Matthew R. Wilson
b6fa48f37f
This is a relatively big new feature, which introduces small breaking changes to the API: * NegotiateTelnet() now returns (DevInfo, error) instead of just error. The function signature for the Tx type now has one additional DevInfo parameter. * RunTransactions() requires one additional parameter, the DevInfo (which is allowed to be nil). Otherwise, existing behavior continues to work as-is and everything still defaults to operating on the default 24x80 terminal size. See example5 for a larger-terminal-aware application. Pending some time to make sure no new bugs cropped up in this release and that the alternate screen size support works in the wild, I anticipate this will become the v1.0.0 release of go3270.
49 lines
1.0 KiB
Go
49 lines
1.0 KiB
Go
// This file is part of https://github.com/racingmars/go3270/
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// Copyright 2025 by Matthew R. Wilson, licensed under the MIT license. See
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// LICENSE in the project root for license information.
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// Example 5 demonstrates support for larger-than-default alternate screen
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// sizes in terminals that are larger than 24x80.
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package main
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import (
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"fmt"
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"net"
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"github.com/racingmars/go3270"
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)
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func main() {
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ln, err := net.Listen("tcp", ":3270")
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if err != nil {
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panic(err)
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}
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fmt.Println("LISTENING ON PORT 3270 FOR CONNECTIONS")
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fmt.Println("Press Ctrl-C to end server.")
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for {
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conn, err := ln.Accept()
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if err != nil {
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panic(err)
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}
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go handle(conn)
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}
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}
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// handle is the handler for individual user connections.
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func handle(conn net.Conn) {
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defer conn.Close()
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// Always begin new connection by negotiating the telnet options
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devinfo, err := go3270.NegotiateTelnet(conn)
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if err != nil {
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fmt.Println(err)
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return
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}
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err = go3270.RunTransactions(conn, devinfo, bigscreen, nil)
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if err != nil {
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fmt.Println(err)
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}
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}
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