Method write_to

src/proxy/http2/Http2Frame.cc:51–78

DATA Frame

// DATA Frame
//
int64_t
Http2DataFrame::write_to(MIOBuffer *iobuffer) const
{
  // Write frame header
  uint8_t buf[HTTP2_FRAME_HEADER_LEN];
  http2_write_frame_header(this->_hdr, make_iovec(buf));
  int64_t len = iobuffer->write(buf, sizeof(buf));

  // Write frame payload
  if (this->_reader && this->_payload_len > 0) {
    int64_t written = 0;
    // Fill current IOBufferBlock as much as possible to reduce SSL_write() calls
    while (written < this->_payload_len) {
      int64_t read_len = std::min(this->_payload_len - written, this->_reader->block_read_avail());

      if (iobuffer->block_write_avail() < read_len) {
        // This block size is the buffer size that we pass to SSLWriteBuffer
        iobuffer->append_block(Http2::write_buffer_block_size_index);
      }

      written += iobuffer->write(this->_reader->start(), read_len);
      this->_reader->consume(read_len);
    }
    len += written;
  }

  return len;
}

//
// HEADERS Frame