/**
* @brief Callback function invoked after the frame |frame| is sent.
* To set this callback to :type:`nghttp2_session_callbacks`, use
* `nghttp2_session_callbacks_set_on_frame_send_callback()`.
* @param[in] session: nghttp2 session.
* @param[in] frame: nghttp2 frame.
* @param[in] user_data: The |user_data| pointer is the third argument passed in to the call to
* `nghttp2_session_client_new()` or `nghttp2_session_server_new()`
* @return The implementation of this function must return 0 if it succeeds.
* If nonzero is returned, it is treated as fatal error and `nghttp2_session_send()`
* and `nghttp2_session_mem_send()` functions immediately return :enum:
* `NGHTTP2_ERR_CALLBACK_FAILURE`.
*/
static int on_frame_send_callback(nghttp2_session *session,
const nghttp2_frame *frame,
void *user_data)
{
size_t i;
printf("on_frame_send_callback %d\n", frame->hd.type);
switch (frame->hd.type) {
case NGHTTP2_HEADERS:
if (nghttp2_session_get_stream_user_data(session, frame->hd.stream_id)) {
const nghttp2_nv *nva = frame->headers.nva;
printf("[INFO] C --------> S (HEADERS)\n");
for (i = 0; i < frame->headers.nvlen; ++i) {
printf("%s: %s\n", nva[i].name, nva[i].value);
}
}
break;
case NGHTTP2_RST_STREAM:
printf("[INFO] C ------> S (RST_STREAM)\n");
break;
case NGHTTP2_GOAWAY:
printf("[INFO] C -------> S (GOAWAY)\n");
break;
}
return 0;
}
/**
* @brief Callback function invoked by `nghttp2_session_recv()` and `nghttp2_session_mem_recv()` when a frame is received.
* If frame is HEADERS or PUSH_PROMISE, the ``nva`` and ``nvlen``member of their data structure are always
* ``NULL`` and 0 respectively. The header name/value pairs are emitted via:type:`nghttp2_on_header_callback`
* To set this callback to :type:`nghttp2_session_callbacks`, use`nghttp2_session_callbacks_set_on_frame_send_callback()`.
* For HEADERS, PUSH_PROMISE and DATA frames, this callback may be called after stream is closed (see:type:
* `nghttp2_on_stream_close_callback`). The application should check that stream is still alive using its own stream
* management or :func:`nghttp2_session_get_stream_user_data()`.
* Only HEADERS and DATA frame can signal the end of incoming data. If ``frame->hd.flags & NGHTTP2_FLAG_END_STREAM``
* is nonzero, the|frame| is the last frame from the remote peer in this stream.
* This callback won't be called for CONTINUATION frames.
* HEADERS/PUSH_PROMISE + CONTINUATIONs are treated as single frame.
* @param[in] session: nghttp2 session.
* @param[in] frame: nghttp2 frame.
* @param[in] user_data: The |user_data| pointer is the third argument passed in to the call to
* `nghttp2_session_client_new()` or `nghttp2_session_server_new()`
* @return The implementation of this function must return 0 if it succeeds.
* If nonzero is returned, it is treated as fatal error and `nghttp2_session_send()`
* and `nghttp2_session_mem_send()` functions immediately return :enum:
* `NGHTTP2_ERR_CALLBACK_FAILURE`.
*/
static int on_frame_recv_callback(nghttp2_session *session,
const nghttp2_frame *frame,
void *user_data)
{
size_t i;
printf("on_frame_recv_callback %d\n", frame->hd.type);
switch (frame->hd.type) {
case NGHTTP2_HEADERS:
if (frame->headers.cat == NGHTTP2_HCAT_RESPONSE) {
const nghttp2_nv *nva = frame->headers.nva;
struct Request *req;
req = nghttp2_session_get_stream_user_data(session, frame->hd.stream_id);
if (req) {
printf("[INFO] C <--------- S (HEADERS)\n");
for (i = 0; i < frame->headers.nvlen; ++i) {
printf("%s %s\r\n", nva[i].name, nva[i].value);
}
}
}
break;
case NGHTTP2_RST_STREAM:
printf("[INFO] C <--------- S (RST_STREAM)\n");
break;
case NGHTTP2_GOAWAY:
printf("[INFO] C <-------- S (GOAWAY)\n");
break;
case NGHTTP2_DATA:
if (frame->hd.flags & NGHTTP2_FLAG_END_STREAM) {
printf("end stream flag\r\n");
}
break;
}
return 0;
}
static int on_stream_close(nghttp2_session *session, int32_t stream_id,
uint32_t error_code, void *userp)
{
struct SessionHandle *data_s;
struct HTTP *stream;
(void)session;
(void)stream_id;
(void)userp;
if(stream_id) {
/* get the stream from the hash based on Stream ID, stream ID zero is for
connection-oriented stuff */
data_s = nghttp2_session_get_stream_user_data(session, stream_id);
if(!data_s) {
/* We could get stream ID not in the hash. For example, if we
decided to reject stream (e.g., PUSH_PROMISE). */
return 0;
}
DEBUGF(infof(data_s, "on_stream_close(), error_code = %d, stream %u\n",
error_code, stream_id));
stream = data_s->req.protop;
if(!stream)
return NGHTTP2_ERR_CALLBACK_FAILURE;
stream->error_code = error_code;
stream->closed = TRUE;
/* remove the entry from the hash as the stream is now gone */
nghttp2_session_set_stream_user_data(session, stream_id, 0);
DEBUGF(infof(data_s, "Removed stream %u hash!\n", stream_id));
}
return 0;
}
/* nghttp2_on_header_callback: Called when nghttp2 library emits
single header name/value pair. */
static 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) {
http2_stream_data *stream_data;
const char PATH[] = ":path";
(void)flags;
(void)user_data;
switch (frame->hd.type) {
case NGHTTP2_HEADERS:
if (frame->headers.cat != NGHTTP2_HCAT_REQUEST) {
break;
}
stream_data =
nghttp2_session_get_stream_user_data(session, frame->hd.stream_id);
if (!stream_data || stream_data->request_path) {
break;
}
if (namelen == sizeof(PATH) - 1 && memcmp(PATH, name, namelen) == 0) {
size_t j;
for (j = 0; j < valuelen && value[j] != '?'; ++j)
;
stream_data->request_path = percent_decode(value, j);
}
break;
}
return 0;
}
static int on_frame_recv_callback(nghttp2_session *session,
const nghttp2_frame *frame, void *user_data) {
size_t i;
(void)user_data;
switch (frame->hd.type) {
case NGHTTP2_HEADERS:
if (frame->headers.cat == NGHTTP2_HCAT_RESPONSE) {
const nghttp2_nv *nva = frame->headers.nva;
struct Request *req;
req = nghttp2_session_get_stream_user_data(session, frame->hd.stream_id);
if (req) {
printf("[INFO] C <---------------------------- S (HEADERS)\n");
for (i = 0; i < frame->headers.nvlen; ++i) {
fwrite(nva[i].name, 1, nva[i].namelen, stdout);
printf(": ");
fwrite(nva[i].value, 1, nva[i].valuelen, stdout);
printf("\n");
}
}
}
break;
case NGHTTP2_RST_STREAM:
printf("[INFO] C <---------------------------- S (RST_STREAM)\n");
break;
case NGHTTP2_GOAWAY:
printf("[INFO] C <---------------------------- S (GOAWAY)\n");
break;
}
return 0;
}
static int on_data_chunk_recv(nghttp2_session *session, uint8_t flags,
int32_t stream_id,
const uint8_t *data, size_t len, void *userp)
{
struct HTTP *stream;
struct SessionHandle *data_s;
size_t nread;
struct connectdata *conn = (struct connectdata *)userp;
(void)session;
(void)flags;
(void)data;
DEBUGASSERT(stream_id); /* should never be a zero stream ID here */
/* get the stream from the hash based on Stream ID */
data_s = nghttp2_session_get_stream_user_data(session, stream_id);
if(!data_s)
/* Receiving a Stream ID not in the hash should not happen, this is an
internal error more than anything else! */
return NGHTTP2_ERR_CALLBACK_FAILURE;
stream = data_s->req.protop;
if(!stream)
return NGHTTP2_ERR_CALLBACK_FAILURE;
nread = MIN(stream->len, len);
memcpy(&stream->mem[stream->memlen], data, nread);
stream->len -= nread;
stream->memlen += nread;
data_s->state.drain++;
/* if we receive data for another handle, wake that up */
if(conn->data != data_s)
Curl_expire(data_s, 1); /* TODO: fix so that this can be set to 0 for
immediately? */
DEBUGF(infof(data_s, "%zu data received for stream %u "
"(%zu left in buffer %p, total %zu)\n",
nread, stream_id,
stream->len, stream->mem,
stream->memlen));
if(nread < len) {
stream->pausedata = data + nread;
stream->pauselen = len - nread;
DEBUGF(infof(data_s, "NGHTTP2_ERR_PAUSE - %zu bytes out of buffer"
", stream %u\n",
len - nread, stream_id));
data_s->easy_conn->proto.httpc.pause_stream_id = stream_id;
return NGHTTP2_ERR_PAUSE;
}
return 0;
}
static int on_begin_headers(nghttp2_session *session,
const nghttp2_frame *frame, void *userp)
{
struct SessionHandle *data_s = NULL;
(void)userp;
data_s = nghttp2_session_get_stream_user_data(session, frame->hd.stream_id);
if(data_s) {
DEBUGF(infof(data_s, "on_begin_headers() was called\n"));
}
return 0;
}
static int on_stream_close_callback(nghttp2_session *session,
int32_t stream_id,
nghttp2_error_code error_code,
void *user_data)
{
http2_session_data *session_data = (http2_session_data*)user_data;
http2_stream_data *stream_data;
stream_data = nghttp2_session_get_stream_user_data(session, stream_id);
remove_stream(session_data, stream_data);
delete_http2_stream_data(stream_data);
return 0;
}
/**
* @brief Callback function invoked when a chunk of data in DATA frame is received.
* The implementation of nghttp2_on_data_chunk_recv_callback type. We use this function to print the received response body.
* @param[in] session: nghttp2 session.
* @param[in] flags: no using.
* @param[in] stream_id: the stream ID this DATA frame belongs to.
* @param[in] data: receive data.
* @param[in] len: data length.
* @param[in] user_data: The |user_data| pointer is the third argument passed in to the call to
* `nghttp2_session_client_new()` or `nghttp2_session_server_new()`
* @return The implementation of this function must return 0 if it succeeds.
* If nonzero is returned, it is treated as fatal error and `nghttp2_session_send()`
* and `nghttp2_session_mem_send()` functions immediately return :enum:
* `NGHTTP2_ERR_CALLBACK_FAILURE`.
*/
static int on_data_chunk_recv_callback(nghttp2_session *session,
uint8_t flags, int32_t stream_id,
const uint8_t *data, size_t len,
void *user_data)
{
struct Request *req;
req = nghttp2_session_get_stream_user_data(session, stream_id);
if (req) {
printf("[INFO] C <----------- S (DATA chunk)\n" "%lu bytes\n", (unsigned long int)len);
//printf("data chunk %s\n", data);
}
return 0;
}
static int on_frame_send(nghttp2_session *session,
const nghttp2_frame *frame,
void *userp)
{
struct SessionHandle *data_s;
(void)userp;
data_s = nghttp2_session_get_stream_user_data(session, frame->hd.stream_id);
if(data_s) {
DEBUGF(infof(data_s, "on_frame_send() was called, length = %zd\n",
frame->hd.length));
}
return 0;
}
static int on_invalid_frame_recv(nghttp2_session *session,
const nghttp2_frame *frame,
int lib_error_code, void *userp)
{
struct SessionHandle *data_s = NULL;
(void)userp;
data_s = nghttp2_session_get_stream_user_data(session, frame->hd.stream_id);
if(data_s) {
DEBUGF(infof(data_s,
"on_invalid_frame_recv() was called, error=%d:%s\n",
lib_error_code, nghttp2_strerror(lib_error_code)));
}
return 0;
}
static int on_frame_not_send(nghttp2_session *session,
const nghttp2_frame *frame,
int lib_error_code, void *userp)
{
struct SessionHandle *data_s;
(void)userp;
data_s = nghttp2_session_get_stream_user_data(session, frame->hd.stream_id);
if(data_s) {
DEBUGF(infof(data_s,
"on_frame_not_send() was called, lib_error_code = %d\n",
lib_error_code));
}
return 0;
}
static ssize_t data_source_read_callback(nghttp2_session *session,
int32_t stream_id,
uint8_t *buf, size_t length,
uint32_t *data_flags,
nghttp2_data_source *source,
void *userp)
{
struct SessionHandle *data_s;
struct HTTP *stream = NULL;
size_t nread;
(void)source;
(void)userp;
if(stream_id) {
/* get the stream from the hash based on Stream ID, stream ID zero is for
connection-oriented stuff */
data_s = nghttp2_session_get_stream_user_data(session, stream_id);
if(!data_s)
/* Receiving a Stream ID not in the hash should not happen, this is an
internal error more than anything else! */
return NGHTTP2_ERR_CALLBACK_FAILURE;
stream = data_s->req.protop;
if(!stream)
return NGHTTP2_ERR_CALLBACK_FAILURE;
}
else
return NGHTTP2_ERR_INVALID_ARGUMENT;
nread = MIN(stream->upload_len, length);
if(nread > 0) {
memcpy(buf, stream->upload_mem, nread);
stream->upload_mem += nread;
stream->upload_len -= nread;
stream->upload_left -= nread;
}
if(stream->upload_left == 0)
*data_flags = 1;
else if(nread == 0)
return NGHTTP2_ERR_DEFERRED;
DEBUGF(infof(data_s, "data_source_read_callback: "
"returns %zu bytes stream %u\n",
nread, stream_id));
return nread;
}
/**
* @brief Callback function invoked when the stream |stream_id| is closed.
* We use this function to know if the response is fully received. Since we just fetch 1 resource in this program, after
* the response is received, we submit GOAWAY and close the session.
* @param[in] session: nghttp2 session.
* @param[in] stream_id: stream id.
* @param[in] error_code: The reason of closure.
* Usually one of :enum:`nghttp2_error_code`, but that is not guaranteed. The stream_user_data, which was specified in
* `nghttp2_submit_request()` or `nghttp2_submit_headers()`, is still available in this function.
* @param[in] user_data: The |user_data| pointer is the third argument passed in to the call to
* `nghttp2_session_client_new()` or `nghttp2_session_server_new()`
* @return The implementation of this function must return 0 if it succeeds.
* If nonzero is returned, it is treated as fatal error and `nghttp2_session_send()`
* and `nghttp2_session_mem_send()` functions immediately return :enum:
* `NGHTTP2_ERR_CALLBACK_FAILURE`.
*/
static int on_stream_close_callback(nghttp2_session *session, int32_t stream_id,
uint32_t error_code,
void *user_data)
{
struct Request *req;
req = nghttp2_session_get_stream_user_data(session, stream_id);
if (req) {
int rv;
rv = nghttp2_session_terminate_session(session, NGHTTP2_NO_ERROR);
if (rv != 0) {
printf("stream close nghttp2_session_terminate_session\r\n");
}
}
return 0;
}
static int on_request_recv_callback(nghttp2_session *session,
int32_t stream_id, void *user_data)
{
int fd;
http2_session_data *session_data = (http2_session_data*)user_data;
http2_stream_data *stream_data;
nghttp2_nv hdrs[] = {
MAKE_NV(":status", "200")
};
char *rel_path;
stream_data = (http2_stream_data*)nghttp2_session_get_stream_user_data
(session, stream_id);
if(!stream_data->request_path) {
if(error_reply(session, stream_data) != 0) {
return NGHTTP2_ERR_CALLBACK_FAILURE;
}
return 0;
}
fprintf(stderr, "%s GET %s\n", session_data->client_addr,
stream_data->request_path);
if(!check_path(stream_data->request_path)) {
if(error_reply(session, stream_data) != 0) {
return NGHTTP2_ERR_CALLBACK_FAILURE;
}
return 0;
}
for(rel_path = stream_data->request_path; *rel_path == '/'; ++rel_path);
fd = open(rel_path, O_RDONLY);
if(fd == -1) {
if(error_reply(session, stream_data) != 0) {
return NGHTTP2_ERR_CALLBACK_FAILURE;
}
return 0;
}
stream_data->fd = fd;
if(send_response(session, stream_id, hdrs, ARRLEN(hdrs), fd) != 0) {
close(fd);
return NGHTTP2_ERR_CALLBACK_FAILURE;
}
return 0;
}
static int on_frame_recv_callback(nghttp2_session *session,
const nghttp2_frame *frame, void *user_data) {
http2_session_data *session_data = (http2_session_data *)user_data;
http2_stream_data *stream_data;
switch (frame->hd.type) {
case NGHTTP2_DATA:
case NGHTTP2_HEADERS:
/* Check that the client request has finished */
if (frame->hd.flags & NGHTTP2_FLAG_END_STREAM) {
stream_data =
nghttp2_session_get_stream_user_data(session, frame->hd.stream_id);
/* For DATA and HEADERS frame, this callback may be called after
on_stream_close_callback. Check that stream still alive. */
if (!stream_data) {
return 0;
}
return on_request_recv(session, session_data, stream_data);
}
break;
default:
break;
}
return 0;
}
static int on_frame_recv(nghttp2_session *session, const nghttp2_frame *frame,
void *userp)
{
struct connectdata *conn = NULL;
struct http_conn *httpc = NULL;
struct SessionHandle *data_s = NULL;
struct HTTP *stream = NULL;
static int lastStream = -1;
int rv;
size_t left, ncopy;
int32_t stream_id = frame->hd.stream_id;
(void)userp;
if(!stream_id) {
/* stream ID zero is for connection-oriented stuff */
return 0;
}
data_s = nghttp2_session_get_stream_user_data(session,
frame->hd.stream_id);
if(lastStream != frame->hd.stream_id) {
lastStream = frame->hd.stream_id;
}
if(!data_s) {
DEBUGF(infof(conn->data,
"No SessionHandle associated with stream: %x\n",
stream_id));
return 0;
}
stream = data_s->req.protop;
if(!stream)
return NGHTTP2_ERR_CALLBACK_FAILURE;
DEBUGF(infof(data_s, "on_frame_recv() header %x stream %x\n",
frame->hd.type, stream_id));
conn = data_s->easy_conn;
assert(conn);
assert(conn->data == data_s);
httpc = &conn->proto.httpc;
switch(frame->hd.type) {
case NGHTTP2_DATA:
/* If body started on this stream, then receiving DATA is illegal. */
if(!stream->bodystarted) {
rv = nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE,
stream_id, NGHTTP2_PROTOCOL_ERROR);
if(nghttp2_is_fatal(rv)) {
return NGHTTP2_ERR_CALLBACK_FAILURE;
}
}
break;
case NGHTTP2_HEADERS:
if(frame->headers.cat == NGHTTP2_HCAT_REQUEST)
break;
if(stream->bodystarted) {
/* Only valid HEADERS after body started is trailer HEADERS. We
ignores trailer HEADERS for now. nghttp2 guarantees that it
has END_STREAM flag set. */
break;
}
/* nghttp2 guarantees that :status is received, and we store it to
stream->status_code */
DEBUGASSERT(stream->status_code != -1);
/* Only final status code signals the end of header */
if(stream->status_code / 100 != 1) {
stream->bodystarted = TRUE;
stream->status_code = -1;
}
Curl_add_buffer(stream->header_recvbuf, "\r\n", 2);
left = stream->header_recvbuf->size_used - stream->nread_header_recvbuf;
ncopy = MIN(stream->len, left);
memcpy(&stream->mem[stream->memlen],
stream->header_recvbuf->buffer + stream->nread_header_recvbuf,
ncopy);
stream->nread_header_recvbuf += ncopy;
DEBUGF(infof(data_s, "Store %zu bytes headers from stream %u at %p\n",
ncopy, stream_id, stream->mem));
stream->len -= ncopy;
stream->memlen += ncopy;
data_s->state.drain++;
Curl_expire(data_s, 1);
break;
case NGHTTP2_PUSH_PROMISE:
rv = push_promise(data_s, conn, &frame->push_promise);
if(rv) { /* deny! */
rv = nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE,
frame->push_promise.promised_stream_id,
NGHTTP2_CANCEL);
if(nghttp2_is_fatal(rv)) {
return rv;
}
}
break;
case NGHTTP2_SETTINGS:
{
uint32_t max_conn = httpc->settings.max_concurrent_streams;
DEBUGF(infof(conn->data, "Got SETTINGS for stream %u!\n", stream_id));
httpc->settings.max_concurrent_streams =
nghttp2_session_get_remote_settings(
session, NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS);
httpc->settings.enable_push =
nghttp2_session_get_remote_settings(
session, NGHTTP2_SETTINGS_ENABLE_PUSH);
DEBUGF(infof(conn->data, "MAX_CONCURRENT_STREAMS == %d\n",
httpc->settings.max_concurrent_streams));
DEBUGF(infof(conn->data, "ENABLE_PUSH == %s\n",
httpc->settings.enable_push?"TRUE":"false"));
if(max_conn != httpc->settings.max_concurrent_streams) {
/* only signal change if the value actually changed */
infof(conn->data,
"Connection state changed (MAX_CONCURRENT_STREAMS updated)!\n");
Curl_multi_connchanged(conn->data->multi);
}
}
break;
default:
DEBUGF(infof(conn->data, "Got frame type %x for stream %u!\n",
frame->hd.type, stream_id));
break;
}
return 0;
}
/* frame->hd.type is either NGHTTP2_HEADERS or NGHTTP2_PUSH_PROMISE */
static int on_header(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 *userp)
{
struct HTTP *stream;
struct SessionHandle *data_s;
int32_t stream_id = frame->hd.stream_id;
(void)flags;
(void)userp;
DEBUGASSERT(stream_id); /* should never be a zero stream ID here */
/* get the stream from the hash based on Stream ID */
data_s = nghttp2_session_get_stream_user_data(session, stream_id);
if(!data_s)
/* Receiving a Stream ID not in the hash should not happen, this is an
internal error more than anything else! */
return NGHTTP2_ERR_CALLBACK_FAILURE;
stream = data_s->req.protop;
if(!stream) {
failf(data_s, "Internal NULL stream! 5\n");
return NGHTTP2_ERR_CALLBACK_FAILURE;
}
if(stream->bodystarted)
/* Ignore trailer or HEADERS not mapped to HTTP semantics. The
consequence is handled in on_frame_recv(). */
return 0;
/* Store received PUSH_PROMISE headers to be used when the subsequent
PUSH_PROMISE callback comes */
if(frame->hd.type == NGHTTP2_PUSH_PROMISE) {
char *h;
if(!stream->push_headers) {
stream->push_headers_alloc = 10;
stream->push_headers = malloc(stream->push_headers_alloc *
sizeof(char *));
stream->push_headers_used = 0;
}
else if(stream->push_headers_used ==
stream->push_headers_alloc) {
char **headp;
stream->push_headers_alloc *= 2;
headp = realloc(stream->push_headers,
stream->push_headers_alloc * sizeof(char *));
if(!headp) {
free(stream->push_headers);
stream->push_headers = NULL;
return NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE;
}
stream->push_headers = headp;
}
h = aprintf("%s:%s", name, value);
if(h)
stream->push_headers[stream->push_headers_used++] = h;
return 0;
}
if(namelen == sizeof(":status") - 1 &&
memcmp(":status", name, namelen) == 0) {
/* nghttp2 guarantees :status is received first and only once, and
value is 3 digits status code, and decode_status_code always
succeeds. */
stream->status_code = decode_status_code(value, valuelen);
DEBUGASSERT(stream->status_code != -1);
Curl_add_buffer(stream->header_recvbuf, "HTTP/2.0 ", 9);
Curl_add_buffer(stream->header_recvbuf, value, valuelen);
Curl_add_buffer(stream->header_recvbuf, "\r\n", 2);
data_s->state.drain++;
Curl_expire(data_s, 1);
DEBUGF(infof(data_s, "h2 status: HTTP/2 %03d\n",
stream->status_code));
return 0;
}
/* nghttp2 guarantees that namelen > 0, and :status was already
received, and this is not pseudo-header field . */
/* convert to a HTTP1-style header */
Curl_add_buffer(stream->header_recvbuf, name, namelen);
Curl_add_buffer(stream->header_recvbuf, ":", 1);
Curl_add_buffer(stream->header_recvbuf, value, valuelen);
Curl_add_buffer(stream->header_recvbuf, "\r\n", 2);
data_s->state.drain++;
Curl_expire(data_s, 1);
DEBUGF(infof(data_s, "h2 header: %.*s: %.*s\n", namelen, name, valuelen,
value));
return 0; /* 0 is successful */
}
