On Aug 1, 2013, at 1:46 PM, zw...@apache.org wrote:

> Updated Branches:
>  refs/heads/master cecc082d4 -> 7485e0b5f
> 
> 
> TS-1255 Add Req/Resp max header size to be overridable

Would it be more robust to use a lookup table for the overridable value types?

static const
struct {
    OverridableDataType o_type;
    size_t o_offset;
} overridable[] = {

  /* TS_CONFIG_URL_REMAP_PRISTINE_HOST_HDR */
  { OVERRIDABLE_TYPE_BYTE, offsetof(OverridableHttpConfigParams, 
maintain_pristine_host_hdr},

  ...
};

void*
_conf_to_memberp(TSOverridableConfigKey conf, HttpSM* sm, OverridableDataType 
*typep)
{

    *typep = overridable[conf].o_type;
    return  ((uint8_t *)(sm->t_state.txn_conf)) + overridable[conf].o_offset;
}

> 
> 
> Project: http://git-wip-us.apache.org/repos/asf/trafficserver/repo
> Commit: http://git-wip-us.apache.org/repos/asf/trafficserver/commit/b0e7c2ab
> Tree: http://git-wip-us.apache.org/repos/asf/trafficserver/tree/b0e7c2ab
> Diff: http://git-wip-us.apache.org/repos/asf/trafficserver/diff/b0e7c2ab
> 
> Branch: refs/heads/master
> Commit: b0e7c2ab4a513ff6c0e3f79f65a0ef523fee7882
> Parents: 2f98469
> Author: Leif Hedstrom <zw...@apache.org>
> Authored: Sun Jul 28 22:50:14 2013 +0200
> Committer: Leif Hedstrom <zw...@apache.org>
> Committed: Thu Aug 1 22:42:48 2013 +0200
> 
> ----------------------------------------------------------------------
> proxy/InkAPI.cc          | 12 ++++++++++++
> proxy/InkAPITest.cc      |  4 +++-
> proxy/api/ts/ts.h.in     |  4 +++-
> proxy/http/HttpConfig.cc | 12 ++++++------
> proxy/http/HttpConfig.h  | 15 +++++++--------
> proxy/http/HttpSM.cc     |  4 ++--
> 6 files changed, 33 insertions(+), 18 deletions(-)
> ----------------------------------------------------------------------
> 
> 
> http://git-wip-us.apache.org/repos/asf/trafficserver/blob/b0e7c2ab/proxy/InkAPI.cc
> ----------------------------------------------------------------------
> diff --git a/proxy/InkAPI.cc b/proxy/InkAPI.cc
> index 1ed9933..99c833d 100644
> --- a/proxy/InkAPI.cc
> +++ b/proxy/InkAPI.cc
> @@ -7577,6 +7577,14 @@ _conf_to_memberp(TSOverridableConfigKey conf, HttpSM* 
> sm, OverridableDataType *t
>     typ = OVERRIDABLE_TYPE_INT;
>     ret = &sm->t_state.txn_conf->default_buffer_water_mark;
>     break;
> +  case TS_CONFIG_HTTP_REQUEST_HEADER_MAX_SIZE:
> +    typ = OVERRIDABLE_TYPE_INT;
> +    ret = &sm->t_state.txn_conf->request_hdr_max_size;
> +    break;
> +  case TS_CONFIG_HTTP_RESPONSE_HEADER_MAX_SIZE:
> +    typ = OVERRIDABLE_TYPE_INT;
> +    ret = &sm->t_state.txn_conf->response_hdr_max_size;
> +    break;
> 
>     // This helps avoiding compiler warnings, yet detect unhandled enum 
> members.
>   case TS_CONFIG_NULL:
> @@ -7898,6 +7906,8 @@ TSHttpTxnConfigFind(const char* name, int length, 
> TSOverridableConfigKey *conf,
>     case 'e':
>       if (!strncmp(name, "proxy.config.http.anonymize_remove_cookie", length))
>         cnf = TS_CONFIG_HTTP_ANONYMIZE_REMOVE_COOKIE;
> +      else if (!strncmp(name, "proxy.config.http.request_header_max_size", 
> length))
> +        cnf = TS_CONFIG_HTTP_REQUEST_HEADER_MAX_SIZE;
>       break;
>     case 'r':
>       if (!strncmp(name, "proxy.config.http.insert_response_via_str", length))
> @@ -7917,6 +7927,8 @@ TSHttpTxnConfigFind(const char* name, int length, 
> TSOverridableConfigKey *conf,
>     case 'e':
>       if (!strncmp(name, "proxy.config.http.cache.when_to_revalidate", 
> length))
>         cnf = TS_CONFIG_HTTP_CACHE_WHEN_TO_REVALIDATE;
> +      else if (!strncmp(name, "proxy.config.http.response_header_max_size", 
> length))
> +        cnf = TS_CONFIG_HTTP_RESPONSE_HEADER_MAX_SIZE;
>       break;
>     case 'r':
>       if (!strncmp(name, "proxy.config.http.anonymize_remove_referer", 
> length))
> 
> http://git-wip-us.apache.org/repos/asf/trafficserver/blob/b0e7c2ab/proxy/InkAPITest.cc
> ----------------------------------------------------------------------
> diff --git a/proxy/InkAPITest.cc b/proxy/InkAPITest.cc
> index 42de90c..85cc589 100644
> --- a/proxy/InkAPITest.cc
> +++ b/proxy/InkAPITest.cc
> @@ -7399,7 +7399,9 @@ const char 
> *SDK_Overridable_Configs[TS_CONFIG_LAST_ENTRY] = {
>   "proxy.config.http.cache.range.lookup",
>   "proxy.config.http.normalize_ae_gzip",
>   "proxy.config.http.default_buffer_size",
> -  "proxy.config.http.default_buffer_water_mark"
> +  "proxy.config.http.default_buffer_water_mark",
> +  "proxy.config.http.request_header_max_size",
> +  "proxy.config.http.response_header_max_size"
> };
> 
> REGRESSION_TEST(SDK_API_OVERRIDABLE_CONFIGS) (RegressionTest * test, int /* 
> atype ATS_UNUSED */, int *pstatus)
> 
> http://git-wip-us.apache.org/repos/asf/trafficserver/blob/b0e7c2ab/proxy/api/ts/ts.h.in
> ----------------------------------------------------------------------
> diff --git a/proxy/api/ts/ts.h.in b/proxy/api/ts/ts.h.in
> index b9cd558..47eeaf6 100644
> --- a/proxy/api/ts/ts.h.in
> +++ b/proxy/api/ts/ts.h.in
> @@ -675,7 +675,9 @@ extern "C"
>     TS_CONFIG_HTTP_NORMALIZE_AE_GZIP,
>     TS_CONFIG_HTTP_DEFAULT_BUFFER_SIZE,
>     TS_CONFIG_HTTP_DEFAULT_BUFFER_WATER_MARK,
> -    TS_CONFIG_LAST_ENTRY,
> +    TS_CONFIG_HTTP_REQUEST_HEADER_MAX_SIZE,
> +    TS_CONFIG_HTTP_RESPONSE_HEADER_MAX_SIZE,
> +    TS_CONFIG_LAST_ENTRY
>   } TSOverridableConfigKey;
> 
>   /* The TASK pool of threads is the primary method of off-loading 
> continuations from the
> 
> http://git-wip-us.apache.org/repos/asf/trafficserver/blob/b0e7c2ab/proxy/http/HttpConfig.cc
> ----------------------------------------------------------------------
> diff --git a/proxy/http/HttpConfig.cc b/proxy/http/HttpConfig.cc
> index b4db289..c8c0abc 100644
> --- a/proxy/http/HttpConfig.cc
> +++ b/proxy/http/HttpConfig.cc
> @@ -1291,9 +1291,8 @@ HttpConfig::startup()
> 
>   HttpEstablishStaticConfigStringAlloc(c.connect_ports_string, 
> "proxy.config.http.connect_ports");
> 
> -  HttpEstablishStaticConfigLongLong(c.request_hdr_max_size, 
> "proxy.config.http.request_header_max_size");
> -
> -  HttpEstablishStaticConfigLongLong(c.response_hdr_max_size, 
> "proxy.config.http.response_header_max_size");
> +  HttpEstablishStaticConfigLongLong(c.oride.request_hdr_max_size, 
> "proxy.config.http.request_header_max_size");
> +  HttpEstablishStaticConfigLongLong(c.oride.response_hdr_max_size, 
> "proxy.config.http.response_header_max_size");
> 
>   HttpEstablishStaticConfigByte(c.push_method_enabled, 
> "proxy.config.http.push_method_enabled");
> 
> @@ -1561,9 +1560,10 @@ HttpConfig::reconfigure()
>   params->connect_ports_string = ats_strdup(m_master.connect_ports_string);
>   params->connect_ports = parse_ports_list(params->connect_ports_string);
> 
> -  params->request_hdr_max_size = m_master.request_hdr_max_size;
> -  params->response_hdr_max_size = m_master.response_hdr_max_size;
> -  params->push_method_enabled = INT_TO_BOOL(m_master.push_method_enabled);
> +  params->oride.request_hdr_max_size = m_master.oride.request_hdr_max_size;
> +  params->oride.response_hdr_max_size = m_master.oride.response_hdr_max_size;
> +  
> +params->push_method_enabled = INT_TO_BOOL(m_master.push_method_enabled);
> 
>   params->reverse_proxy_enabled = INT_TO_BOOL(m_master.reverse_proxy_enabled);
>   params->url_remap_required = INT_TO_BOOL(m_master.url_remap_required);
> 
> http://git-wip-us.apache.org/repos/asf/trafficserver/blob/b0e7c2ab/proxy/http/HttpConfig.h
> ----------------------------------------------------------------------
> diff --git a/proxy/http/HttpConfig.h b/proxy/http/HttpConfig.h
> index 27a96e7..de47b94 100644
> --- a/proxy/http/HttpConfig.h
> +++ b/proxy/http/HttpConfig.h
> @@ -414,6 +414,7 @@ struct OverridableHttpConfigParams {
>       negative_caching_lifetime(1800), normalize_ae_gzip(0),
>       sock_recv_buffer_size_out(0), sock_send_buffer_size_out(0), 
> sock_option_flag_out(0),
>       sock_packet_mark_out(0), sock_packet_tos_out(0), 
> server_tcp_init_cwnd(0),
> +      request_hdr_max_size(131072), response_hdr_max_size(131072),
>       cache_heuristic_min_lifetime(3600), cache_heuristic_max_lifetime(86400),
>       cache_guaranteed_min_lifetime(0), 
> cache_guaranteed_max_lifetime(31536000), cache_max_stale_age(604800),
>       keep_alive_no_activity_timeout_in(115), 
> keep_alive_no_activity_timeout_out(120),
> @@ -524,6 +525,12 @@ struct OverridableHttpConfigParams {
>   ///////////////////////////////
>   MgmtInt server_tcp_init_cwnd;
> 
> +  ///////////////
> +  // Hdr Limit //
> +  ///////////////
> +  MgmtInt request_hdr_max_size;
> +  MgmtInt response_hdr_max_size;
> +
>   /////////////////////
>   // cache variables //
>   /////////////////////
> @@ -702,12 +709,6 @@ public:
>   char *connect_ports_string;
>   HttpConfigPortRange *connect_ports;
> 
> -  ///////////////
> -  // Hdr Limit //
> -  ///////////////
> -  MgmtInt request_hdr_max_size;
> -  MgmtInt response_hdr_max_size;
> -
>   //////////
>   // Push //
>   //////////
> @@ -923,8 +924,6 @@ HttpConfigParams::HttpConfigParams()
>     cache_when_to_add_no_cache_to_msie_requests(-1),
>     connect_ports_string(NULL),
>     connect_ports(NULL),
> -    request_hdr_max_size(131072),
> -    response_hdr_max_size(131072),
>     push_method_enabled(0),
>     referer_filter_enabled(0),
>     referer_format_redirect(0),
> 
> http://git-wip-us.apache.org/repos/asf/trafficserver/blob/b0e7c2ab/proxy/http/HttpSM.cc
> ----------------------------------------------------------------------
> diff --git a/proxy/http/HttpSM.cc b/proxy/http/HttpSM.cc
> index 5647f22..5b879bc 100644
> --- a/proxy/http/HttpSM.cc
> +++ b/proxy/http/HttpSM.cc
> @@ -720,7 +720,7 @@ HttpSM::state_read_client_request_header(int event, void 
> *data)
>   client_request_hdr_bytes += bytes_used;
> 
>   // Check to see if we are over the hdr size limit
> -  if (client_request_hdr_bytes > 
> t_state.http_config_param->request_hdr_max_size) {
> +  if (client_request_hdr_bytes > t_state.txn_conf->request_hdr_max_size) {
>     DebugSM("http", "client header bytes were over max header size; treating 
> as a bad request");
>     state = PARSE_ERROR;
>   }
> @@ -1776,7 +1776,7 @@ HttpSM::state_read_server_response_header(int event, 
> void *data)
>     state = PARSE_ERROR;
>   }
>   // Check to see if we are over the hdr size limit
> -  if (server_response_hdr_bytes > 
> t_state.http_config_param->response_hdr_max_size) {
> +  if (server_response_hdr_bytes > t_state.txn_conf->response_hdr_max_size) {
>     state = PARSE_ERROR;
>   }
> 
> 

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