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Add nghttp2_on_header_callback2

This commit is contained in:
Tatsuhiro Tsujikawa 2016-03-12 15:05:20 +09:00
parent 689d2a1afb
commit 12dad32890
9 changed files with 139 additions and 58 deletions
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4
doc/Makefile.am
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@ -65,6 +65,9 @@ APIDOCS= \
nghttp2_priority_spec_check_default.rst \
nghttp2_priority_spec_default_init.rst \
nghttp2_priority_spec_init.rst \
nghttp2_rcbuf_decref.rst \
nghttp2_rcbuf_get_buf.rst \
nghttp2_rcbuf_incref.rst \
nghttp2_select_next_protocol.rst \
nghttp2_session_callbacks_del.rst \
nghttp2_session_callbacks_new.rst \
@ -78,6 +81,7 @@ APIDOCS= \
nghttp2_session_callbacks_set_on_frame_recv_callback.rst \
nghttp2_session_callbacks_set_on_frame_send_callback.rst \
nghttp2_session_callbacks_set_on_header_callback.rst \
nghttp2_session_callbacks_set_on_header_callback2.rst \
nghttp2_session_callbacks_set_on_invalid_frame_recv_callback.rst \
nghttp2_session_callbacks_set_on_stream_close_callback.rst \
nghttp2_session_callbacks_set_pack_extension_callback.rst \

49
lib/includes/nghttp2/nghttp2.h
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@ -450,7 +450,7 @@ typedef struct nghttp2_rcbuf nghttp2_rcbuf;
*
* Increments the reference count of |rcbuf| by 1.
*/
void nghttp2_rcbuf_incref(nghttp2_rcbuf *rcbuf);
NGHTTP2_EXTERN void nghttp2_rcbuf_incref(nghttp2_rcbuf *rcbuf);
/**
* @function
@ -459,12 +459,14 @@ void nghttp2_rcbuf_incref(nghttp2_rcbuf *rcbuf);
* count becomes zero, the object pointed by |rcbuf| will be freed.
* In this case, application must not use |rcbuf| again.
*/
void nghttp2_rcbuf_decref(nghttp2_rcbuf *rcbuf);
NGHTTP2_EXTERN void nghttp2_rcbuf_decref(nghttp2_rcbuf *rcbuf);
/**
* @function
*
* Returns the underlying buffer managed by |rcbuf|.
*/
nghttp2_vec nghttp2_rcbuf_get_buf(nghttp2_rcbuf *rcbuf);
NGHTTP2_EXTERN nghttp2_vec nghttp2_rcbuf_get_buf(nghttp2_rcbuf *rcbuf);
/**
* @enum
@ -1674,6 +1676,32 @@ typedef int (*nghttp2_on_header_callback)(nghttp2_session *session,
const uint8_t *value, size_t valuelen,
uint8_t flags, void *user_data);
/**
* @functypedef
*
* Callback function invoked when a header name/value pair is received
* for the |frame|. The |name| is header name. The |value| is header
* value. The |flags| is bitwise OR of one or more of
* :type:`nghttp2_nv_flag`.
*
* This callback behaves like :type:`nghttp2_on_header_callback`,
* except that |name| and |value| are stored in reference counted
* buffer. If application wishes to keep these references without
* copying them, use `nghttp2_rcbuf_incref()` to increment their
* reference count. It is the application's responsibility to call
* `nghttp2_rcbuf_decref()` if they called `nghttp2_rcbuf_incref()` so
* as not to leak memory. If the |session| is created by
* `nghttp2_session_server_new3()` or `nghttp2_session_client_new3()`,
* the function to free memory is the one belongs to the mem
* parameter. As long as this free function alives, |name| and
* |value| can live after |session| was destroyed.
*/
typedef int (*nghttp2_on_header_callback2)(nghttp2_session *session,
const nghttp2_frame *frame,
nghttp2_rcbuf *name,
nghttp2_rcbuf *value, uint8_t flags,
void *user_data);
/**
* @functypedef
*
@ -1988,12 +2016,25 @@ NGHTTP2_EXTERN void nghttp2_session_callbacks_set_on_begin_headers_callback(
* @function
*
* Sets callback function invoked when a header name/value pair is
* received.
* received. If both
* `nghttp2_session_callbacks_set_on_header_callback()` and
* `nghttp2_session_callbacks_set_on_header_callback2()` are used to
* set callbacks, the latter has the precedence.
*/
NGHTTP2_EXTERN void nghttp2_session_callbacks_set_on_header_callback(
nghttp2_session_callbacks *cbs,
nghttp2_on_header_callback on_header_callback);
/**
* @function
*
* Sets callback function invoked when a header name/value pair is
* received.
*/
NGHTTP2_EXTERN void nghttp2_session_callbacks_set_on_header_callback2(
nghttp2_session_callbacks *cbs,
nghttp2_on_header_callback2 on_header_callback2);
/**
* @function
*

6
lib/nghttp2_callbacks.c
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@ -104,6 +104,12 @@ void nghttp2_session_callbacks_set_on_header_callback(
cbs->on_header_callback = on_header_callback;
}
void nghttp2_session_callbacks_set_on_header_callback2(
nghttp2_session_callbacks *cbs,
nghttp2_on_header_callback2 on_header_callback2) {
cbs->on_header_callback2 = on_header_callback2;
}
void nghttp2_session_callbacks_set_select_padding_callback(
nghttp2_session_callbacks *cbs,
nghttp2_select_padding_callback select_padding_callback) {

1
lib/nghttp2_callbacks.h
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@ -91,6 +91,7 @@ struct nghttp2_session_callbacks {
* received.
*/
nghttp2_on_header_callback on_header_callback;
nghttp2_on_header_callback2 on_header_callback2;
/**
* Callback function invoked when the library asks application how
* many padding bytes are required for the transmission of the given

14
lib/nghttp2_session.c
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@ -3123,19 +3123,23 @@ static int session_call_on_begin_headers(nghttp2_session *session,
static int session_call_on_header(nghttp2_session *session,
const nghttp2_frame *frame,
const nghttp2_hd_nv *nv) {
int rv;
if (session->callbacks.on_header_callback) {
int rv = 0;
if (session->callbacks.on_header_callback2) {
rv = session->callbacks.on_header_callback2(
session, frame, nv->name, nv->value, nv->flags, session->user_data);
} else if (session->callbacks.on_header_callback) {
rv = session->callbacks.on_header_callback(
session, frame, nv->name->base, nv->name->len, nv->value->base,
nv->value->len, nv->flags, session->user_data);
if (rv == NGHTTP2_ERR_PAUSE ||
rv == NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE) {
}
if (rv == NGHTTP2_ERR_PAUSE || rv == NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE) {
return rv;
}
if (rv != 0) {
return NGHTTP2_ERR_CALLBACK_FAILURE;
}
}
return 0;
}

9
src/shrpx_downstream.cc
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@ -182,6 +182,10 @@ Downstream::~Downstream() {
// explicitly.
dconn_.reset();
for (auto rcbuf : rcbufs_) {
nghttp2_rcbuf_decref(rcbuf);
}
if (LOG_ENABLED(INFO)) {
DLOG(INFO, this) << "Deleted";
}
@ -905,4 +909,9 @@ int32_t Downstream::get_assoc_stream_id() const { return assoc_stream_id_; }
BlockAllocator &Downstream::get_block_allocator() { return balloc_; }
void Downstream::add_rcbuf(nghttp2_rcbuf *rcbuf) {
nghttp2_rcbuf_incref(rcbuf);
rcbufs_.push_back(rcbuf);
}
} // namespace shrpx

4
src/shrpx_downstream.h
View File

@ -374,6 +374,8 @@ public:
BlockAllocator &get_block_allocator();
void add_rcbuf(nghttp2_rcbuf *rcbuf);
enum {
EVENT_ERROR = 0x1,
EVENT_TIMEOUT = 0x2,
@ -395,6 +397,8 @@ public:
private:
BlockAllocator balloc_;
std::vector<nghttp2_rcbuf *> rcbufs_;
Request req_;
Response resp_;

57
src/shrpx_http2_session.cc
View File

@ -801,10 +801,9 @@ void Http2Session::stop_settings_timer() {
}
namespace {
int on_header_callback(nghttp2_session *session, const nghttp2_frame *frame,
const uint8_t *name, size_t namelen,
const uint8_t *value, size_t valuelen, uint8_t flags,
void *user_data) {
int on_header_callback2(nghttp2_session *session, const nghttp2_frame *frame,
nghttp2_rcbuf *name, nghttp2_rcbuf *value,
uint8_t flags, void *user_data) {
auto http2session = static_cast<Http2Session *>(user_data);
auto sd = static_cast<StreamData *>(
nghttp2_session_get_stream_user_data(session, frame->hd.stream_id));
@ -816,21 +815,24 @@ int on_header_callback(nghttp2_session *session, const nghttp2_frame *frame,
return 0;
}
auto namebuf = nghttp2_rcbuf_get_buf(name);
auto valuebuf = nghttp2_rcbuf_get_buf(value);
auto &resp = downstream->response();
auto &httpconf = get_config()->http;
auto &balloc = downstream->get_block_allocator();
switch (frame->hd.type) {
case NGHTTP2_HEADERS: {
auto trailer = frame->headers.cat == NGHTTP2_HCAT_HEADERS &&
!downstream->get_expect_final_response();
if (resp.fs.buffer_size() + namelen + valuelen >
if (resp.fs.buffer_size() + namebuf.len + valuebuf.len >
httpconf.response_header_field_buffer ||
resp.fs.num_fields() >= httpconf.max_response_header_fields) {
if (LOG_ENABLED(INFO)) {
DLOG(INFO, downstream) << "Too large or many header field size="
<< resp.fs.buffer_size() + namelen + valuelen
DLOG(INFO, downstream)
<< "Too large or many header field size="
<< resp.fs.buffer_size() + namebuf.len + valuebuf.len
<< ", num=" << resp.fs.num_fields() + 1;
}
@ -843,20 +845,23 @@ int on_header_callback(nghttp2_session *session, const nghttp2_frame *frame,
return NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE;
}
auto token = http2::lookup_token(name, namelen);
auto token = http2::lookup_token(namebuf.base, namebuf.len);
auto no_index = flags & NGHTTP2_NV_FLAG_NO_INDEX;
downstream->add_rcbuf(name);
downstream->add_rcbuf(value);
if (trailer) {
// just store header fields for trailer part
resp.fs.add_trailer_token(
make_string_ref(balloc, StringRef{name, namelen}),
make_string_ref(balloc, StringRef{value, valuelen}), no_index, token);
resp.fs.add_trailer_token(StringRef{namebuf.base, namebuf.len},
StringRef{valuebuf.base, valuebuf.len},
no_index, token);
return 0;
}
resp.fs.add_header_token(
make_string_ref(balloc, StringRef{name, namelen}),
make_string_ref(balloc, StringRef{value, valuelen}), no_index, token);
resp.fs.add_header_token(StringRef{namebuf.base, namebuf.len},
StringRef{valuebuf.base, valuebuf.len}, no_index,
token);
return 0;
}
case NGHTTP2_PUSH_PROMISE: {
@ -870,29 +875,33 @@ int on_header_callback(nghttp2_session *session, const nghttp2_frame *frame,
auto promised_downstream = promised_sd->dconn->get_downstream();
auto namebuf = nghttp2_rcbuf_get_buf(name);
auto valuebuf = nghttp2_rcbuf_get_buf(value);
assert(promised_downstream);
auto &promised_req = promised_downstream->request();
auto &promised_balloc = promised_downstream->get_block_allocator();
// We use request header limit for PUSH_PROMISE
if (promised_req.fs.buffer_size() + namelen + valuelen >
if (promised_req.fs.buffer_size() + namebuf.len + valuebuf.len >
httpconf.request_header_field_buffer ||
promised_req.fs.num_fields() >= httpconf.max_request_header_fields) {
if (LOG_ENABLED(INFO)) {
DLOG(INFO, downstream)
<< "Too large or many header field size="
<< promised_req.fs.buffer_size() + namelen + valuelen
<< promised_req.fs.buffer_size() + namebuf.len + valuebuf.len
<< ", num=" << promised_req.fs.num_fields() + 1;
}
return NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE;
}
auto token = http2::lookup_token(name, namelen);
promised_req.fs.add_header_token(
make_string_ref(promised_balloc, StringRef{name, namelen}),
make_string_ref(promised_balloc, StringRef{value, valuelen}),
promised_downstream->add_rcbuf(name);
promised_downstream->add_rcbuf(value);
auto token = http2::lookup_token(namebuf.base, namebuf.len);
promised_req.fs.add_header_token(StringRef{namebuf.base, namebuf.len},
StringRef{valuebuf.base, valuebuf.len},
flags & NGHTTP2_NV_FLAG_NO_INDEX, token);
return 0;
@ -1402,8 +1411,8 @@ nghttp2_session_callbacks *create_http2_downstream_callbacks() {
nghttp2_session_callbacks_set_on_frame_not_send_callback(
callbacks, on_frame_not_send_callback);
nghttp2_session_callbacks_set_on_header_callback(callbacks,
on_header_callback);
nghttp2_session_callbacks_set_on_header_callback2(callbacks,
on_header_callback2);
nghttp2_session_callbacks_set_on_begin_headers_callback(
callbacks, on_begin_headers_callback);

41
src/shrpx_http2_upstream.cc
View File

@ -154,13 +154,15 @@ void Http2Upstream::stop_settings_timer() {
}
namespace {
int on_header_callback(nghttp2_session *session, const nghttp2_frame *frame,
const uint8_t *name, size_t namelen,
const uint8_t *value, size_t valuelen, uint8_t flags,
void *user_data) {
int on_header_callback2(nghttp2_session *session, const nghttp2_frame *frame,
nghttp2_rcbuf *name, nghttp2_rcbuf *value,
uint8_t flags, void *user_data) {
auto namebuf = nghttp2_rcbuf_get_buf(name);
auto valuebuf = nghttp2_rcbuf_get_buf(value);
if (get_config()->http2.upstream.debug.frame_debug) {
verbose_on_header_callback(session, frame, name, namelen, value, valuelen,
flags, user_data);
verbose_on_header_callback(session, frame, namebuf.base, namebuf.len,
valuebuf.base, valuebuf.len, flags, user_data);
}
if (frame->hd.type != NGHTTP2_HEADERS) {
return 0;
@ -176,9 +178,7 @@ int on_header_callback(nghttp2_session *session, const nghttp2_frame *frame,
auto &httpconf = get_config()->http;
auto &balloc = downstream->get_block_allocator();
if (req.fs.buffer_size() + namelen + valuelen >
if (req.fs.buffer_size() + namebuf.len + valuebuf.len >
httpconf.request_header_field_buffer ||
req.fs.num_fields() >= httpconf.max_request_header_fields) {
if (downstream->get_response_state() == Downstream::MSG_COMPLETE) {
@ -187,7 +187,7 @@ int on_header_callback(nghttp2_session *session, const nghttp2_frame *frame,
if (LOG_ENABLED(INFO)) {
ULOG(INFO, upstream) << "Too large or many header field size="
<< req.fs.buffer_size() + namelen + valuelen
<< req.fs.buffer_size() + namebuf.len + valuebuf.len
<< ", num=" << req.fs.num_fields() + 1;
}
@ -203,20 +203,23 @@ int on_header_callback(nghttp2_session *session, const nghttp2_frame *frame,
return 0;
}
auto token = http2::lookup_token(name, namelen);
auto token = http2::lookup_token(namebuf.base, namebuf.len);
auto no_index = flags & NGHTTP2_NV_FLAG_NO_INDEX;
downstream->add_rcbuf(name);
downstream->add_rcbuf(value);
if (frame->headers.cat == NGHTTP2_HCAT_HEADERS) {
// just store header fields for trailer part
req.fs.add_trailer_token(
make_string_ref(balloc, StringRef{name, namelen}),
make_string_ref(balloc, StringRef{value, valuelen}), no_index, token);
req.fs.add_trailer_token(StringRef{namebuf.base, namebuf.len},
StringRef{valuebuf.base, valuebuf.len}, no_index,
token);
return 0;
}
req.fs.add_header_token(make_string_ref(balloc, StringRef{name, namelen}),
make_string_ref(balloc, StringRef{value, valuelen}),
no_index, token);
req.fs.add_header_token(StringRef{namebuf.base, namebuf.len},
StringRef{valuebuf.base, valuebuf.len}, no_index,
token);
return 0;
}
} // namespace
@ -820,8 +823,8 @@ nghttp2_session_callbacks *create_http2_upstream_callbacks() {
nghttp2_session_callbacks_set_on_frame_not_send_callback(
callbacks, on_frame_not_send_callback);
nghttp2_session_callbacks_set_on_header_callback(callbacks,
on_header_callback);
nghttp2_session_callbacks_set_on_header_callback2(callbacks,
on_header_callback2);
nghttp2_session_callbacks_set_on_begin_headers_callback(
callbacks, on_begin_headers_callback);