Envoy Application Programming Manual
Table Of Contents
- What’s New in This Manual
- About This Manual
- 1 Application Programming With Envoy
- 7 ADM-2 Multipoint Supervisor Protocol
- 8 TINET Multipoint Supervisor Protocol
- 9 Burroughs Point-To-Point Protocol
- 10 Asynchronous Line Supervisor Protocol
- A ASCII Character Set
- B ASCII to EBCDIC Code Conversion
- C File-System Procedures
- D Statistics Messages
- E S-Series Changes to Envoy
- NonStop™ Himalaya S-Series Server Architecture
- G-Series Migration Considerations
- CBSENSEON and CFSENSEON Modifiers
- LEOTRESYN and NOLEOTRESYN Modifiers
- Treatment of Characters After the Termination Character
- Number of SYN Characters
- DTR Drop
- Reporting of Parity Error
- Half-Duplex Support for Asynchronous Lines
- Controller Replacement
- SYSGEN and COUP
- Unit Numbers
- FDX Line Changes
- No Support for Auto-Call Unit
- Glossary
- Index
Full-Duplex Protocol
Envoy Application Programming Manual—427159-001
6-7
Normal Text
The following types of message formats are allowed:
•
Normal Text on page 6-7
•
Transparent Text on page 6-7
•
Headings on page 6-7
Normal Text
Normal text is indicated by messages having the following form:
message = STX—text—ETB
message = STX—text—ETX
(message length = 2 + text length)
Transparent Text
Transparent text is indicated by messages having the following form:
message = DLE STX—text—ETB
message = DLE STX—text—ETX
(message length = 3 + text length)
Envoy automatically performs DLE insertion and deletion. The application process
sends and receives only the original binary text.
Headings
Headings use the formats shown in Table 6-3.
Table 6-3. Formats for Headings
Headings Format
Heading only SOH-heading-ETB
SOH-heading-ETX
Heading and normal text SOH-heading-STX-text-ETB
SOH-heading-STX-text-ETX
Heading and transparent text SOH-heading-DLE STX-text-ETB
SOH-heading-DLE STX-text-ETX