增加HTTP重定向业务发送应答体的功能支持，调通发送403, 404等告警页面的功能。

plugin/business/pangu-http/pangu_http.cpp

@@ -14,7 +14,6 @@
 #include <event2/buffer.h>
 
 #include <ctemplate/template.h>
-
 #include <assert.h>
 #include <time.h>
 #include <stdio.h>
@@ -25,6 +24,7 @@
 #define	MAX_SCAN_RESULT				16
 #define	MAX_EDIT_ZONE_NUM			64
 #define	MAX_EDIT_MATCHES			16
+
 enum pangu_action//Bigger action number is prior.
 {
 	PG_ACTION_NONE = 0x00,
@@ -38,6 +38,7 @@ enum pangu_action//Bigger action number is prior.
 	PG_ACTION_LOOP = 0x60,    /* N/A */
 	PG_ACTION_WHITELIST = 0x80
 };
+
 enum scan_table
 {
 	PXY_CTRL_IP,
@@ -48,6 +49,7 @@ enum scan_table
 	PXY_CTRL_HTTP_RES_BODY,
 	__SCAN_TABLE_MAX
 };
+
 struct pangu_rt
 {
 	Maat_feather_t maat;
@@ -61,6 +63,7 @@ struct pangu_rt
 	int page_size;
 };
 struct pangu_rt * g_pangu_rt;
+
 #define MAAT_INPUT_JSON			0
 #define MAAT_INPUT_REDIS    	1
 #define MAAT_INPUT_FILE        	2
@@ -115,6 +118,7 @@ static Maat_feather_t create_maat_feather(const char * profile, const char * sec
 			goto error_out;
 			break;
 	}
+
 	if (maat_stat_on)
 	{
 		Maat_set_feather_opt(target, MAAT_OPT_STAT_FILE_PATH, maat_stat_file, strlen(maat_stat_file) + 1);
@@ -126,19 +130,21 @@ static Maat_feather_t create_maat_feather(const char * profile, const char * sec
 	}
 
 	Maat_set_feather_opt(target, MAAT_OPT_EFFECT_INVERVAL_MS, &effect_interval, sizeof(effect_interval));
-
 	Maat_set_feather_opt(target, MAAT_OPT_SCAN_DETAIL, &scan_detail, sizeof(scan_detail));
+
 	ret = Maat_initiate_feather(target);
 	if (ret < 0)
 	{
 		TFE_LOG_ERROR(logger, "%s MAAT init failed.", __FUNCTION__);
 		goto error_out;
 	}
+
 	return target;
 error_out:
 	Maat_burn_feather(target);
 	return NULL;
 }
+
 int pangu_http_init(struct tfe_proxy * proxy)
 {
 	const char * profile = "./pangu_conf/pangu_pxy.conf";
@@ -356,13 +362,13 @@ static enum pangu_action decide_ctrl_action(const struct Maat_rule_t * hit_rules
 	return prior_action;
 }
 //https://github.com/AndiDittrich/HttpErrorPages
-static void html_generate(int cfg_id, int status_code,
+static void html_generate(int cfg_id, int status_code, char ** page_buff, size_t * page_size)
-	char ** page_buff, size_t * page_size)
 {
 	ctemplate::TemplateDictionary dict("pg_page_dict");
 	dict.SetIntValue("cfg_id", cfg_id);
 	std::string output;
 	ctemplate::Template * tpl = NULL;
+
 	switch (status_code)
 	{
 		case 403: tpl = g_pangu_rt->tpl_403;
@@ -373,12 +379,14 @@ static void html_generate(int cfg_id, int status_code,
 			break;
 		default: return;
 	}
+
 	tpl->Expand(&output, &dict);
 	//todo: do I need to delete dict?
 	*page_size = output.length();
 	*page_buff = ALLOC(char, *page_size);
 	memcpy(*page_buff, output.c_str(), *page_size);
 }
+
 static void html_free(char ** page_buff)
 {
 	FREE(page_buff);
@@ -734,11 +742,11 @@ void http_replace(const struct tfe_stream * stream, const struct tfe_http_sessio
 static void http_reject(const struct tfe_http_session * session, enum tfe_http_event events,
 	struct pangu_http_ctx * ctx)
 {
-
 	int resp_code = 0, ret = 0;
 	struct tfe_http_half * response = NULL;
 	char * page_buff = NULL;
 	size_t page_size = 0;
+
 	char cont_len_str[TFE_STRING_MAX];
 	struct tfe_http_session * to_write_sess = NULL;
 
@@ -746,9 +754,9 @@ static void http_reject(const struct tfe_http_session * session, enum tfe_http_e
 	if (ret != 1)
 	{
 		TFE_LOG_ERROR(g_pangu_rt->local_logger, "Invalid reject rule %d paramter %s",
-			ctx->enforce_rules[0].config_id, ctx->enforce_para);
+			ctx->enforce_rules[0].config_id, ctx->enforce_para); goto error_out;
-		goto error_out;
 	}
+
 	to_write_sess = tfe_http_session_allow_write(session);
 	response = tfe_http_session_response_create(to_write_sess, resp_code);
 
@@ -756,13 +764,15 @@ static void http_reject(const struct tfe_http_session * session, enum tfe_http_e
 	_wrap_std_field_write(response, TFE_HTTP_CONT_TYPE, "text/html; charset=utf-8");
 	snprintf(cont_len_str, sizeof(cont_len_str), "%lu", page_size);
 	_wrap_std_field_write(response, TFE_HTTP_CONT_LENGTH, cont_len_str);
+
 	tfe_http_half_append_body(response, page_buff, page_size, 0);
 	tfe_http_session_response_set(to_write_sess, response);
-	response = NULL;
+	tfe_http_session_detach(session);
+
 error_out:
 	html_free(&page_buff);
-	return;
 }
+
 static void http_redirect(const struct tfe_http_session * session, enum tfe_http_event events,
 	struct pangu_http_ctx * ctx)
 {

plugin/protocol/http/src/http_half.cpp

@@ -422,7 +422,9 @@ const char * hf_ops_field_iterate(const struct tfe_http_half * half, void ** ite
 
 int hf_ops_append_body(struct tfe_http_half * half, char * buff, size_t size, int flag)
 {
-	return 0;
+	struct http_half_private * hf_private = to_hf_private(half);
+	if (hf_private->evbuf_body == NULL) { hf_private->evbuf_body = evbuffer_new(); }
+	return evbuffer_add(hf_private->evbuf_body, buff, size);
 }
 
 void hf_private_destory(struct http_half_private * hf_private)
@@ -651,6 +653,13 @@ void hf_private_construct(struct http_half_private * hf_private)
 
 	/* delimitor between header and body */
 	evbuffer_add_printf(hf_private->evbuf_raw, "\r\n");
+	/* add body */
+	if (hf_private->evbuf_body)
+	{
+		evbuffer_add_buffer(hf_private->evbuf_raw, hf_private->evbuf_body);
+	}
+
+	return;
 }
 
 struct http_session_private * hs_private_create(struct http_connection_private * hc_private,