len := runtime.Callers(3, pcs[:])
	frames := runtime.CallersFrames(pcs[:len])
	for i := 0; i < len; i++ {
		// second return value is "more", not "ok"
		frame, _ := frames.Next()
		if (!strings.HasPrefix(frame.File, gormSourceDir) ||
			strings.HasSuffix(frame.File, "_test.go")) && !strings.HasSuffix(frame.File, ".gen.go") {
			return string(strconv.AppendInt(append([]byte(frame.File), ':'), int64(frame.Line), 10))
		}
	}

	return ""

  ): Boolean {
    // Don't send new frames after we've failed or enqueued a close frame.
    if (failed || enqueuedClose) return false

    // If this frame overflows the buffer, reject it and close the web socket.
    if (queueSize + data.size > MAX_QUEUE_SIZE) {
      close(CLOSE_CLIENT_GOING_AWAY, null)
      return false
    }

    // Enqueue the message frame.
    queueSize += data.size.toLong()

pkg runtime, func CallersFrames([]uintptr) *Frames
pkg runtime, func KeepAlive(interface{})
pkg runtime, func SetCgoTraceback(int, unsafe.Pointer, unsafe.Pointer, unsafe.Pointer)
pkg runtime, method (*Frames) Next() (Frame, bool)
pkg runtime, type Frame struct
pkg runtime, type Frame struct, Entry uintptr
pkg runtime, type Frame struct, File string
pkg runtime, type Frame struct, Func *Func

        if (closed) return
        outFinished = errorCode == null
      }
      if (!sink.finished) {
        // We have 0 or more frames of data, and 0 or more frames of trailers. We need to send at
        // least one frame with the END_STREAM flag set. That must be the last frame, and the
        // trailers must be sent after all of the data.
        val hasData = sendBuffer.size > 0L
        val hasTrailers = trailers != null

    // Note: we don't process server frames so our client 'close' doesn't receive a server 'close'.
    assertThat(client.canceled).isFalse()

    taskFaker.advanceUntil(ns(4_999))
    assertThat(client.canceled).isFalse()

    taskFaker.advanceUntil(ns(5_000))
    assertThat(client.canceled).isTrue()

    client.processNextFrame() // This won't get a frame, but it will get a closed pipe.

```
$ adb shell setprop log.tag.okhttp.Http2 DEBUG
$ adb shell setprop log.tag.okhttp.TaskRunner DEBUG
$ adb logcat '*:E' 'okhttp.Http2:D' 'okhttp.TaskRunner:D'
```

### HTTP/2 Frame Logging

This logs inbound (`<<`) and outbound (`>>`) frames for HTTP/2 connections.

```
[2020-01-01 00:00:00] >> CONNECTION 505249202a20485454502f322e300d0a0d0a534d0d0a0d0a
[2020-01-01 00:00:00] >> 0x00000000     6 SETTINGS

@@ -38,12 +38,19 @@ __if_nametoindex (const char *ifname)
   return 0;
 #else
   struct ifreq ifr;
+  if (strlen (ifname) >= IFNAMSIZ)
+    {
+      __set_errno (ENODEV);
+      return 0;
+    }
+
+  strncpy (ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
+
   int fd = __opensock ();
 
   if (fd < 0)
     return 0;
 
-  strncpy (ifr.ifr_name, ifname, sizeof (ifr.ifr_name));

greater than 1.\";\n}\n\n// Generate enable or disable classes. Possibilities: false, \"enable\" or \"disable\"\n$rfs-class: false !default;\n\n// 1 rem = $rfs-rem-value px\n$rfs-rem-value: 16 !default;\n\n// Safari iframe resize bug: https://github.com/twbs/rfs/issues/14\n$rfs-safari-iframe-resize-bug-fix: false !default;\n\n// Disable RFS by setting $enable-responsive-font-sizes to false\n$enable-responsive-font-sizes: true !default;\n\n// Cache $rfs-base-font-size unit\n$rfs-base-font-size-unit: ...

    close(ErrorCode.PROTOCOL_ERROR, ErrorCode.PROTOCOL_ERROR, e)
  }

  /**
   * Sends any initial frames and starts reading frames from the remote peer. This should be called
   * after [Builder.build] for all new connections.
   *
   * @param sendConnectionPreface true to send connection preface frames. This should always be true
   *     except for in tests that don't check for a connection preface.

      assertThat(expected.message)
        .isEqualTo("Client-sent frames must be masked.")
    }
  }

  @Test fun serverSentFramesMustNotBeMasked() {
    data.write("8180".decodeHex())
    assertFailsWith<ProtocolException> {
      clientReader.processNextFrame()
    }.also { expected ->
      assertThat(expected.message)
        .isEqualTo("Server-sent frames must not be masked.")
    }
  }