static int before_frame_send_cb(nghttp2_session *ngh2,
const nghttp2_frame *frame,
void *userp)
{
h2_session *session = (h2_session *)userp;
(void)ngh2;
if (session->aborted) {
return NGHTTP2_ERR_CALLBACK_FAILURE;
}
/* Set the need to flush output when we have added one of the
* following frame types */
switch (frame->hd.type) {
case NGHTTP2_RST_STREAM:
case NGHTTP2_WINDOW_UPDATE:
case NGHTTP2_PUSH_PROMISE:
case NGHTTP2_PING:
case NGHTTP2_GOAWAY:
session->flush = 1;
break;
default:
break;
}
if (APLOGctrace2(session->c)) {
char buffer[256];
frame_print(frame, buffer, sizeof(buffer)/sizeof(buffer[0]));
ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c,
"h2_session(%ld): before_frame_send %s",
session->id, buffer);
}
return 0;
}
apr_status_t h2_mplx_out_trywait(h2_mplx *m, apr_interval_time_t timeout,
apr_thread_cond_t *iowait)
{
apr_status_t status;
int acquired;
AP_DEBUG_ASSERT(m);
if ((status = enter_mutex(m, &acquired)) == APR_SUCCESS) {
if (m->aborted) {
status = APR_ECONNABORTED;
}
else {
m->added_output = iowait;
status = apr_thread_cond_timedwait(m->added_output, m->lock, timeout);
if (APLOGctrace2(m->c)) {
ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, m->c,
"h2_mplx(%ld): trywait on data for %f ms)",
m->id, timeout/1000.0);
}
m->added_output = NULL;
}
leave_mutex(m, acquired);
}
return status;
}
static apr_status_t h2_conn_io_bucket_read(h2_conn_io *io,
apr_read_type_e block,
h2_conn_io_on_read_cb on_read_cb,
void *puser, int *pdone)
{
apr_status_t status = APR_SUCCESS;
apr_size_t readlen = 0;
*pdone = 0;
while (status == APR_SUCCESS && !*pdone
&& !APR_BRIGADE_EMPTY(io->input)) {
apr_bucket* bucket = APR_BRIGADE_FIRST(io->input);
if (APR_BUCKET_IS_METADATA(bucket)) {
/* we do nothing regarding any meta here */
}
else {
const char *bucket_data = NULL;
apr_size_t bucket_length = 0;
status = apr_bucket_read(bucket, &bucket_data,
&bucket_length, block);
if (status == APR_SUCCESS && bucket_length > 0) {
if (APLOGctrace2(io->connection)) {
char buffer[32];
h2_util_hex_dump(buffer, sizeof(buffer)/sizeof(buffer[0]),
bucket_data, bucket_length);
ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, io->connection,
"h2_conn_io(%ld): read %d bytes: %s",
io->connection->id, (int)bucket_length, buffer);
}
if (bucket_length > 0) {
apr_size_t consumed = 0;
status = on_read_cb(bucket_data, bucket_length,
&consumed, pdone, puser);
if (status == APR_SUCCESS && bucket_length > consumed) {
/* We have data left in the bucket. Split it. */
status = apr_bucket_split(bucket, consumed);
}
readlen += consumed;
}
}
}
apr_bucket_delete(bucket);
}
if (readlen == 0 && status == APR_SUCCESS && block == APR_NONBLOCK_READ) {
return APR_EAGAIN;
}
return status;
}
static int on_frame_not_send_cb(nghttp2_session *ngh2,
const nghttp2_frame *frame,
int lib_error_code, void *userp)
{
h2_session *session = (h2_session *)userp;
if (APLOGctrace2(session->c)) {
char buffer[256];
frame_print(frame, buffer, sizeof(buffer)/sizeof(buffer[0]));
ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c,
"h2_session: callback on_frame_not_send error=%d %s",
lib_error_code, buffer);
}
return 0;
}
static int on_frame_send_cb(nghttp2_session *ngh2,
const nghttp2_frame *frame,
void *userp)
{
h2_session *session = (h2_session *)userp;
(void)ngh2;
if (APLOGctrace2(session->c)) {
char buffer[256];
frame_print(frame, buffer, sizeof(buffer)/sizeof(buffer[0]));
ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c,
"h2_session(%ld): on_frame_send %s",
session->id, buffer);
}
return 0;
}
static int before_frame_send_cb(nghttp2_session *ngh2,
const nghttp2_frame *frame,
void *userp)
{
h2_session *session = (h2_session *)userp;
if (session->aborted) {
return NGHTTP2_ERR_CALLBACK_FAILURE;
}
if (APLOGctrace2(session->c)) {
char buffer[256];
frame_print(frame, buffer, sizeof(buffer)/sizeof(buffer[0]));
ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c,
"h2_session(%ld): before_frame_send %s",
session->id, buffer);
}
return 0;
}
static int on_invalid_frame_recv_cb(nghttp2_session *ngh2,
const nghttp2_frame *frame,
uint32_t error_code, void *userp)
{
h2_session *session = (h2_session *)userp;
if (session->aborted) {
return NGHTTP2_ERR_CALLBACK_FAILURE;
}
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: callback on_invalid_frame_recv error=%d %s",
(int)error_code, buffer);
}
return 0;
}
apr_status_t h2_mplx_out_trywait(h2_mplx *m, apr_interval_time_t timeout,
apr_thread_cond_t *iowait)
{
AP_DEBUG_ASSERT(m);
if (m->aborted) {
return APR_ECONNABORTED;
}
apr_status_t status = apr_thread_mutex_lock(m->lock);
if (APR_SUCCESS == status) {
m->added_output = iowait;
status = apr_thread_cond_timedwait(m->added_output, m->lock, timeout);
if (APLOGctrace2(m->c)) {
ap_log_cerror(APLOG_MARK, APLOG_TRACE2, status, m->c,
"h2_mplx(%ld): trywait on data for %f ms)",
m->id, timeout/1000.0);
}
m->added_output = NULL;
apr_thread_mutex_unlock(m->lock);
}
return status;
}
/**
* 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;
}
/**
* 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)
{
h2_session *session = (h2_session *)userp;
if (session->aborted) {
return NGHTTP2_ERR_CALLBACK_FAILURE;
}
apr_status_t status = APR_SUCCESS;
++session->frames_received;
ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c,
"h2_session(%ld): on_frame_rcv #%ld, type=%d", session->id,
session->frames_received, frame->hd.type);
switch (frame->hd.type) {
case NGHTTP2_HEADERS: {
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,
"h2_session: stream(%ld-%d): HEADERS frame "
"for unknown stream", session->id,
(int)frame->hd.stream_id);
return NGHTTP2_ERR_INVALID_STREAM_ID;
}
if (frame->hd.flags & NGHTTP2_FLAG_END_HEADERS) {
int 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,
"h2_session: stream(%ld-%d): DATA frame "
"for unknown stream", session->id,
(int)frame->hd.stream_id);
return NGHTTP2_ERR_PROTO;
}
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;
}
if (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,
"h2_session: stream(%ld-%d): error handling frame",
session->id, (int)frame->hd.stream_id);
return NGHTTP2_ERR_INVALID_STREAM_STATE;
}
return 0;
}
static apr_status_t h2_conn_io_bucket_read(h2_conn_io *io,
apr_read_type_e block,
h2_conn_io_on_read_cb on_read_cb,
void *puser, int *pdone)
{
apr_status_t status = APR_SUCCESS;
apr_size_t readlen = 0;
*pdone = 0;
while (status == APR_SUCCESS && !*pdone
&& !APR_BRIGADE_EMPTY(io->input)) {
apr_bucket* bucket = APR_BRIGADE_FIRST(io->input);
if (APR_BUCKET_IS_METADATA(bucket)) {
/* we do nothing regarding any meta here */
}
else {
const char *bucket_data = NULL;
apr_size_t bucket_length = 0;
status = apr_bucket_read(bucket, &bucket_data,
&bucket_length, block);
if (status == APR_SUCCESS && bucket_length > 0) {
if (APLOGctrace2(io->connection)) {
char buffer[32];
h2_util_hex_dump(buffer, sizeof(buffer)/sizeof(buffer[0]),
bucket_data, bucket_length);
ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, io->connection,
"h2_conn_io(%ld): read %ld bytes: %s",
io->connection->id, bucket_length, buffer);
}
if (io->preface_bytes_left > 0) {
/* still requiring bytes from the http/2 preface */
size_t pre_offset = HTTP2_PREFACE_LEN - io->preface_bytes_left;
apr_size_t check_len = io->preface_bytes_left;
if (check_len > bucket_length) {
check_len = bucket_length;
}
if (strncmp(HTTP2_PREFACE+pre_offset, bucket_data,
check_len)) {
/* preface mismatch */
ap_log_cerror(APLOG_MARK, APLOG_DEBUG, APR_EMISMATCH,
io->connection,
"h2_conn_io(%ld): preface check",
io->connection->id);
return APR_EMISMATCH;
}
io->preface_bytes_left -= check_len;
bucket_data += check_len;
bucket_length -= check_len;
ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, io->connection,
"h2_conn_io(%ld): preface check: %d bytes "
"matched, remaining %d",
io->connection->id, (int)check_len,
io->preface_bytes_left);
}
if (bucket_length > 0) {
apr_size_t consumed = 0;
status = on_read_cb(bucket_data, bucket_length,
&consumed, pdone, puser);
if (status == APR_SUCCESS && bucket_length > consumed) {
/* We have data left in the bucket. Split it. */
status = apr_bucket_split(bucket, consumed);
}
readlen += consumed;
}
}
}
apr_bucket_delete(bucket);
}
if (readlen == 0 && status == APR_SUCCESS && block == APR_NONBLOCK_READ) {
return APR_EAGAIN;
}
return status;
}