if (done) {
          System.out.println("completed");
        } else {
          if (firstUpdate) {
            firstUpdate = false;
            if (contentLength == -1) {
              System.out.println("content-length: unknown");
            } else {
              System.out.format("content-length: %d\n", contentLength);
            }
          }

          System.out.println(bytesWritten);

      if (!response.isSuccessful()) throw new IOException("Unexpected code " + response);

      System.out.println("Server: " + response.header("Server"));
      System.out.println("Date: " + response.header("Date"));
      System.out.println("Vary: " + response.headers("Vary"));
    }
  }

  public static void main(String... args) throws Exception {
    new AccessHeaders().run();
  }

        }

        this.macSigningKey = macSigningKey;
        this.bypass = bypass;
        this.updates = 0;
        this.signSequence = 0;

        if (LogStream.level >= 5) {
            log.println("macSigningKey:");
            Hexdump.hexdump(log, macSigningKey, 0, macSigningKey.length);
        }
    }

    /**
     * Constructs a new signing digest using transport and authentication credentials.
     *

	reader := strings.NewReader(data)

	n, err := writer.ReadFrom(reader)
	if err != nil {
		fmt.Println("ReadFrom Error:", err)
		return
	}

	if err = writer.Flush(); err != nil {
		fmt.Println("Flush Error:", err)
		return
	}

	fmt.Println("Bytes written:", n)
	fmt.Println("Buffer contents:", buf.String())
	// Output:
	// Bytes written: 41
	// Buffer contents: Hello, world!

            run("git", "checkout", commit, "--quiet", "--detach");
            String wrapperVersion = readWrapperVersion();
            System.out.println("Commit " + commit + " wrapper: " + wrapperVersion);
            if (!ALLOWED_WRAPPER_VERSION.matcher(wrapperVersion).matches()) {
                System.err.println(
                    "Bad wrapper version " + wrapperVersion + " used in commit " + commit

		fail("did not find mobile provision matching device udids %q", udids)
	}

	fmt.Println("# Available provisioning profiles below.")
	fmt.Println("# NOTE: Any existing app on the device with the app id specified by GOIOS_APP_ID")
	fmt.Println("# will be overwritten when running Go programs.")
	for _, mp := range mps {
		fmt.Println()
		f, err := os.CreateTemp("", "go_ios_detect_")
		check(err)
		fname := f.Name()

		go func() {
			if o.blockConnect != nil {
				<-o.blockConnect
			}
			c.connect()
		}()
	}
	if debugPrint {
		fmt.Println(c.Local, "->", c.Remote, "Should local connect:", c.shouldConnect(), "side:", c.side)
	}
	if debugReqs {
		fmt.Println("Created connection", c.String())
	}
	return c
}

// Subroute returns a static subroute for the connection.

			t.Fatalf("%d: %v", i, err)
		}
		// repr.Println(id, repr.Indent("  "), repr.OmitEmpty(true))
	}

	invalidCases := []string{
		"+a",
		"-a",
		"1a",
		`"ab`,
		`abc"`,
		`aa""a`,
		`"a"a"`,
	}
	for i, tc := range invalidCases {
		err := p.ParseString(tc, &id)
		if err == nil {
			t.Fatalf("%d: %v", i, err)
		}
		// fmt.Println(tc, err)
	}
}

import (
	"fmt"

	"github.com/smallnest/ringbuffer"
)

func main() {
	rb := ringbuffer.New(1024)

	// write
	rb.Write([]byte("abcd"))
	fmt.Println(rb.Length())
	fmt.Println(rb.Free())

	// read
	buf := make([]byte, 4)
	rb.Read(buf)
	fmt.Println(string(buf))
}
```

It is possible to use an existing buffer with by replacing `New` with `NewBuffer`.


# Blocking vs Non-blocking

			continue
		}
		r, err := parseGoroutineType2(arg)
		if err != nil {
			log.Fatal(err)
		}

		profFName := path.Base(arg)
		fmt.Println(strings.Repeat("=", len(profFName)))
		fmt.Println(profFName)
		fmt.Println(strings.Repeat("=", len(profFName)))
		fmt.Println("")

		for t, stacks := range r {
			if less != 0 && t >= less {
				continue
			}