static int on_frame_recv(nghttp2_session *session, const nghttp2_frame *frame,
void *userp)
{
struct connectdata *conn = (struct connectdata *)userp;
struct http_conn *c = &conn->proto.httpc;
int rv;
(void)session;
(void)frame;
infof(conn->data, "on_frame_recv() was called with header %x\n",
frame->hd.type);
switch(frame->hd.type) {
case NGHTTP2_HEADERS:
if(frame->headers.cat != NGHTTP2_HCAT_RESPONSE)
break;
c->bodystarted = TRUE;
Curl_add_buffer(c->header_recvbuf, "\r\n", 2);
c->nread_header_recvbuf = c->len < c->header_recvbuf->size_used ?
c->len : c->header_recvbuf->size_used;
memcpy(c->mem, c->header_recvbuf->buffer, c->nread_header_recvbuf);
c->mem += c->nread_header_recvbuf;
c->len -= c->nread_header_recvbuf;
break;
case NGHTTP2_PUSH_PROMISE:
rv = nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE,
frame->hd.stream_id, NGHTTP2_CANCEL);
if(nghttp2_is_fatal(rv)) {
return rv;
}
break;
}
return 0;
}
/* Start submitting the response to a stream request. This is possible
* once we have all the response headers. The response body will be
* read by the session using the callback we supply.
*/
apr_status_t h2_session_handle_response(h2_session *session, h2_stream *stream)
{
apr_status_t status = APR_SUCCESS;
int rv = 0;
AP_DEBUG_ASSERT(session);
AP_DEBUG_ASSERT(stream);
AP_DEBUG_ASSERT(stream->response);
if (stream->response->ngheader) {
rv = submit_response(session, stream->response);
}
else {
rv = nghttp2_submit_rst_stream(session->ngh2, NGHTTP2_FLAG_NONE,
stream->id, NGHTTP2_PROTOCOL_ERROR);
}
if (nghttp2_is_fatal(rv)) {
status = APR_EGENERAL;
h2_session_abort_int(session, rv);
ap_log_cerror(APLOG_MARK, APLOG_ERR, status, session->c,
APLOGNO(02940) "submit_response: %s",
nghttp2_strerror(rv));
}
return status;
}
static int error_reply(nghttp2_session *session,
http2_stream_data *stream_data)
{
int rv;
int pipefd[2];
nghttp2_nv hdrs[] = {
MAKE_NV(":status", "404")
};
rv = pipe(pipefd);
if(rv != 0) {
warn("Could not create pipe");
rv = nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE,
stream_data->stream_id,
NGHTTP2_INTERNAL_ERROR);
if(rv != 0) {
warnx("Fatal error: %s", nghttp2_strerror(rv));
return -1;
}
return 0;
}
write(pipefd[1], ERROR_HTML, sizeof(ERROR_HTML) - 1);
close(pipefd[1]);
stream_data->fd = pipefd[0];
if(send_response(session, stream_data->stream_id, hdrs, ARRLEN(hdrs),
pipefd[0]) != 0) {
close(pipefd[0]);
return -1;
}
return 0;
}
static int on_data_chunk_recv_cb(nghttp2_session *ngh2, uint8_t flags,
int32_t stream_id,
const uint8_t *data, size_t len, void *userp)
{
int rv;
h2_session *session = (h2_session *)userp;
h2_stream * stream;
apr_status_t status;
(void)flags;
if (session->aborted) {
return NGHTTP2_ERR_CALLBACK_FAILURE;
}
stream = h2_stream_set_get(session->streams, stream_id);
if (!stream) {
ap_log_cerror(APLOG_MARK, APLOG_ERR, 0, session->c,
APLOGNO(02919)
"h2_session: stream(%ld-%d): on_data_chunk for unknown stream",
session->id, (int)stream_id);
rv = nghttp2_submit_rst_stream(ngh2, NGHTTP2_FLAG_NONE, stream_id,
NGHTTP2_INTERNAL_ERROR);
if (nghttp2_is_fatal(rv)) {
return NGHTTP2_ERR_CALLBACK_FAILURE;
}
return 0;
}
status = h2_stream_write_data(stream, (const char *)data, len);
ap_log_cerror(APLOG_MARK, APLOG_TRACE1, status, session->c,
"h2_stream(%ld-%d): written DATA, length %d",
session->id, stream_id, (int)len);
if (status != APR_SUCCESS) {
rv = nghttp2_submit_rst_stream(ngh2, NGHTTP2_FLAG_NONE, stream_id,
NGHTTP2_INTERNAL_ERROR);
if (nghttp2_is_fatal(rv)) {
return NGHTTP2_ERR_CALLBACK_FAILURE;
}
}
return 0;
}
/* Start submitting the response to a stream request. This is possible
* once we have all the response headers. The response body will be
* read by the session using the callback we supply.
*/
apr_status_t h2_session_handle_response(h2_session *session,
h2_stream *stream, h2_response *head)
{
assert(session);
apr_status_t status = APR_SUCCESS;
int rv = 0;
if (head->http_status) {
ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c,
"h2_stream(%ld-%d): submitting response %s with %d headers",
session->id, stream->id, head->http_status,
(int)head->nvlen);
assert(head->nvlen);
nghttp2_data_provider provider = {
stream->id, stream_data_cb
};
rv = nghttp2_submit_response(session->ngh2, stream->id,
&head->nv, head->nvlen, &provider);
if (rv != 0) {
ap_log_cerror(APLOG_MARK, APLOG_ERR, status, session->c,
"h2_stream(%ld-%d): submit_response: %s",
session->id, stream->id, nghttp2_strerror(rv));
}
else {
ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c,
"h2_stream(%ld-%d): submitted response %s with %d "
"headers, rv=%d",
session->id, stream->id, head->http_status,
(int)head->nvlen, rv);
}
}
else {
rv = nghttp2_submit_rst_stream(session->ngh2, 0,
stream->id, NGHTTP2_ERR_INVALID_STATE);
}
if (nghttp2_is_fatal(rv)) {
status = APR_EGENERAL;
h2_session_abort_int(session, rv);
ap_log_cerror(APLOG_MARK, APLOG_ERR, status, session->c,
"submit_response: %s",
nghttp2_strerror(rv));
}
return status;
}
/* 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 connectdata *conn = (struct connectdata *)userp;
struct http_conn *c = &conn->proto.httpc;
int rv;
(void)session;
(void)frame;
(void)flags;
if(frame->hd.stream_id != c->stream_id) {
return 0;
}
if(c->bodystarted) {
/* Ignore trailer or HEADERS not mapped to HTTP semantics. The
consequence is handled in on_frame_recv(). */
return 0;
}
if(!nghttp2_check_header_name(name, namelen) ||
!nghttp2_check_header_value(value, valuelen)) {
rv = nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE,
frame->hd.stream_id,
NGHTTP2_PROTOCOL_ERROR);
if(nghttp2_is_fatal(rv)) {
return NGHTTP2_ERR_CALLBACK_FAILURE;
}
return NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE;
}
if(namelen == sizeof(":status") - 1 &&
memcmp(STATUS, name, namelen) == 0) {
/* :status must appear exactly once. */
if(c->status_code != -1 ||
(c->status_code = decode_status_code(value, valuelen)) == -1) {
rv = nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE,
frame->hd.stream_id,
NGHTTP2_PROTOCOL_ERROR);
if(nghttp2_is_fatal(rv)) {
return NGHTTP2_ERR_CALLBACK_FAILURE;
}
return NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE;
}
Curl_add_buffer(c->header_recvbuf, "HTTP/2.0 ", 9);
Curl_add_buffer(c->header_recvbuf, value, valuelen);
Curl_add_buffer(c->header_recvbuf, "\r\n", 2);
return 0;
}
else {
/* Here we are sure that namelen > 0 because of
nghttp2_check_header_name(). Pseudo header other than :status
is illegal. */
if(c->status_code == -1 || name[0] == ':') {
rv = nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE,
frame->hd.stream_id,
NGHTTP2_PROTOCOL_ERROR);
if(nghttp2_is_fatal(rv)) {
return NGHTTP2_ERR_CALLBACK_FAILURE;
}
return NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE;
}
/* convert to a HTTP1-style header */
infof(conn->data, "got header\n");
Curl_add_buffer(c->header_recvbuf, name, namelen);
Curl_add_buffer(c->header_recvbuf, ":", 1);
Curl_add_buffer(c->header_recvbuf, value, valuelen);
Curl_add_buffer(c->header_recvbuf, "\r\n", 2);
}
return 0; /* 0 is successful */
}
static int on_frame_recv(nghttp2_session *session, const nghttp2_frame *frame,
void *userp)
{
struct connectdata *conn = (struct connectdata *)userp;
struct http_conn *c = &conn->proto.httpc;
int rv;
size_t left, ncopy;
(void)session;
(void)frame;
infof(conn->data, "on_frame_recv() was called with header %x\n",
frame->hd.type);
switch(frame->hd.type) {
case NGHTTP2_DATA:
/* If body started, then receiving DATA is illegal. */
if(!c->bodystarted) {
rv = nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE,
frame->hd.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(c->bodystarted) {
/* Only valid HEADERS after body started is trailer header,
which is not fully supported in this code. If HEADERS is not
trailer, then it is a PROTOCOL_ERROR. */
if((frame->hd.flags & NGHTTP2_FLAG_END_STREAM) == 0) {
rv = nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE,
frame->hd.stream_id,
NGHTTP2_PROTOCOL_ERROR);
if(nghttp2_is_fatal(rv)) {
return NGHTTP2_ERR_CALLBACK_FAILURE;
}
}
break;
}
if(c->status_code == -1) {
/* No :status header field means PROTOCOL_ERROR. */
rv = nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE,
frame->hd.stream_id,
NGHTTP2_PROTOCOL_ERROR);
if(nghttp2_is_fatal(rv)) {
return NGHTTP2_ERR_CALLBACK_FAILURE;
}
break;
}
/* Only final status code signals the end of header */
if(c->status_code / 100 != 1) {
c->bodystarted = TRUE;
}
c->status_code = -1;
Curl_add_buffer(c->header_recvbuf, "\r\n", 2);
left = c->header_recvbuf->size_used - c->nread_header_recvbuf;
ncopy = c->len < left ? c->len : left;
memcpy(c->mem, c->header_recvbuf->buffer + c->nread_header_recvbuf, ncopy);
c->nread_header_recvbuf += ncopy;
c->mem += ncopy;
c->len -= ncopy;
break;
case NGHTTP2_PUSH_PROMISE:
rv = nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE,
frame->hd.stream_id, NGHTTP2_CANCEL);
if(nghttp2_is_fatal(rv)) {
return rv;
}
break;
}
return 0;
}
static int on_frame_recv(nghttp2_session *session, const nghttp2_frame *frame,
void *userp)
{
struct connectdata *conn = (struct connectdata *)userp;
struct http_conn *httpc = &conn->proto.httpc;
struct SessionHandle *data_s = NULL;
struct HTTP *stream = NULL;
int rv;
size_t left, ncopy;
int32_t stream_id = frame->hd.stream_id;
(void)session;
(void)frame;
DEBUGF(infof(conn->data, "on_frame_recv() header %x stream %x\n",
frame->hd.type, stream_id));
if(stream_id) {
/* get the stream from the hash based on Stream ID, stream ID zero is for
connection-oriented stuff */
data_s = Curl_hash_pick(&httpc->streamsh, &stream_id,
sizeof(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! */
failf(conn->data, "Received frame on Stream ID: %x not in stream hash!",
stream_id);
return NGHTTP2_ERR_CALLBACK_FAILURE;
}
stream = data_s->req.protop;
}
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:
DEBUGF(infof(data_s, "Got PUSH_PROMISE, RST_STREAM it!\n"));
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;
}
/**
* nghttp2 session has received a complete frame. Most, it uses
* for processing of internal state. HEADER and DATA frames however
* we need to handle ourself.
*/
static int on_frame_recv_cb(nghttp2_session *ng2s,
const nghttp2_frame *frame,
void *userp)
{
int rv;
h2_session *session = (h2_session *)userp;
apr_status_t status = APR_SUCCESS;
if (session->aborted) {
return NGHTTP2_ERR_CALLBACK_FAILURE;
}
++session->frames_received;
ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c,
"h2_session(%ld): on_frame_rcv #%ld, type=%d", session->id,
(long)session->frames_received, frame->hd.type);
switch (frame->hd.type) {
case NGHTTP2_HEADERS: {
int eos;
h2_stream * stream = h2_stream_set_get(session->streams,
frame->hd.stream_id);
if (stream == NULL) {
ap_log_cerror(APLOG_MARK, APLOG_ERR, 0, session->c,
APLOGNO(02921)
"h2_session: stream(%ld-%d): HEADERS frame "
"for unknown stream", session->id,
(int)frame->hd.stream_id);
rv = nghttp2_submit_rst_stream(ng2s, NGHTTP2_FLAG_NONE,
frame->hd.stream_id,
NGHTTP2_INTERNAL_ERROR);
if (nghttp2_is_fatal(rv)) {
return NGHTTP2_ERR_CALLBACK_FAILURE;
}
return 0;
}
eos = (frame->hd.flags & NGHTTP2_FLAG_END_STREAM);
status = stream_end_headers(session, stream, eos);
break;
}
case NGHTTP2_DATA: {
h2_stream * stream = h2_stream_set_get(session->streams,
frame->hd.stream_id);
if (stream == NULL) {
ap_log_cerror(APLOG_MARK, APLOG_ERR, 0, session->c,
APLOGNO(02922)
"h2_session: stream(%ld-%d): DATA frame "
"for unknown stream", session->id,
(int)frame->hd.stream_id);
rv = nghttp2_submit_rst_stream(ng2s, NGHTTP2_FLAG_NONE,
frame->hd.stream_id,
NGHTTP2_INTERNAL_ERROR);
if (nghttp2_is_fatal(rv)) {
return NGHTTP2_ERR_CALLBACK_FAILURE;
}
return 0;
}
break;
}
case NGHTTP2_PRIORITY: {
ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c,
"h2_session: stream(%ld-%d): PRIORITY frame "
" weight=%d, dependsOn=%d, exclusive=%d",
session->id, (int)frame->hd.stream_id,
frame->priority.pri_spec.weight,
frame->priority.pri_spec.stream_id,
frame->priority.pri_spec.exclusive);
break;
}
default:
if (APLOGctrace2(session->c)) {
char buffer[256];
frame_print(frame, buffer,
sizeof(buffer)/sizeof(buffer[0]));
ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, session->c,
"h2_session: on_frame_rcv %s", buffer);
}
break;
}
/* only DATA and HEADERS frame can bear END_STREAM flag. Other
frame types may have other flag which has the same value, so we
have to check the frame type first. */
if ((frame->hd.type == NGHTTP2_DATA || frame->hd.type == NGHTTP2_HEADERS) &&
frame->hd.flags & NGHTTP2_FLAG_END_STREAM) {
h2_stream * stream = h2_stream_set_get(session->streams,
frame->hd.stream_id);
if (stream != NULL) {
status = h2_stream_write_eos(stream);
ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, session->c,
"h2_stream(%ld-%d): input closed",
session->id, (int)frame->hd.stream_id);
}
}
if (status != APR_SUCCESS) {
ap_log_cerror(APLOG_MARK, APLOG_ERR, status, session->c,
APLOGNO(02923)
"h2_session: stream(%ld-%d): error handling frame",
session->id, (int)frame->hd.stream_id);
rv = nghttp2_submit_rst_stream(ng2s, NGHTTP2_FLAG_NONE,
frame->hd.stream_id,
NGHTTP2_INTERNAL_ERROR);
if (nghttp2_is_fatal(rv)) {
return NGHTTP2_ERR_CALLBACK_FAILURE;
}
return 0;
}
return 0;
}
static ssize_t stream_data_cb(nghttp2_session *ng2s,
int32_t stream_id,
uint8_t *buf,
size_t length,
uint32_t *data_flags,
nghttp2_data_source *source,
void *puser)
{
h2_session *session = (h2_session *)puser;
apr_size_t nread = length;
int eos = 0;
apr_status_t status;
h2_stream *stream;
AP_DEBUG_ASSERT(session);
/* The session wants to send more DATA for the stream. We need
* to find out how much of the requested length we can send without
* blocking.
* Indicate EOS when we encounter it or DEFERRED if the stream
* should be suspended.
* TODO: for handling of TRAILERS, the EOF indication needs
* to be aware of that.
*/
(void)ng2s;
(void)buf;
(void)source;
stream = h2_stream_set_get(session->streams, stream_id);
if (!stream) {
ap_log_cerror(APLOG_MARK, APLOG_ERR, 0, session->c,
APLOGNO(02937)
"h2_stream(%ld-%d): data requested but stream not found",
session->id, (int)stream_id);
return NGHTTP2_ERR_CALLBACK_FAILURE;
}
AP_DEBUG_ASSERT(!h2_stream_is_suspended(stream));
status = h2_stream_prep_read(stream, &nread, &eos);
if (nread) {
*data_flags |= NGHTTP2_DATA_FLAG_NO_COPY;
}
switch (status) {
case APR_SUCCESS:
break;
case APR_ECONNRESET:
return nghttp2_submit_rst_stream(ng2s, NGHTTP2_FLAG_NONE,
stream->id, stream->rst_error);
case APR_EAGAIN:
/* If there is no data available, our session will automatically
* suspend this stream and not ask for more data until we resume
* it. Remember at our h2_stream that we need to do this.
*/
nread = 0;
h2_stream_set_suspended(stream, 1);
ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c,
"h2_stream(%ld-%d): suspending stream",
session->id, (int)stream_id);
return NGHTTP2_ERR_DEFERRED;
case APR_EOF:
nread = 0;
eos = 1;
break;
default:
nread = 0;
ap_log_cerror(APLOG_MARK, APLOG_ERR, status, session->c,
APLOGNO(02938) "h2_stream(%ld-%d): reading data",
session->id, (int)stream_id);
return NGHTTP2_ERR_CALLBACK_FAILURE;
}
if (eos) {
*data_flags |= NGHTTP2_DATA_FLAG_EOF;
}
return (ssize_t)nread;
}
static int on_frame_recv(nghttp2_session *session, const nghttp2_frame *frame,
void *userp)
{
struct connectdata *conn = (struct connectdata *)userp;
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;
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++;
{
/* get the pointer from userp again since it was re-assigned above */
struct connectdata *conn_s = (struct connectdata *)userp;
/* if we receive data for another handle, wake that up */
if(conn_s->data != data_s)
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;
}
static void run_nghttp2_session_send(void) {
nghttp2_session *session;
nghttp2_session_callbacks callbacks;
nghttp2_nv nv[] = {MAKE_NV(":host", "example.org"),
MAKE_NV(":scheme", "https")};
nghttp2_data_provider data_prd;
nghttp2_settings_entry iv[2];
my_user_data ud;
int rv;
memset(&callbacks, 0, sizeof(nghttp2_session_callbacks));
callbacks.send_callback = null_send_callback;
data_prd.read_callback = fixed_length_data_source_read_callback;
ud.data_source_length = 64 * 1024;
iv[0].settings_id = NGHTTP2_SETTINGS_HEADER_TABLE_SIZE;
iv[0].value = 4096;
iv[1].settings_id = NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS;
iv[1].value = 100;
rv = nghttp2_session_client_new3(&session, &callbacks, &ud, NULL,
nghttp2_mem_fm());
if (rv != 0) {
goto client_new_fail;
}
rv = nghttp2_submit_request(session, NULL, nv, ARRLEN(nv), &data_prd, NULL);
if (rv < 0) {
goto fail;
}
rv = nghttp2_submit_headers(session, NGHTTP2_FLAG_NONE, -1, NULL, nv,
ARRLEN(nv), NULL);
if (rv < 0) {
goto fail;
}
rv = nghttp2_session_send(session);
if (rv != 0) {
goto fail;
}
/* The HEADERS submitted by the previous nghttp2_submit_headers will
have stream ID 3. Send HEADERS to that stream. */
rv = nghttp2_submit_headers(session, NGHTTP2_FLAG_NONE, 3, NULL, nv,
ARRLEN(nv), NULL);
if (rv != 0) {
goto fail;
}
rv = nghttp2_submit_data(session, NGHTTP2_FLAG_END_STREAM, 3, &data_prd);
if (rv != 0) {
goto fail;
}
rv = nghttp2_session_send(session);
if (rv != 0) {
goto fail;
}
rv = nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE, 3, NGHTTP2_CANCEL);
if (rv != 0) {
goto fail;
}
rv = nghttp2_session_send(session);
if (rv != 0) {
goto fail;
}
/* Sending against half-closed stream */
rv = nghttp2_submit_headers(session, NGHTTP2_FLAG_NONE, 3, NULL, nv,
ARRLEN(nv), NULL);
if (rv != 0) {
goto fail;
}
rv = nghttp2_submit_data(session, NGHTTP2_FLAG_END_STREAM, 3, &data_prd);
if (rv != 0) {
goto fail;
}
rv = nghttp2_submit_ping(session, NGHTTP2_FLAG_NONE, NULL);
if (rv != 0) {
goto fail;
}
rv = nghttp2_submit_settings(session, NGHTTP2_FLAG_NONE, iv, 2);
if (rv != 0) {
goto fail;
}
rv = nghttp2_session_send(session);
if (rv != 0) {
goto fail;
}
rv = nghttp2_submit_goaway(session, NGHTTP2_FLAG_NONE, 100, NGHTTP2_NO_ERROR,
NULL, 0);
if (rv != 0) {
goto fail;
}
rv = nghttp2_session_send(session);
if (rv != 0) {
goto fail;
}
fail:
nghttp2_session_del(session);
client_new_fail:;
}
