0
这项任务对我来说似乎很简单,但我很难过。无论我从服务器请求什么页面,我试图用此代码实现的目标是将connection:keep-alive
添加到每个输出标题。然后,如果返回的页面提供了301或302(重定向状态),我将只添加该标题。这是因为我不希望客户因为到达重定向页面而必须打开新的连接。试图强制通过Apache模块保持生存
我的代码如下所示,我试着按照http://www.apachetutor.org/dev/brigades的说明进行操作,但让事情变得简单易懂。
代码用apxs编译得很好,但它对输出没有任何作用。我可能做错了什么?我正在寻找一种不会浪费不必要内存的解决方案。
#include "httpd.h"
#include "http_core.h"
#include "http_log.h"
#include "http_protocol.h"
#include "http_config.h"
#include "apr_buckets.h"
#include "apr_general.h"
#include "apr_lib.h"
#include "util_filter.h"
#include "http_request.h"
static apr_status_t OUTF(ap_filter_t *f,apr_bucket_brigade *pbbIn){
char *lp=0;
const char *data;
request_rec* r=f->r;
conn_rec* c=r->connection;
apr_bucket *pbktIn;
apr_size_t len;
for (pbktIn=APR_BRIGADE_FIRST(pbbIn);pbktIn!=APR_BRIGADE_SENTINEL(pbbIn);pbktIn=APR_BUCKET_NEXT(pbktIn)){
if(APR_BUCKET_IS_EOS(pbktIn)){continue;}
if (apr_bucket_read(pbktIn,&data,&len,APR_BLOCK_READ) != APR_SUCCESS){continue;}
if (!lp){
lp=strstr(data,"\r\n");
if (lp){
apr_bucket_split(pbktIn,(lp-data));
pbktIn=APR_BUCKET_NEXT(pbktIn);
const char* ka="connection:keep-alive\r\n";
//trying to insert "connection:keep-alive" into output data
APR_BUCKET_INSERT_BEFORE(pbktIn,apr_bucket_transient_create(ka,strlen(ka),c->bucket_alloc));
apr_bucket_split(pbktIn,strlen(ka));
APR_BUCKET_REMOVE(pbktIn);
pbktIn=APR_BUCKET_NEXT(pbktIn);
}
}
}
return ap_pass_brigade(f->next,pbbIn);
}
static void INS(request_rec *r){ap_add_output_filter("30X",NULL,r,r->connection);}
static void f301_register_hooks(apr_pool_t *p){
ap_hook_insert_filter(INS,NULL,NULL,APR_HOOK_FIRST);
ap_register_output_filter("30X",OUTF,NULL,AP_FTYPE_RESOURCE);
}
module AP_MODULE_DECLARE_DATA f301_module = {STANDARD20_MODULE_STUFF,NULL,NULL,NULL,NULL,NULL,f301_register_hooks};