// Read the suffix of the previous chunk.
      if (bytesRemainingInChunk != NO_CHUNK_YET) {
        socket.source.readUtf8LineStrict()
      }
      try {
        bytesRemainingInChunk = socket.source.readHexadecimalUnsignedLong()
        val extensions = socket.source.readUtf8LineStrict().trim()
        if (bytesRemainingInChunk < 0L || extensions.isNotEmpty() && !extensions.startsWith(";")) {
          throw ProtocolException(