TTCPStream Class

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Interfaces — Classes — Aliases — Implements

Overview

The TTCPStream class is an abstract class for communicating through the TCP protocol. The TZeroConfHubClient uses it as an opaque communication channel (via the abstract method TZeroConfHubClient.CreateTCPClient). Currently, the TROHubSynapseTCPClient class realizes a TTCPStream to provide a TZeroConfHubSynapseClient with a communication channel. You can supply your own implementation, if, for example, you need to use a different communication library.

Location

uROZeroConfStreamWorker.pas TTCPStream | Descendants

Properties

Connected
Reports if there is an active connection. property Connected: Boolean read

Instance Methods

constructor Create   virtual
constructor Create
destructor Destroy   override
destructor Destroy
Connect   virtual abstract
Abstract method to establish a connection to AHost on port aPort. procedure Connect(AHost: string; aPort: Integer) Parameters: AHost: Destination IP aPort: Destination port
GetConnected   protected virtual abstract
Abstract method that reports all active connections. function GetConnected: Boolean
Read   virtual abstract
Abstract method to read Count bytes into the Buffer and return the number of bytes actually read. function Read(Buffer: Pointer; Count: Longint): Longint Parameters: Buffer: Points to the destination buffer Count: Specifies the number of bytes of data to attempt to read
ReadExact
Uses Read to read exactly Count bytes into the Buffer and return the number of bytes actually read. It may return a value less than Count if Connected becomes False while reading. function ReadExact(Buffer: Pointer; Count: Longint): Longint Parameters: Buffer: Points to the destination buffer Count: Specifies the number of bytes of data to attempt to read
Stop   virtual abstract
Abstract method to cancel all active data transferring. procedure Stop
TryConnect   virtual abstract
Abstract method to establish a connection to AHost on port aPort in a non-blocking manner. function TryConnect(AHost: string; aPort: Integer): Boolean Parameters: AHost: Destination IP aPort: Destination port
Write   virtual abstract
Abstract method to write Count bytes from the Buffer and return the number of bytes actually written. function Write(const Buffer: ; Count: Longint): Longint Parameters: Buffer: Points to the source buffer Count: Specifies the number of bytes of data to attempt to write

Descendants

• TROHubSynapseTCPClient

See Also

• TZeroConfHubClient
• TROHubSynapseTCPClient
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