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HTTP parser: reduced memory consumption of header fields list.

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This commit is contained in:
Valentin Bartenev
2017-06-20 22:32:13 +03:00
parent 1a22195830
commit accb489492
4 changed files with 164 additions and 158 deletions
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9
src/nxt_controller.c
View File

@@ -51,7 +51,7 @@ static void nxt_controller_conn_close(nxt_task_t *task, void *obj, void *data);
static void nxt_controller_conn_free(nxt_task_t *task, void *obj, void *data); static void nxt_controller_conn_free(nxt_task_t *task, void *obj, void *data);
static nxt_int_t nxt_controller_request_content_length(void *ctx, static nxt_int_t nxt_controller_request_content_length(void *ctx,
nxt_http_field_t *field, uintptr_t data, nxt_log_t *log); nxt_http_field_t *field, nxt_log_t *log);
static void nxt_controller_process_request(nxt_task_t *task, static void nxt_controller_process_request(nxt_task_t *task,
nxt_conn_t *c, nxt_controller_request_t *r); nxt_conn_t *c, nxt_controller_request_t *r);
@@ -213,6 +213,8 @@ nxt_controller_conn_init(nxt_task_t *task, void *obj, void *data)
return; return;
} }
r->parser.fields_hash = nxt_controller_fields_hash;
b = nxt_buf_mem_alloc(c->mem_pool, 1024, 0); b = nxt_buf_mem_alloc(c->mem_pool, 1024, 0);
if (nxt_slow_path(b == NULL)) { if (nxt_slow_path(b == NULL)) {
nxt_controller_conn_free(task, c, NULL); nxt_controller_conn_free(task, c, NULL);
@@ -287,8 +289,7 @@ nxt_controller_conn_read(nxt_task_t *task, void *obj, void *data)
return; return;
} }
rc = nxt_http_fields_process(r->parser.fields, nxt_controller_fields_hash, rc = nxt_http_fields_process(r->parser.fields, r, task->log);
r, task->log);
if (nxt_slow_path(rc != NXT_OK)) { if (nxt_slow_path(rc != NXT_OK)) {
nxt_controller_conn_close(task, c, r); nxt_controller_conn_close(task, c, r);
@@ -512,7 +513,7 @@ nxt_controller_conn_free(nxt_task_t *task, void *obj, void *data)
static nxt_int_t static nxt_int_t
nxt_controller_request_content_length(void *ctx, nxt_http_field_t *field, nxt_controller_request_content_length(void *ctx, nxt_http_field_t *field,
uintptr_t data, nxt_log_t *log) nxt_log_t *log)
{ {
off_t length; off_t length;
nxt_controller_request_t *r; nxt_controller_request_t *r;

120
src/nxt_http_parse.c
View File

@@ -8,7 +8,8 @@
typedef struct { typedef struct {
nxt_http_fields_hash_entry_t *entry; nxt_http_field_handler_t handler;
uintptr_t data;
union { union {
uint8_t str[8]; uint8_t str[8];
@@ -43,9 +44,10 @@ static u_char *nxt_http_lookup_field_end(u_char *p, u_char *end);
static nxt_int_t nxt_http_parse_field_end(nxt_http_request_parse_t *rp, static nxt_int_t nxt_http_parse_field_end(nxt_http_request_parse_t *rp,
u_char **pos, u_char *end); u_char **pos, u_char *end);
static void nxt_http_fields_hash_lookup(nxt_http_fields_hash_t *hash,
static nxt_http_fields_hash_entry_t *nxt_http_fields_hash_lookup_long( uint64_t key[4], nxt_http_field_t *field);
nxt_http_fields_hash_t *hash, nxt_http_field_t *field); static void nxt_http_fields_hash_lookup_long(nxt_http_fields_hash_t *hash,
nxt_http_field_t *field);
typedef enum { typedef enum {
@@ -426,7 +428,7 @@ nxt_http_parse_field_name(nxt_http_request_parse_t *rp, u_char **pos,
p = *pos; p = *pos;
size = end - p; size = end - p;
i = rp->field.name.length; i = rp->field_name.length;
#define nxt_http_parse_field_name_step \ #define nxt_http_parse_field_name_step \
{ \ { \
@@ -437,7 +439,7 @@ nxt_http_parse_field_name(nxt_http_request_parse_t *rp, u_char **pos,
goto name_end; \ goto name_end; \
} \ } \
\ \
rp->field.key.str[i % 32] = c; \ rp->field_key.str[i % 32] = c; \
i++; \ i++; \
} }
@@ -459,7 +461,7 @@ nxt_http_parse_field_name(nxt_http_request_parse_t *rp, u_char **pos,
#undef nxt_http_parse_field_name_step #undef nxt_http_parse_field_name_step
rp->field.name.length = i; rp->field_name.length = i;
rp->handler = &nxt_http_parse_field_name; rp->handler = &nxt_http_parse_field_name;
return NXT_AGAIN; return NXT_AGAIN;
@@ -473,8 +475,8 @@ name_end:
*pos = &p[i] + 1; *pos = &p[i] + 1;
rp->field.name.length = i; rp->field_name.length = i;
rp->field.name.start = p; rp->field_name.start = p;
return nxt_http_parse_field_value(rp, pos, end); return nxt_http_parse_field_value(rp, pos, end);
} }
@@ -511,13 +513,13 @@ nxt_http_parse_field_value(nxt_http_request_parse_t *rp, u_char **pos,
*pos = p; *pos = p;
p += rp->field.value.length; p += rp->field_value.length;
for ( ;; ) { for ( ;; ) {
p = nxt_http_lookup_field_end(p, end); p = nxt_http_lookup_field_end(p, end);
if (nxt_slow_path(p == end)) { if (nxt_slow_path(p == end)) {
rp->field.value.length = p - *pos; rp->field_value.length = p - *pos;
rp->handler = &nxt_http_parse_field_value; rp->handler = &nxt_http_parse_field_value;
return NXT_AGAIN; return NXT_AGAIN;
} }
@@ -539,8 +541,8 @@ nxt_http_parse_field_value(nxt_http_request_parse_t *rp, u_char **pos,
} }
} }
rp->field.value.length = p - *pos; rp->field_value.length = p - *pos;
rp->field.value.start = *pos; rp->field_value.start = *pos;
*pos = p; *pos = p;
@@ -634,16 +636,23 @@ nxt_http_parse_field_end(nxt_http_request_parse_t *rp, u_char **pos,
if (nxt_fast_path(*p == '\n')) { if (nxt_fast_path(*p == '\n')) {
*pos = p + 1; *pos = p + 1;
if (rp->field.name.length != 0) { if (rp->field_name.length != 0) {
field = nxt_list_add(rp->fields); field = nxt_list_add(rp->fields);
if (nxt_slow_path(field == NULL)) { if (nxt_slow_path(field == NULL)) {
return NXT_ERROR; return NXT_ERROR;
} }
*field = rp->field; field->name = rp->field_name;
field->value = rp->field_value;
nxt_memzero(&rp->field, sizeof(nxt_http_field_t)); nxt_http_fields_hash_lookup(rp->fields_hash, rp->field_key.ui64,
field);
nxt_memzero(rp->field_key.str, 32);
rp->field_name.length = 0;
rp->field_value.length = 0;
rp->handler = &nxt_http_parse_field_name; rp->handler = &nxt_http_parse_field_name;
return NXT_OK; return NXT_OK;
@@ -726,7 +735,8 @@ nxt_http_fields_hash_create(nxt_http_fields_hash_entry_t *entries,
continue; continue;
} }
elt->entry = &entries[j]; elt->handler = entries[j].handler;
elt->data = entries[j].data;
nxt_memcpy_lowcase(elt->key->str, entries[j].name.start, length); nxt_memcpy_lowcase(elt->key->str, entries[j].name.start, length);
@@ -744,86 +754,87 @@ nxt_http_fields_hash_create(nxt_http_fields_hash_entry_t *entries,
} }
nxt_http_fields_hash_entry_t * static void
nxt_http_fields_hash_lookup(nxt_http_fields_hash_t *hash, nxt_http_fields_hash_lookup(nxt_http_fields_hash_t *hash, uint64_t key[4],
nxt_http_field_t *field) nxt_http_field_t *field)
{ {
nxt_http_fields_hash_elt_t *elt; nxt_http_fields_hash_elt_t *elt;
if (field->name.length < hash->min_length) { if (hash == NULL || field->name.length < hash->min_length) {
return NULL; goto not_found;
} }
if (field->name.length > hash->max_length) { if (field->name.length > hash->max_length) {
if (field->name.length > 32 && hash->long_fields != NULL) { if (field->name.length > 32 && hash->long_fields != NULL) {
return nxt_http_fields_hash_lookup_long(hash, field); nxt_http_fields_hash_lookup_long(hash, field);
return;
} }
return NULL; goto not_found;
} }
elt = hash->elts[field->name.length - hash->min_length]; elt = hash->elts[field->name.length - hash->min_length];
if (elt == NULL) { if (elt == NULL) {
return NULL; goto not_found;
} }
switch ((field->name.length + 7) / 8) { switch ((field->name.length + 7) / 8) {
case 1: case 1:
do { do {
if (elt->key[0].ui64 == field->key.ui64[0]) { if (elt->key[0].ui64 == key[0]) {
return elt->entry; break;
} }
elt = nxt_http_fields_hash_next_elt(elt, 1); elt = nxt_http_fields_hash_next_elt(elt, 1);
} while (elt->entry != NULL); } while (elt->handler != NULL);
break; break;
case 2: case 2:
do { do {
if (elt->key[0].ui64 == field->key.ui64[0] if (elt->key[0].ui64 == key[0]
&& elt->key[1].ui64 == field->key.ui64[1]) && elt->key[1].ui64 == key[1])
{ {
return elt->entry; break;
} }
elt = nxt_http_fields_hash_next_elt(elt, 2); elt = nxt_http_fields_hash_next_elt(elt, 2);
} while (elt->entry != NULL); } while (elt->handler != NULL);
break; break;
case 3: case 3:
do { do {
if (elt->key[0].ui64 == field->key.ui64[0] if (elt->key[0].ui64 == key[0]
&& elt->key[1].ui64 == field->key.ui64[1] && elt->key[1].ui64 == key[1]
&& elt->key[2].ui64 == field->key.ui64[2]) && elt->key[2].ui64 == key[2])
{ {
return elt->entry; break;
} }
elt = nxt_http_fields_hash_next_elt(elt, 3); elt = nxt_http_fields_hash_next_elt(elt, 3);
} while (elt->entry != NULL); } while (elt->handler != NULL);
break; break;
case 4: case 4:
do { do {
if (elt->key[0].ui64 == field->key.ui64[0] if (elt->key[0].ui64 == key[0]
&& elt->key[1].ui64 == field->key.ui64[1] && elt->key[1].ui64 == key[1]
&& elt->key[2].ui64 == field->key.ui64[2] && elt->key[2].ui64 == key[2]
&& elt->key[3].ui64 == field->key.ui64[3]) && elt->key[3].ui64 == key[3])
{ {
return elt->entry; break;
} }
elt = nxt_http_fields_hash_next_elt(elt, 4); elt = nxt_http_fields_hash_next_elt(elt, 4);
} while (elt->entry != NULL); } while (elt->handler != NULL);
break; break;
@@ -831,32 +842,39 @@ nxt_http_fields_hash_lookup(nxt_http_fields_hash_t *hash,
nxt_unreachable(); nxt_unreachable();
} }
return NULL; field->handler = elt->handler;
field->data = elt->data;
return;
not_found:
field->handler = NULL;
field->data = 0;
} }
static nxt_http_fields_hash_entry_t * static void
nxt_http_fields_hash_lookup_long(nxt_http_fields_hash_t *hash, nxt_http_fields_hash_lookup_long(nxt_http_fields_hash_t *hash,
nxt_http_field_t *field) nxt_http_field_t *field)
{ {
/* TODO */ /* TODO */
return NULL;
field->handler = NULL;
field->data = 0;
} }
nxt_int_t nxt_int_t
nxt_http_fields_process(nxt_list_t *fields, nxt_http_fields_hash_t *hash, nxt_http_fields_process(nxt_list_t *fields, void *ctx, nxt_log_t *log)
void *ctx, nxt_log_t *log)
{ {
nxt_int_t rc; nxt_int_t rc;
nxt_http_field_t *field; nxt_http_field_t *field;
nxt_http_fields_hash_entry_t *entry;
nxt_list_each(field, fields) { nxt_list_each(field, fields) {
entry = nxt_http_fields_hash_lookup(hash, field);
if (entry != NULL) { if (field->handler != NULL) {
rc = entry->handler(ctx, field, entry->data, log); rc = field->handler(ctx, field, log);
if (rc != NXT_OK) { if (rc != NXT_OK) {
return rc; return rc;

40
src/nxt_http_parse.h
View File

@@ -9,6 +9,7 @@
typedef struct nxt_http_request_parse_s nxt_http_request_parse_t; typedef struct nxt_http_request_parse_s nxt_http_request_parse_t;
typedef struct nxt_http_field_s nxt_http_field_t;
typedef struct nxt_http_fields_hash_s nxt_http_fields_hash_t; typedef struct nxt_http_fields_hash_s nxt_http_fields_hash_t;
@@ -18,17 +19,6 @@ typedef union {
} nxt_http_ver_t; } nxt_http_ver_t;
typedef struct {
union {
uint8_t str[32];
uint64_t ui64[4];
} key;
nxt_str_t name;
nxt_str_t value;
} nxt_http_field_t;
struct nxt_http_request_parse_s { struct nxt_http_request_parse_s {
nxt_int_t (*handler)(nxt_http_request_parse_t *rp, nxt_int_t (*handler)(nxt_http_request_parse_t *rp,
u_char **pos, u_char *end); u_char **pos, u_char *end);
@@ -44,7 +34,16 @@ struct nxt_http_request_parse_s {
nxt_http_ver_t version; nxt_http_ver_t version;
nxt_http_field_t field; union {
uint8_t str[32];
uint64_t ui64[4];
} field_key;
nxt_str_t field_name;
nxt_str_t field_value;
nxt_http_fields_hash_t *fields_hash;
nxt_list_t *fields; nxt_list_t *fields;
/* target with "/." */ /* target with "/." */
@@ -60,7 +59,7 @@ struct nxt_http_request_parse_s {
typedef nxt_int_t (*nxt_http_field_handler_t)(void *ctx, typedef nxt_int_t (*nxt_http_field_handler_t)(void *ctx,
nxt_http_field_t *field, nxt_http_field_t *field,
uintptr_t data, nxt_log_t *log); nxt_log_t *log);
typedef struct { typedef struct {
@@ -70,6 +69,14 @@ typedef struct {
} nxt_http_fields_hash_entry_t; } nxt_http_fields_hash_entry_t;
struct nxt_http_field_s {
nxt_str_t name;
nxt_str_t value;
nxt_http_field_handler_t handler;
uintptr_t data;
};
nxt_inline nxt_int_t nxt_inline nxt_int_t
nxt_http_parse_request_init(nxt_http_request_parse_t *rp, nxt_mp_t *mp) nxt_http_parse_request_init(nxt_http_request_parse_t *rp, nxt_mp_t *mp)
{ {
@@ -87,11 +94,8 @@ nxt_int_t nxt_http_parse_request(nxt_http_request_parse_t *rp,
nxt_http_fields_hash_t *nxt_http_fields_hash_create( nxt_http_fields_hash_t *nxt_http_fields_hash_create(
nxt_http_fields_hash_entry_t *entries, nxt_mp_t *mp); nxt_http_fields_hash_entry_t *entries, nxt_mp_t *mp);
nxt_http_fields_hash_entry_t *nxt_http_fields_hash_lookup( nxt_int_t nxt_http_fields_process(nxt_list_t *fields, void *ctx,
nxt_http_fields_hash_t *hash, nxt_http_field_t *field); nxt_log_t *log);
nxt_int_t nxt_http_fields_process(nxt_list_t *fields,
nxt_http_fields_hash_t *hash, void *ctx, nxt_log_t *log);
#endif /* _NXT_HTTP_PARSER_H_INCLUDED_ */ #endif /* _NXT_HTTP_PARSER_H_INCLUDED_ */

109
test/nxt_http_parse_unit_test.c
View File

@@ -26,14 +26,12 @@ typedef struct {
typedef struct { typedef struct {
nxt_http_fields_hash_entry_t *entries;
nxt_int_t result;
} nxt_http_parse_unit_test_fields_t; } nxt_http_parse_unit_test_fields_t;
typedef union { typedef union {
void *pointer; void *pointer;
nxt_http_parse_unit_test_fields_t fields; nxt_int_t result;
nxt_http_parse_unit_test_request_line_t request_line; nxt_http_parse_unit_test_request_line_t request_line;
} nxt_http_parse_unit_test_data_t; } nxt_http_parse_unit_test_data_t;
@@ -62,21 +60,8 @@ static nxt_int_t nxt_http_parse_unit_test_fields(
nxt_str_t *request, nxt_log_t *log); nxt_str_t *request, nxt_log_t *log);
static nxt_int_t nxt_http_unit_test_header_return(void *ctx, nxt_http_field_t *field, static nxt_int_t nxt_http_unit_test_header_return(void *ctx,
uintptr_t data, nxt_log_t *log); nxt_http_field_t *field, nxt_log_t *log);
static nxt_http_fields_hash_entry_t nxt_http_unit_test_fields[] = {
{ nxt_string("X-Bad-Header"),
&nxt_http_unit_test_header_return,
(uintptr_t) NXT_ERROR },
{ nxt_string("X-Good-Header"),
&nxt_http_unit_test_header_return,
(uintptr_t) NXT_OK },
{ nxt_null_string, NULL, 0 }
};
static nxt_http_parse_unit_test_case_t nxt_http_unit_test_cases[] = { static nxt_http_parse_unit_test_case_t nxt_http_unit_test_cases[] = {
@@ -295,10 +280,7 @@ static nxt_http_parse_unit_test_case_t nxt_http_unit_test_cases[] = {
"X-Good-Header: value\r\n\r\n"), "X-Good-Header: value\r\n\r\n"),
NXT_DONE, NXT_DONE,
&nxt_http_parse_unit_test_fields, &nxt_http_parse_unit_test_fields,
{ .fields = { { .result = NXT_OK }
nxt_http_unit_test_fields,
NXT_OK
}}
}, },
{ {
nxt_string("GET / HTTP/1.1\r\n" nxt_string("GET / HTTP/1.1\r\n"
@@ -307,14 +289,24 @@ static nxt_http_parse_unit_test_case_t nxt_http_unit_test_cases[] = {
"X-Bad-Header: value\r\n\r\n"), "X-Bad-Header: value\r\n\r\n"),
NXT_DONE, NXT_DONE,
&nxt_http_parse_unit_test_fields, &nxt_http_parse_unit_test_fields,
{ .fields = { { .result = NXT_ERROR }
nxt_http_unit_test_fields,
NXT_ERROR
}}
}, },
}; };
static nxt_http_fields_hash_entry_t nxt_http_unit_test_fields[] = {
{ nxt_string("X-Bad-Header"),
&nxt_http_unit_test_header_return,
(uintptr_t) NXT_ERROR },
{ nxt_string("X-Good-Header"),
&nxt_http_unit_test_header_return,
(uintptr_t) NXT_OK },
{ nxt_null_string, NULL, 0 }
};
static nxt_http_fields_hash_entry_t nxt_http_unit_test_bench_fields[] = { static nxt_http_fields_hash_entry_t nxt_http_unit_test_bench_fields[] = {
{ nxt_string("Host"), { nxt_string("Host"),
&nxt_http_unit_test_header_return, NXT_OK }, &nxt_http_unit_test_header_return, NXT_OK },
@@ -428,7 +420,7 @@ static nxt_str_t nxt_http_unit_test_big_request = nxt_string(
nxt_int_t nxt_int_t
nxt_http_parse_unit_test(nxt_thread_t *thr) nxt_http_parse_unit_test(nxt_thread_t *thr)
{ {
nxt_mp_t *mp; nxt_mp_t *mp, *mp_temp;
nxt_int_t rc; nxt_int_t rc;
nxt_uint_t i; nxt_uint_t i;
nxt_http_fields_hash_t *hash; nxt_http_fields_hash_t *hash;
@@ -437,20 +429,32 @@ nxt_http_parse_unit_test(nxt_thread_t *thr)
nxt_thread_time_update(thr); nxt_thread_time_update(thr);
for (i = 0; i < nxt_nitems(nxt_http_unit_test_cases); i++) {
test = &nxt_http_unit_test_cases[i];
nxt_memzero(&rp, sizeof(nxt_http_request_parse_t));
mp = nxt_mp_create(1024, 128, 256, 32); mp = nxt_mp_create(1024, 128, 256, 32);
if (mp == NULL) { if (mp == NULL) {
return NXT_ERROR; return NXT_ERROR;
} }
if (nxt_http_parse_request_init(&rp, mp) != NXT_OK) { hash = nxt_http_fields_hash_create(nxt_http_unit_test_fields, mp);
if (hash == NULL) {
return NXT_ERROR; return NXT_ERROR;
} }
for (i = 0; i < nxt_nitems(nxt_http_unit_test_cases); i++) {
test = &nxt_http_unit_test_cases[i];
nxt_memzero(&rp, sizeof(nxt_http_request_parse_t));
mp_temp = nxt_mp_create(1024, 128, 256, 32);
if (mp_temp == NULL) {
return NXT_ERROR;
}
if (nxt_http_parse_request_init(&rp, mp_temp) != NXT_OK) {
return NXT_ERROR;
}
rp.fields_hash = hash;
rc = nxt_http_parse_unit_test_run(&rp, &test->request); rc = nxt_http_parse_unit_test_run(&rp, &test->request);
if (rc != test->result) { if (rc != test->result) {
@@ -468,16 +472,11 @@ nxt_http_parse_unit_test(nxt_thread_t *thr)
return NXT_ERROR; return NXT_ERROR;
} }
nxt_mp_destroy(mp); nxt_mp_destroy(mp_temp);
} }
nxt_log_error(NXT_LOG_NOTICE, thr->log, "http parse unit test passed"); nxt_log_error(NXT_LOG_NOTICE, thr->log, "http parse unit test passed");
mp = nxt_mp_create(1024, 128, 256, 32);
if (mp == NULL) {
return NXT_ERROR;
}
hash = nxt_http_fields_hash_create(nxt_http_unit_test_bench_fields, mp); hash = nxt_http_fields_hash_create(nxt_http_unit_test_bench_fields, mp);
if (hash == NULL) { if (hash == NULL) {
return NXT_ERROR; return NXT_ERROR;
@@ -557,6 +556,8 @@ nxt_http_parse_unit_test_bench(nxt_thread_t *thr, nxt_str_t *request,
return NXT_ERROR; return NXT_ERROR;
} }
rp.fields_hash = hash;
buf.pos = buf.start; buf.pos = buf.start;
buf.free = buf.end; buf.free = buf.end;
@@ -566,8 +567,7 @@ nxt_http_parse_unit_test_bench(nxt_thread_t *thr, nxt_str_t *request,
return NXT_ERROR; return NXT_ERROR;
} }
if (nxt_slow_path(nxt_http_fields_process(rp.fields, hash, NULL, if (nxt_slow_path(nxt_http_fields_process(rp.fields, NULL, thr->log)
thr->log)
!= NXT_OK)) != NXT_OK))
{ {
nxt_log_alert(thr->log, "http parse unit %s request bench failed " nxt_log_alert(thr->log, "http parse unit %s request bench failed "
@@ -696,42 +696,25 @@ static nxt_int_t
nxt_http_parse_unit_test_fields(nxt_http_request_parse_t *rp, nxt_http_parse_unit_test_fields(nxt_http_request_parse_t *rp,
nxt_http_parse_unit_test_data_t *data, nxt_str_t *request, nxt_log_t *log) nxt_http_parse_unit_test_data_t *data, nxt_str_t *request, nxt_log_t *log)
{ {
nxt_mp_t *mp;
nxt_int_t rc; nxt_int_t rc;
nxt_http_fields_hash_t *hash;
nxt_http_parse_unit_test_fields_t *test = &data->fields; rc = nxt_http_fields_process(rp->fields, NULL, log);
mp = nxt_mp_create(1024, 128, 256, 32); if (rc != data->result) {
if (mp == NULL) {
return NXT_ERROR;
}
hash = nxt_http_fields_hash_create(test->entries, mp);
if (hash == NULL) {
nxt_log_alert(log, "unable to create hash");
return NXT_ERROR;
}
rc = nxt_http_fields_process(rp->fields, hash, NULL, log);
if (rc != test->result) {
nxt_log_alert(log, "http parse unit test hash failed:\n" nxt_log_alert(log, "http parse unit test hash failed:\n"
" - request:\n\"%V\"\n" " - request:\n\"%V\"\n"
" - result: %i (expected: %i)", " - result: %i (expected: %i)",
request, rc, test->result); request, rc, data->result);
return NXT_ERROR; return NXT_ERROR;
} }
nxt_mp_destroy(mp);
return NXT_OK; return NXT_OK;
} }
static nxt_int_t static nxt_int_t
nxt_http_unit_test_header_return(void *ctx, nxt_http_field_t *field, nxt_http_unit_test_header_return(void *ctx, nxt_http_field_t *field,
uintptr_t data, nxt_log_t *log) nxt_log_t *log)
{ {
return (nxt_int_t) data; return (nxt_int_t) field->data;
} }