS_CONFIG_HTTP_GLOBAL_USER_AGENT_HEADER | proxy.config.http.global_user_agent_header |
| TS_CONFIG_HTTP_INSERT_AGE_IN_RESPONSE | proxy.config.http.insert_age_in_response |
| TS_CONFIG_HTTP_INSERT_FORWARDED | proxy.config.http.insert_forwarded |
| TS_CONFIG_HTTP_INSERT_REQUEST_VIA_STR | proxy.config.http.insert_request_via_str |
| TS_CONFIG_HTTP_INSERT_RESPONSE_VIA_STR | proxy.config.http.insert_response_via_str |
| TS_CONFIG_HTTP_INSERT_SQUID_X_FORWARDED_FOR | proxy.config.http.insert_squid_x_forwarded_for |
| TS_CONFIG_HTTP_KEEP_ALIVE_ENABLED_IN | proxy.config.http.keep_alive_enabled_in |
| TS_CONFIG_HTTP_KEEP_ALIVE_ENABLED_OUT | proxy.config.http.keep_alive_enabled_out |
| TS_CONFIG_HTTP_KEEP_ALIVE_NO_ACTIVITY_TIMEOUT_IN | proxy.config.http.keep_alive_no_activity_timeout_in |
| TS_CONFIG_HTTP_KEEP_ALIVE_NO_ACTIVITY_TIMEOUT_OUT | proxy.config.http.keep_alive_no_activity_timeout_out |
| TS_CONFIG_HTTP_KEEP_ALIVE_POST_OUT | proxy.config.http.keep_alive_post_out |
| TS_CONFIG_HTTP_NEGATIVE_CACHING_ENABLED | proxy.config.http.negative_caching_enabled |
| TS_CONFIG_HTTP_NEGATIVE_CACHING_LIFETIME | proxy.config.http.negative_caching_lifetime |
| TS_CONFIG_HTTP_NEGATIVE_REVALIDATING_ENABLED | proxy.config.http.negative_revalidating_enabled |
| TS_CONFIG_HTTP_NEGATIVE_REVALIDATING_LIFETIME | proxy.config.http.negative_revalidating_lifetime |
| TS_CONFIG_HTTP_NORMALIZE_AE | proxy.config.http.normalize_ae |
| TS_CONFIG_HTTP_NUMBER_OF_REDIRECTIONS | proxy.config.http.number_of_redirections |
| TS_CONFIG_HTTP_PARENT_CONNECT_ATTEMPT_TIMEOUT | proxy.config.http.parent_proxy.connect_attempts_timeout |
| TS_CONFIG_HTTP_PARENT_PROXY_FAIL_THRESHOLD | proxy.config.http.parent_proxy.fail_threshold |
| TS_CONFIG_HTTP_PARENT_PROXY_RETRY_TIME | proxy.config.http.parent_proxy.retry_time |
| TS_CONFIG_HTTP_PARENT_PROXY_TOTAL_CONNECT_ATTEMPTS | proxy.config.http.parent_proxy.total_connect_attempts |
| TS_CONFIG_HTTP_PER_PARENT_CONNECT_ATTEMPTS | proxy.config.http.parent_proxy.per_parent_connect_attempts |
| TS_CONFIG_HTTP_PER_SERVER_CONNECTION_MATCH | proxy.config.http.per_server.connection.match |
| TS_CONFIG_HTTP_PER_SERVER_CONNECTION_MAX | proxy.config.http.per_server.connection.max |
| TS_CONFIG_HTTP_POST_CHECK_CONTENT_LENGTH_ENABLED | proxy.config.http.post.check.content_length.enabled |
| TS_CONFIG_HTTP_POST_CONNECT_ATTEMPTS_TIMEOUT | proxy.config.http.post_connect_attempts_timeout |
| TS_CONFIG_HTTP_REDIRECT_USE_ORIG_CACHE_KEY | proxy.config.http.redirect_use_orig_cache_key |
| TS_CONFIG_HTTP_REQUEST_BUFFER_ENABLED | proxy.config.http.request_buffer_enabled |
| TS_CONFIG_HTTP_REQUEST_HEADER_MAX_SIZE | proxy.config.http.request_header_max_size |
| TS_CONFIG_HTTP_RESPONSE_HEADER_MAX_SIZE | proxy.config.http.response_header_max_size |
| TS_CONFIG_HTTP_RESPONSE_SERVER_ENABLED | proxy.config.http.response_server_enabled |
| TS_CONFIG_HTTP_RESPONSE_SERVER_STR | proxy.config.http.response_server_str |
| TS_CONFIG_HTTP_SEND_HTTP11_REQUESTS | proxy.config.http.send_http11_requests |
| TS_CONFIG_HTTP_SERVER_SESSION_SHARING_MATCH | proxy.config.http.server_session_sharing.match |
| TS_CONFIG_HTTP_SLOW_LOG_THRESHOLD | proxy.config.http.slow.log.threshold |
| TS_CONFIG_HTTP_TRANSACTION_ACTIVE_TIMEOUT_IN | proxy.config.http.transaction_active_timeout_in |
| TS_CONFIG_HTTP_TRANSACTION_ACTIVE_TIMEOUT_OUT | proxy.config.http.transaction_active_timeout_out |
| TS_CONFIG_HTTP_TRANSACTION_NO_ACTIVITY_TIMEOUT_IN | proxy.config.http.transaction_no_activity_timeout_in |
| TS_CONFIG_HTTP_TRANSACTION_NO_ACTIVITY_TIMEOUT_OUT | proxy.config.http.transaction_no_activity_timeout_out |
| TS_CONFIG_HTTP_UNCACHEABLE_REQUESTS_BYPASS_PARENT | proxy.config.http.uncacheable_requests_bypass_parent |
| TS_CONFIG_NET_SOCK_OPTION_FLAG_OUT | proxy.config.net.sock_option_flag_out |
| TS_CONFIG_NET_SOCK_PACKET_MARK_OUT | proxy.config.net.sock_packet_mark_out |
| TS_CONFIG_NET_SOCK_PACKET_TOS_OUT | proxy.config.net.sock_packet_tos_out |
| TS_CONFIG_NET_SOCK_RECV_BUFFER_SIZE_OUT | proxy.config.net.sock_recv_buffer_size_out |
| TS_CONFIG_NET_SOCK_SEND_BUFFER_SIZE_OUT | proxy.config.net.sock_send_buffer_size_out |
| TS_CONFIG_PARENT_FAILURES_UPDATE_HOSTDB | proxy.config.http.parent_proxy.mark_down_hostdb |
| TS_CONFIG_SRV_ENABLED | proxy.config.srv_enabled |
| TS_CONFIG_SSL_CLIENT_CERT_FILENAME | proxy.config.ssl.client.cert.filename |
| TS_CONFIG_SSL_CERT_FILEPATH | proxy.config.ssl.client.cert.path |
| TS_CONFIG_SSL_CLIENT_VERIFY_SERVER_PROPERTIES | proxy.config.ssl.client.verify.server.properties |
| TS_CONFIG_SSL_CLIENT_VERIFY_SERVER_POLICY | proxy.config.ssl.client.verify.server.policy |
| TS_CONFIG_SSL_CLIENT_SNI_POLICY | proxy.config.ssl.client.sni_policy |
| TS_CONFIG_SSL_HSTS_INCLUDE_SUBDOMAINS | proxy.config.ssl.hsts_include_subdomains |
| TS_CONFIG_SSL_HSTS_MAX_AGE | proxy.config.ssl.hsts_max_age |
| TS_CONFIG_URL_REMAP_PRISTINE_HOST_HDR | proxy.config.url_remap.pristine_host_hdr |
| TS_CONFIG_WEBSOCKET_ACTIVE_TIMEOUT | proxy.config.websocket.active_timeout |
| TS_CONFIG_WEBSOCKET_NO_ACTIVITY_TIMEOUT | proxy.config.websocket.no_activity_timeout |
| TS_CONFIG_SSL_CLIENT_CERT_FILENAME | proxy.config.ssl.client.cert.filename |
| TS_CONFIG_SSL_CLIENT_PRIVATE_KEY_FILENAME | proxy.config.ssl.client.private_key.filename |
| TS_CONFIG_SSL_CLIENT_CA_CERT_FILENAME | proxy.config.ssl.client.CA.cert.filename |
| TS_CONFIG_HTTP_HOST_RESOLUTION_PREFERENCE | proxy.config.hostdb.ip_resolve |
| TS_CONFIG_PLUGIN_VC_DEFAULT_BUFFER_INDEX | proxy.config.plugin.vc.default_buffer_index |
| TS_CONFIG_PLUGIN_VC_DEFAULT_BUFFER_WATER_MARK | proxy.config.plugin.vc.default_buffer_water_mark |
| TS_CONFIG_NET_SOCK_NOTSENT_LOWAT | proxy.config.net.sock_notsent_lowat |
| TS_CONFIG_BODY_FACTORY_RESPONSE_SUPPRESSION_MODE | proxy.config.body_factory.response_suppression_mode |
Enable transaction buffer control with a high water mark of 262144 and a low water mark of 65536.
int callback(TSCont contp, TSEvent event, void* data)
{
TSHttpTxn txnp = static_cast<TSHttpTxn>(data);
TSHttpTxnConfigIntSet(txnp, TS_CONFIG_HTTP_FLOW_CONTROL_ENABLED, 1);
TSHttpTxnConfigIntSet(txnp, TS_CONFIG_HTTP_FLOW_CONTROL_HIGH_WATER_MARK, 262144);
TSHttpTxnConfigIntSet(txnp, TS_CONFIG_HTTP_FLOW_CONTROL_LOWER_WATER_MARK, 65536);
return 0;
}
2023, dev@trafficserver.apache.org
| November 2, 2023 | 9.2 |