Protocol

HS FTP Library
Free - Hillstone Software

HS FTP is a software library which implements the client side of the File Transfer Protocol over TCP socket layer according to RFC 959. The library allows a user application to connect to remote FTP servers, traverse server directory structure and send and receive files. The HS FTP protocol module supports passive mode data connections, user / password authentication and a number of commonly used FTP commands

voip, protocol module, instant messaging, jabber, phone, yahoo, winsock, voip provider, unified teamwork, collanos software, sip phone

---

Wireshark
Free - Wireshark development team

Wireshark is the world's foremost network protocol analyzer, and is the standard in many industries. It is the continuation of a project that started in 1998. Hundreds of developers around the world have contributed to it, and it is still under active development. It is cross-platform, features both GUI and CLI interfaces, and supports deep analysis of hundreds of protocols.

video, voice services, router, voice, collanos phone, unified collaboration, cisco, protocol library, c source module, server, c source library

---

HS SMTP Lite
Free - Hillstone Software

HS SMTP LITE is a software library in C (supplied with full source code) which implements the client side of Simple Mail Transfer Protocol (SMTP) over TCP socket layer according to RFC 821. Supports transfer of text and file attachments. HS SMTP Library incorporates the necessary state machine, transparency procedures, and server response processing required to comply to a simple and robust SMTP client implementation.

protocol analyzer, protocols, network, communication protocol, packet analyzer, protocol poster, switch, ethernet, wlan, tcpip, networking

---

HS X.25 C Source Library
Free - Hillstone Software

HS X.25 is a software library in C (supplied with full source code) which implements ITU-T recommendation X.25 - Interface between Data Terminal Equipment (DTE) and Data Circuit-terminating Equipment (DCE) for terminals operating in the packet mode and connected to public data networks by dedicated circuit. Includes HsDL (Data Link) and HsSock (Winsock interface) for X.25 over IP applications (XOT))

troubleshooting, monitor, sniffer, pop3, smtp, snmp, ftp client, management, x 25 over tcp, tftp, secure

---

HS POP3 Library
Free - Hillstone Software

HS POP3 is a software library in C (supplied with full source code) which implements the client side of Post Office Protocol Version 3 (POP3) over TCP socket layer according to RFC 1939. Among other features, the library supports user authentication, reception of basic internet headers and text, message deletion and statistics. HS POP3 Library incorporates the necessary state machine, transparency procedures, server response processing etc.

legacy, packet sniffer, itu t x 25, monitoring, x 25, x 25 protocol, x 25 over ip, legacy migration, analyzer, ftp source, file transfer protocol

---

HS XMODEM C Source Library
Free - Hillstone Software

HS XMODEM is a software library in C (supplied with full source code) that provides a programmer with the off-the-shelf support for XMODEM protocol data transfer capability. Support for both sender and receiver are provided. Other features include 1024 block size vs 128, CRC vs checksum, configurable timers and retries.

ethereal, rfc959, email, mime, encryption, base64 tcp, rfc821, graph, recommendation x 25, xmodem, rfc1939

---