this.withLock {
            currentPushRequests.remove(streamId)
          }
        }
      }
    }
  }

  /**
   * Eagerly reads `byteCount` bytes from the source before launching a background task to
   * process the data.  This avoids corrupting the stream.
   */
  @Throws(IOException::class)
  internal fun pushDataLater(
    streamId: Int,
    source: BufferedSource,
    byteCount: Int,