details: http://hg.nginx.org/nginx/rev/4c4ac9e335c4
branches:
changeset: 6612:4c4ac9e335c4
user: Roman Arutyunyan <arut@nginx.com>
date: Wed May 18 22:08:49 2016 +0300
description:
Stream: return module.

diffstat:

auto/modules | 8 +
auto/options | 3 +
src/stream/ngx_stream_return_module.c | 207 ++++++++++++++++++++++++++++++++++
3 files changed, 218 insertions(+), 0 deletions(-)

diffs (256 lines):

diff -r 85e7bcb37d6b -r 4c4ac9e335c4 auto/modules
--- a/auto/modules Wed Jun 29 12:52:52 2016 +0300
+++ b/auto/modules Wed May 18 22:08:49 2016 +0300
@@ -1028,6 +1028,14 @@ if [ $STREAM != NO ]; then
. auto/module
fi

+ if [ $STREAM_RETURN = YES ]; then
+ ngx_module_name=ngx_stream_return_module
+ ngx_module_deps=
+ ngx_module_srcs=src/stream/ngx_stream_return_module.c
+
+ . auto/module
+ fi
+
if [ $STREAM_UPSTREAM_HASH = YES ]; then
ngx_module_name=ngx_stream_upstream_hash_module
ngx_module_deps=
diff -r 85e7bcb37d6b -r 4c4ac9e335c4 auto/options
--- a/auto/options Wed Jun 29 12:52:52 2016 +0300
+++ b/auto/options Wed May 18 22:08:49 2016 +0300
@@ -118,6 +118,7 @@ STREAM_SSL=NO
STREAM_LIMIT_CONN=YES
STREAM_ACCESS=YES
STREAM_MAP=YES
+STREAM_RETURN=YES
STREAM_UPSTREAM_HASH=YES
STREAM_UPSTREAM_LEAST_CONN=YES
STREAM_UPSTREAM_ZONE=YES
@@ -296,6 +297,7 @@ use the \"--with-mail_ssl_module\" optio
STREAM_LIMIT_CONN=NO ;;
--without-stream_access_module) STREAM_ACCESS=NO ;;
--without-stream_map_module) STREAM_MAP=NO ;;
+ --without-stream_return_module) STREAM_RETURN=NO ;;
--without-stream_upstream_hash_module)
STREAM_UPSTREAM_HASH=NO ;;
--without-stream_upstream_least_conn_module)
@@ -495,6 +497,7 @@ cat << END
--without-stream_limit_conn_module disable ngx_stream_limit_conn_module
--without-stream_access_module disable ngx_stream_access_module
--without-stream_map_module disable ngx_stream_map_module
+ --without-stream_return_module disable ngx_stream_return_module
--without-stream_upstream_hash_module
disable ngx_stream_upstream_hash_module
--without-stream_upstream_least_conn_module
diff -r 85e7bcb37d6b -r 4c4ac9e335c4 src/stream/ngx_stream_return_module.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/stream/ngx_stream_return_module.c Wed May 18 22:08:49 2016 +0300
@@ -0,0 +1,207 @@
+
+/*
+ * Copyright (C) Roman Arutyunyan
+ * Copyright (C) Nginx, Inc.
+ */
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <ngx_stream.h>
+
+
+typedef struct {
+ ngx_stream_complex_value_t text;
+} ngx_stream_return_srv_conf_t;
+
+
+typedef struct {
+ ngx_buf_t buf;
+} ngx_stream_return_ctx_t;
+
+
+static void ngx_stream_return_handler(ngx_stream_session_t *s);
+static void ngx_stream_return_write_handler(ngx_event_t *ev);
+
+static void *ngx_stream_return_create_srv_conf(ngx_conf_t *cf);
+static char *ngx_stream_return(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
+
+
+static ngx_command_t ngx_stream_return_commands[] = {
+
+ { ngx_string("return"),
+ NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1,
+ ngx_stream_return,
+ NGX_STREAM_SRV_CONF_OFFSET,
+ 0,
+ NULL },
+
+ ngx_null_command
+};
+
+
+static ngx_stream_module_t ngx_stream_return_module_ctx = {
+ NULL, /* preconfiguration */
+ NULL, /* postconfiguration */
+
+ NULL, /* create main configuration */
+ NULL, /* init main configuration */
+
+ ngx_stream_return_create_srv_conf, /* create server configuration */
+ NULL, /* merge server configuration */
+};
+
+
+ngx_module_t ngx_stream_return_module = {
+ NGX_MODULE_V1,
+ &ngx_stream_return_module_ctx, /* module context */
+ ngx_stream_return_commands, /* module directives */
+ NGX_STREAM_MODULE, /* module type */
+ NULL, /* init master */
+ NULL, /* init module */
+ NULL, /* init process */
+ NULL, /* init thread */
+ NULL, /* exit thread */
+ NULL, /* exit process */
+ NULL, /* exit master */
+ NGX_MODULE_V1_PADDING
+};
+
+
+static void
+ngx_stream_return_handler(ngx_stream_session_t *s)
+{
+ ngx_str_t text;
+ ngx_connection_t *c;
+ ngx_stream_return_ctx_t *ctx;
+ ngx_stream_return_srv_conf_t *rscf;
+
+ c = s->connection;
+
+ c->log->action = "returning text";
+
+ rscf = ngx_stream_get_module_srv_conf(s, ngx_stream_return_module);
+
+ if (ngx_stream_complex_value(s, &rscf->text, &text) != NGX_OK) {
+ ngx_stream_close_connection(c);
+ return;
+ }
+
+ ngx_log_debug1(NGX_LOG_DEBUG_STREAM, c->log, 0,
+ "stream return text: \"%V\"", &text);
+
+ if (text.len == 0) {
+ ngx_stream_close_connection(c);
+ return;
+ }
+
+ ctx = ngx_pcalloc(c->pool, sizeof(ngx_stream_return_ctx_t));
+ if (ctx == NULL) {
+ ngx_stream_close_connection(c);
+ return;
+ }
+
+ ngx_stream_set_ctx(s, ctx, ngx_stream_return_module);
+
+ ctx->buf.pos = text.data;
+ ctx->buf.last = text.data + text.len;
+
+ c->write->handler = ngx_stream_return_write_handler;
+
+ ngx_stream_return_write_handler(c->write);
+}
+
+
+static void
+ngx_stream_return_write_handler(ngx_event_t *ev)
+{
+ ssize_t n;
+ ngx_buf_t *b;
+ ngx_connection_t *c;
+ ngx_stream_session_t *s;
+ ngx_stream_return_ctx_t *ctx;
+
+ c = ev->data;
+ s = c->data;
+
+ if (ev->timedout) {
+ ngx_connection_error(c, NGX_ETIMEDOUT, "connection timed out");
+ ngx_stream_close_connection(c);
+ return;
+ }
+
+ if (ev->ready) {
+ ctx = ngx_stream_get_module_ctx(s, ngx_stream_return_module);
+
+ b = &ctx->buf;
+
+ n = c->send(c, b->pos, b->last - b->pos);
+ if (n == NGX_ERROR) {
+ ngx_stream_close_connection(c);
+ return;
+ }
+
+ if (n > 0) {
+ b->pos += n;
+
+ if (b->pos == b->last) {
+ ngx_stream_close_connection(c);
+ return;
+ }
+ }
+ }
+
+ if (ngx_handle_write_event(ev, 0) != NGX_OK) {
+ ngx_stream_close_connection(c);
+ return;
+ }
+
+ ngx_add_timer(ev, 5000);
+}
+
+
+static void *
+ngx_stream_return_create_srv_conf(ngx_conf_t *cf)
+{
+ ngx_stream_return_srv_conf_t *conf;
+
+ conf = ngx_pcalloc(cf->pool, sizeof(ngx_stream_return_srv_conf_t));
+ if (conf == NULL) {
+ return NULL;
+ }
+
+ return conf;
+}
+
+
+static char *
+ngx_stream_return(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
+{
+ ngx_stream_return_srv_conf_t *rscf = conf;
+
+ ngx_str_t *value;
+ ngx_stream_core_srv_conf_t *cscf;
+ ngx_stream_compile_complex_value_t ccv;
+
+ if (rscf->text.value.data) {
+ return "is duplicate";
+ }
+
+ value = cf->args->elts;
+
+ ngx_memzero(&ccv, sizeof(ngx_stream_compile_complex_value_t));
+
+ ccv.cf = cf;
+ ccv.value = &value[1];
+ ccv.complex_value = &rscf->text;
+
+ if (ngx_stream_compile_complex_value(&ccv) != NGX_OK) {
+ return NGX_CONF_ERROR;
+ }
+
+ cscf = ngx_stream_conf_get_module_srv_conf(cf, ngx_stream_core_module);
+
+ cscf->handler = ngx_stream_return_handler;
+
+ return NGX_CONF_OK;
+}

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