ssize_t nghttp2_frame_pack_push_promise(uint8_t **buf_ptr,
size_t *buflen_ptr,
nghttp2_push_promise *frame,
nghttp2_hd_context *deflater)
{
ssize_t framelen;
size_t nv_offset = NGHTTP2_FRAME_HEAD_LENGTH + 4;
ssize_t rv;
rv = nghttp2_hd_deflate_hd(deflater, buf_ptr, buflen_ptr, nv_offset,
frame->nva, frame->nvlen);
if(rv < 0) {
return rv;
}
framelen = rv + nv_offset;
frame->hd.length = framelen - NGHTTP2_FRAME_HEAD_LENGTH;
/* If frame->nvlen == 0, *buflen_ptr may be smaller than
nv_offset */
rv = nghttp2_reserve_buffer(buf_ptr, buflen_ptr, nv_offset);
if(rv < 0) {
return rv;
}
memset(*buf_ptr, 0, nv_offset);
/* pack ctrl header after length is determined */
nghttp2_frame_pack_frame_hd(*buf_ptr, &frame->hd);
nghttp2_put_uint32be(&(*buf_ptr)[8], frame->promised_stream_id);
return framelen;
}
ssize_t nghttp2_frame_pack_headers(uint8_t **buf_ptr,
size_t *buflen_ptr,
nghttp2_headers *frame,
nghttp2_hd_context *deflater)
{
ssize_t framelen;
size_t nv_offset = headers_nv_offset(frame);
ssize_t rv;
rv = nghttp2_hd_deflate_hd(deflater, buf_ptr, buflen_ptr, nv_offset,
frame->nva, frame->nvlen);
if(rv < 0) {
return rv;
}
framelen = rv + nv_offset;
frame->hd.length = framelen - NGHTTP2_FRAME_HEAD_LENGTH;
/* If frame->nvlen == 0, *buflen_ptr may be smaller than
nv_offset */
rv = nghttp2_reserve_buffer(buf_ptr, buflen_ptr, nv_offset);
if(rv < 0) {
return rv;
}
memset(*buf_ptr, 0, nv_offset);
/* pack ctrl header after length is determined */
nghttp2_frame_pack_frame_hd(*buf_ptr, &frame->hd);
if(frame->hd.flags & NGHTTP2_FLAG_PRIORITY) {
nghttp2_put_uint32be(&(*buf_ptr)[8], frame->pri);
}
return framelen;
}
ssize_t nghttp2_frame_pack_window_update(uint8_t **buf_ptr, size_t *buflen_ptr,
nghttp2_window_update *frame)
{
ssize_t framelen = NGHTTP2_FRAME_HEAD_LENGTH + 4;
int rv;
rv = nghttp2_reserve_buffer(buf_ptr, buflen_ptr, framelen);
if(rv != 0) {
return rv;
}
memset(*buf_ptr, 0, framelen);
nghttp2_frame_pack_frame_hd(*buf_ptr, &frame->hd);
nghttp2_put_uint32be(&(*buf_ptr)[8], frame->window_size_increment);
return framelen;
}
ssize_t nghttp2_frame_pack_ping(uint8_t **buf_ptr, size_t *buflen_ptr,
nghttp2_ping *frame)
{
ssize_t framelen = NGHTTP2_FRAME_HEAD_LENGTH + 8;
int rv;
rv = nghttp2_reserve_buffer(buf_ptr, buflen_ptr, framelen);
if(rv != 0) {
return rv;
}
memset(*buf_ptr, 0, framelen);
nghttp2_frame_pack_frame_hd(*buf_ptr, &frame->hd);
memcpy(&(*buf_ptr)[8], frame->opaque_data, sizeof(frame->opaque_data));
return framelen;
}
ssize_t nghttp2_frame_pack_settings(uint8_t **buf_ptr, size_t *buflen_ptr,
nghttp2_settings *frame)
{
ssize_t framelen = NGHTTP2_FRAME_HEAD_LENGTH + frame->hd.length;
int rv;
rv = nghttp2_reserve_buffer(buf_ptr, buflen_ptr, framelen);
if(rv != 0) {
return rv;
}
memset(*buf_ptr, 0, framelen);
nghttp2_frame_pack_frame_hd(*buf_ptr, &frame->hd);
nghttp2_frame_pack_settings_payload(*buf_ptr + 8, frame->iv, frame->niv);
return framelen;
}
ssize_t nghttp2_frame_pack_rst_stream(uint8_t **buf_ptr, size_t *buflen_ptr,
nghttp2_rst_stream *frame)
{
ssize_t framelen = NGHTTP2_FRAME_HEAD_LENGTH + 4;
int rv;
rv = nghttp2_reserve_buffer(buf_ptr, buflen_ptr, framelen);
if(rv != 0) {
return rv;
}
memset(*buf_ptr, 0, framelen);
nghttp2_frame_pack_frame_hd(*buf_ptr, &frame->hd);
nghttp2_put_uint32be(&(*buf_ptr)[8], frame->error_code);
return framelen;
}
ssize_t nghttp2_frame_pack_priority(uint8_t **buf_ptr, size_t *buflen_ptr,
nghttp2_priority *frame)
{
ssize_t framelen= NGHTTP2_FRAME_HEAD_LENGTH + 4;
int r;
r = nghttp2_reserve_buffer(buf_ptr, buflen_ptr, framelen);
if(r != 0) {
return r;
}
memset(*buf_ptr, 0, framelen);
nghttp2_frame_pack_frame_hd(*buf_ptr, &frame->hd);
nghttp2_put_uint32be(&(*buf_ptr)[8], frame->pri);
return framelen;
}
ssize_t nghttp2_frame_pack_goaway(uint8_t **buf_ptr, size_t *buflen_ptr,
nghttp2_goaway *frame)
{
ssize_t framelen = NGHTTP2_FRAME_HEAD_LENGTH + frame->hd.length;
int rv;
rv = nghttp2_reserve_buffer(buf_ptr, buflen_ptr, framelen);
if(rv != 0) {
return rv;
}
memset(*buf_ptr, 0, framelen);
nghttp2_frame_pack_frame_hd(*buf_ptr, &frame->hd);
nghttp2_put_uint32be(&(*buf_ptr)[8], frame->last_stream_id);
nghttp2_put_uint32be(&(*buf_ptr)[12], frame->error_code);
memcpy(&(*buf_ptr)[16], frame->opaque_data, frame->opaque_data_len);
return framelen;
}
ssize_t nghttp2_frame_pack_headers(uint8_t **buf_ptr,
size_t *buflen_ptr,
size_t *bufoff_ptr,
nghttp2_headers *frame,
nghttp2_hd_deflater *deflater)
{
size_t payloadoff = NGHTTP2_FRAME_HEAD_LENGTH + 2;
size_t nv_offset =
payloadoff + nghttp2_frame_headers_payload_nv_offset(frame);
ssize_t rv;
size_t payloadlen;
rv = nghttp2_hd_deflate_hd(deflater, buf_ptr, buflen_ptr, nv_offset,
frame->nva, frame->nvlen);
if(rv < 0) {
return rv;
}
payloadlen = nghttp2_frame_headers_payload_nv_offset(frame) + rv;
*bufoff_ptr = 2;
frame->padlen = 0;
frame->hd.length = payloadlen;
/* If frame->nvlen == 0, *buflen_ptr may be smaller than
nv_offset */
rv = nghttp2_reserve_buffer(buf_ptr, buflen_ptr, nv_offset);
if(rv < 0) {
return rv;
}
memset(*buf_ptr + *bufoff_ptr, 0, NGHTTP2_FRAME_HEAD_LENGTH);
/* pack ctrl header after length is determined */
if(NGHTTP2_MAX_FRAME_LENGTH < payloadlen) {
/* Needs CONTINUATION */
nghttp2_frame_hd hd = frame->hd;
hd.flags &= ~NGHTTP2_FLAG_END_HEADERS;
hd.length = NGHTTP2_MAX_FRAME_LENGTH;
nghttp2_frame_pack_frame_hd(*buf_ptr + *bufoff_ptr, &hd);
} else {
nghttp2_frame_pack_frame_hd(*buf_ptr + *bufoff_ptr, &frame->hd);
}
if(frame->hd.flags & NGHTTP2_FLAG_PRIORITY) {
nghttp2_put_uint32be(&(*buf_ptr)[payloadoff], frame->pri);
}
return *bufoff_ptr + NGHTTP2_FRAME_HEAD_LENGTH + frame->hd.length;
}
