reorg test structure to match tox and CI jobs, drop bumpversion for bump-my-version and move config to pyproject.toml, fix docs building

tests/interop/go_pkgs/examples/echo/main.go

@@ -0,0 +1,137 @@
+package main
+
+import (
+	"bufio"
+	"context"
+	"flag"
+	"fmt"
+	"io/ioutil"
+	"log"
+
+	utils "interop/utils"
+
+	"github.com/libp2p/go-libp2p-core/network"
+	"github.com/libp2p/go-libp2p-core/peer"
+	"github.com/libp2p/go-libp2p-core/peerstore"
+
+	golog "github.com/ipfs/go-log"
+	ma "github.com/multiformats/go-multiaddr"
+)
+
+func main() {
+	// LibP2P code uses golog to log messages. They log with different
+	// string IDs (i.e. "swarm"). We can control the verbosity level for
+	// all loggers with:
+	golog.SetAllLoggers(golog.LevelDebug) // Change to DEBUG for extra info
+
+	// Parse options from the command line
+	listenF := flag.Int("l", 0, "wait for incoming connections")
+	target := flag.String("d", "", "target peer to dial")
+	protocolID := flag.String("security", "", "security protocol used for secure channel")
+	seed := flag.Int64("seed", 0, "set random seed for id generation")
+	flag.Parse()
+
+	if *listenF == 0 {
+		log.Fatal("Please provide a port to bind on with -l")
+	}
+
+	// Make a host that listens on the given multiaddress
+	ha, err := utils.MakeBasicHost(*listenF, *protocolID, *seed)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	// Set a stream handler on host A. /echo/1.0.0 is
+	// a user-defined protocol name.
+	ha.SetStreamHandler("/echo/1.0.0", func(s network.Stream) {
+		log.Println("Got a new stream!")
+		if err := doEcho(s); err != nil {
+			log.Println(err)
+			s.Reset()
+		} else {
+			s.Close()
+		}
+	})
+
+	if *target == "" {
+		log.Println("listening for connections")
+		select {} // hang forever
+	}
+	/**** This is where the listener code ends ****/
+
+	// The following code extracts target's the peer ID from the
+	// given multiaddress
+	ipfsaddr, err := ma.NewMultiaddr(*target)
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	pid, err := ipfsaddr.ValueForProtocol(ma.P_IPFS)
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	peerid, err := peer.IDB58Decode(pid)
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	// Decapsulate the /ipfs/<peerID> part from the target
+	// /ip4/<a.b.c.d>/ipfs/<peer> becomes /ip4/<a.b.c.d>
+	targetPeerAddr, _ := ma.NewMultiaddr(
+		fmt.Sprintf("/ipfs/%s", peer.IDB58Encode(peerid)))
+	targetAddr := ipfsaddr.Decapsulate(targetPeerAddr)
+	log.Println("!@# targetAddr=", targetAddr)
+
+	// We have a peer ID and a targetAddr so we add it to the peerstore
+	// so LibP2P knows how to contact it
+	ha.Peerstore().AddAddr(peerid, targetAddr, peerstore.PermanentAddrTTL)
+
+	log.Println("!@# ipfsaddr=", ipfsaddr)
+	pinfo, err := peer.AddrInfoFromP2pAddr(ipfsaddr)
+	if err != nil {
+		log.Fatalf("failed to parse %v to pinfo\n", ipfsaddr)
+	}
+
+	err = ha.Connect(context.Background(), *pinfo)
+	if err != nil {
+		panic(err)
+	}
+
+	log.Println("connect with peer", *pinfo)
+
+	// make a new stream from host B to host A
+	// it should be handled on host A by the handler we set above because
+	// we use the same /echo/1.0.0 protocol
+	s, err := ha.NewStream(context.Background(), peerid, "/echo/1.0.0")
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	log.Println("opened stream")
+
+	_, err = s.Write([]byte("Hello, world!\n"))
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	out, err := ioutil.ReadAll(s)
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	log.Printf("read reply: %q\n", out)
+}
+
+// doEcho reads a line of data a stream and writes it back
+func doEcho(s network.Stream) error {
+	buf := bufio.NewReader(s)
+	str, err := buf.ReadString('\n')
+	if err != nil {
+		return err
+	}
+
+	log.Printf("read: %s\n", str)
+	_, err = s.Write([]byte(str))
+	return err
+}