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/*
* Copyright (C) NGINX, Inc.
*/
#include <nxt_unit.h>
#include <nxt_unit_request.h>
#include <nxt_clang.h>
#define CONTENT_TYPE "Content-Type"
#define TEXT_PLAIN "text/plain"
#define HELLO_WORLD "Hello world!\n"
#define NEW_LINE "\n"
#define REQUEST_DATA "Request data:\n"
#define METHOD " Method: "
#define PROTOCOL " Protocol: "
#define REMOTE_ADDR " Remote addr: "
#define LOCAL_ADDR " Local addr: "
#define TARGET " Target: "
#define PATH " Path: "
#define QUERY " Query: "
#define FIELDS " Fields:\n"
#define FIELD_PAD " "
#define FIELD_SEP ": "
#define BODY " Body:\n"
static inline char *
copy(char *p, const void *src, uint32_t len)
{
memcpy(p, src, len);
return p + len;
}
static void
greeting_app_request_handler(nxt_unit_request_info_t *req)
{
int rc;
char *p;
ssize_t res;
uint32_t i;
nxt_unit_buf_t *buf;
nxt_unit_field_t *f;
nxt_unit_request_t *r;
rc = nxt_unit_response_init(req, 200 /* Status code. */,
1 /* Number of response headers. */,
nxt_length(CONTENT_TYPE)
+ nxt_length(TEXT_PLAIN)
+ nxt_length(HELLO_WORLD));
if (nxt_slow_path(rc != NXT_UNIT_OK)) {
goto fail;
}
rc = nxt_unit_response_add_field(req,
CONTENT_TYPE, nxt_length(CONTENT_TYPE),
TEXT_PLAIN, nxt_length(TEXT_PLAIN));
if (nxt_slow_path(rc != NXT_UNIT_OK)) {
goto fail;
}
rc = nxt_unit_response_add_content(req, HELLO_WORLD,
nxt_length(HELLO_WORLD));
if (nxt_slow_path(rc != NXT_UNIT_OK)) {
goto fail;
}
rc = nxt_unit_response_send(req);
if (nxt_slow_path(rc != NXT_UNIT_OK)) {
goto fail;
}
r = req->request;
buf = nxt_unit_response_buf_alloc(req, (req->request_buf->end
- req->request_buf->start)
+ nxt_length(REQUEST_DATA)
+ nxt_length(METHOD)
+ nxt_length(NEW_LINE)
+ nxt_length(PROTOCOL)
+ nxt_length(NEW_LINE)
+ nxt_length(REMOTE_ADDR)
+ nxt_length(NEW_LINE)
+ nxt_length(LOCAL_ADDR)
+ nxt_length(NEW_LINE)
+ nxt_length(TARGET)
+ nxt_length(NEW_LINE)
+ nxt_length(PATH)
+ nxt_length(NEW_LINE)
+ nxt_length(QUERY)
+ nxt_length(NEW_LINE)
+ nxt_length(FIELDS)
+ r->fields_count * (
nxt_length(FIELD_PAD)
+ nxt_length(FIELD_SEP))
+ nxt_length(BODY));
if (nxt_slow_path(buf == NULL)) {
rc = NXT_UNIT_ERROR;
goto fail;
}
p = buf->free;
p = copy(p, REQUEST_DATA, nxt_length(REQUEST_DATA));
p = copy(p, METHOD, nxt_length(METHOD));
p = copy(p, nxt_unit_sptr_get(&r->method), r->method_length);
*p++ = '\n';
p = copy(p, PROTOCOL, nxt_length(PROTOCOL));
p = copy(p, nxt_unit_sptr_get(&r->version), r->version_length);
*p++ = '\n';
p = copy(p, REMOTE_ADDR, nxt_length(REMOTE_ADDR));
p = copy(p, nxt_unit_sptr_get(&r->remote), r->remote_length);
*p++ = '\n';
p = copy(p, LOCAL_ADDR, nxt_length(LOCAL_ADDR));
p = copy(p, nxt_unit_sptr_get(&r->local), r->local_length);
*p++ = '\n';
p = copy(p, TARGET, nxt_length(TARGET));
p = copy(p, nxt_unit_sptr_get(&r->target), r->target_length);
*p++ = '\n';
p = copy(p, PATH, nxt_length(PATH));
p = copy(p, nxt_unit_sptr_get(&r->path), r->path_length);
*p++ = '\n';
if (r->query.offset) {
p = copy(p, QUERY, nxt_length(QUERY));
p = copy(p, nxt_unit_sptr_get(&r->query), r->query_length);
*p++ = '\n';
}
p = copy(p, FIELDS, nxt_length(FIELDS));
for (i = 0; i < r->fields_count; i++) {
f = r->fields + i;
p = copy(p, FIELD_PAD, nxt_length(FIELD_PAD));
p = copy(p, nxt_unit_sptr_get(&f->name), f->name_length);
p = copy(p, FIELD_SEP, nxt_length(FIELD_SEP));
p = copy(p, nxt_unit_sptr_get(&f->value), f->value_length);
*p++ = '\n';
}
if (r->content_length > 0) {
p = copy(p, BODY, nxt_length(BODY));
res = nxt_unit_request_read(req, buf->free, buf->end - buf->free);
buf->free += res;
}
buf->free = p;
rc = nxt_unit_buf_send(buf);
fail:
nxt_unit_request_done(req, rc);
}
int
main()
{
nxt_unit_ctx_t *ctx;
nxt_unit_init_t init;
memset(&init, 0, sizeof(nxt_unit_init_t));
init.callbacks.request_handler = greeting_app_request_handler;
ctx = nxt_unit_init(&init);
if (ctx == NULL) {
return 1;
}
nxt_unit_run(ctx);
nxt_unit_done(ctx);
return 0;
}
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