---
name: "bpecho"
section: "1"
platform: "linux"
package: "ion"
version: "3.2.1+dfsg-1.1"
release: "Debian 9 (Stretch)"
platforms: ["linux"]
url: "https://new.carta.tech/bpecho"
---

# bpecho(1)

Bundle Protocol reception test program

## NAME

bpecho - Bundle Protocol reception test program

## SYNOPSIS

**bpecho** *ownEndpointId*

## DESCRIPTION

**bpecho** uses Bundle Protocol to receive application data units from a remote **bpdriver** application task.  In response to each received application data unit it sends back an "echo" application data unit of length 2, the NULL-terminated string "x".

**bpecho** terminates upon receiving the SIGQUIT signal, i.e., ^C from the keyboard.

## EXIT STATUS

- "0"

  **bpecho** has terminated normally.  Any problems encountered during operation will be noted in the **ion.log** log file.

- "1"

  **bpecho** has terminated due to a BP reception failure.  Details should be noted in the **ion.log** log file.

## FILES

No configuration files are needed.

## ENVIRONMENT

No environment variables apply.

## DIAGNOSTICS

Diagnostic messages produced by **bpecho** are written to the ION log file *ion.log*.

- Can't attach to BP.

  **bpadmin** has not yet initialized Bundle Protocol operations.

- Can't open own endpoint.

  Another application has already opened *ownEndpointId*.  Terminate that application and rerun.

- bpecho bundle reception failed.

  BP system error.  Check for earlier diagnostic messages describing the cause of the error; correct problem and rerun.

- No space for ZCO extent.

  ION system error.  Check for earlier diagnostic messages describing the cause of the error; correct problem and rerun.

- Can't create ZCO.

  ION system error.  Check for earlier diagnostic messages describing the cause of the error; correct problem and rerun.

- bpecho can't send echo bundle.

  BP system error.  Check for earlier diagnostic messages describing the cause of the error; correct problem and rerun.

## BUGS

Report bugs to \<ion-bugs@korgano.eecs.ohiou.edu\>

## SEE ALSO

[*bpadmin*(1)](/bpadmin/1.md), [*bpdriver*(1)](/bpdriver/1.md), [*bpcounter*(1)](/bpcounter/1.md), [*bp*(3)](/bp/3.md)