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adam.huang
go-libp2p
Commits
647d20ae
Commit
647d20ae
authored
8 years ago
by
Jeromy Johnson
Committed by
GitHub
8 years ago
Browse files
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Merge pull request #146 from libp2p/fix/examples
Update examples
parents
1c10ed41
f3812dec
master
2018-Q4-OKR
docs-improvements
feat/p2p-multiaddr
feat/pnet/working3
feat/protobuf
feat/relay-integrate
feat/udp
feature/standardize-readme
fix/473
fix/no-custom-field
fix/reset-ping-stream
fix/revert-correct-external-addr
gx/update-jccl6u
gx/update-nza0mn
jenkinsfile
kevina/fix-go-vet
multistream-ping
punching
revert-276-update-go-detect-race
v6.0.23
v6.0.22
v6.0.21
v6.0.20
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Changes
5
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5 changed files
examples/echo/README.md
+41
-0
examples/echo/README.md
examples/echo/main.go
+18
-19
examples/echo/main.go
examples/hosts/README.md
+0
-28
examples/hosts/README.md
examples/justtcp/README.md
+0
-16
examples/justtcp/README.md
examples/justtcp/main.go
+0
-59
examples/justtcp/main.go
with
59 additions
and
122 deletions
+59
-122
examples/echo/README.md
0 → 100644
View file @
647d20ae
# Echo client/server with libp2p
This example can be started in either listen mode (server), or dial mode (client).
In listen mode, it will sit and wait for incoming connections on
the
`/echo/1.0.0`
protocol. Whenever it receives a stream, it will
write whatever message it received, and close the stream.
In dial mode, it will connect to the target peer on the given address.
It then opens a stream, writes a short message on the same protocol,
and print whatever reply it receives.
## Build
```
> make deps
> go build ./examples/hosts
```
## Usage
In one terminal:
```
> ./hosts -l 4737
2016/11/06 04:37:00 I am /ip4/127.0.0.1/tcp/4737/ipfs/QmXzbaXtBw6mU29WoeYrCtcRLVbT8asWCcEFVuDy4w6pdq
2016/11/06 04:37:00 listening for connections
2016/11/06 04:37:01 got a new stream
2016/11/06 04:37:01 read request: "Hello, world!"
```
In another, copy the address printed by the listener and do:
```
> ./hosts -d /ip4/127.0.0.1/tcp/4737/ipfs/QmXzbaXtBw6mU29WoeYrCtcRLVbT8asWCcEFVuDy4w6pdq
2016/11/06 04:37:01 I am /ip4/127.0.0.1/tcp/0/ipfs/QmeMNYMmkgoyd8M7y925r4yVVDjKtiYtU4rNCyj7wDWzk1
2016/11/06 04:37:01 connecting to target
2016/11/06 04:37:01 opening stream
2016/11/06 04:37:01 read reply: "Hello, world!"
>
```
This diff is collapsed.
Click to expand it.
examples/ho
sts
/main.go
→
examples/
ec
ho/main.go
View file @
647d20ae
...
...
@@ -67,7 +67,7 @@ func main() {
flag
.
Parse
()
listenaddr
:=
fmt
.
Sprintf
(
"/ip4/
0
.0.0.
0
/tcp/%d"
,
*
listenF
)
listenaddr
:=
fmt
.
Sprintf
(
"/ip4/
127
.0.0.
1
/tcp/%d"
,
*
listenF
)
ha
,
err
:=
makeDummyHost
(
listenaddr
,
*
secio
)
if
err
!=
nil
{
...
...
@@ -76,12 +76,13 @@ func main() {
// Set a stream handler on host A
ha
.
SetStreamHandler
(
"/echo/1.0.0"
,
func
(
s
net
.
Stream
)
{
log
.
Println
(
"Got a new stream!"
)
log
.
Println
(
"got a new stream"
)
doEcho
(
s
)
defer
s
.
Close
()
})
if
*
target
==
""
{
log
.
Println
(
"listening for connections
...
"
)
log
.
Println
(
"listening for connections"
)
select
{}
// hang forever
}
...
...
@@ -117,15 +118,15 @@ func main() {
log
.
Fatalln
(
err
)
}
log
.
Println
(
"opening stream
...
"
)
log
.
Println
(
"opening stream"
)
// make a new stream from host B to host A
// it should be handled on host A by the handler we set
s
,
err
:=
ha
.
NewStream
(
context
.
Background
(),
peerid
,
"/
hell
o/1.0.0"
)
s
,
err
:=
ha
.
NewStream
(
context
.
Background
(),
peerid
,
"/
ech
o/1.0.0"
)
if
err
!=
nil
{
log
.
Fatalln
(
err
)
}
_
,
err
=
s
.
Write
([]
byte
(
"Hello world
of peer two peer
"
))
_
,
err
=
s
.
Write
([]
byte
(
"Hello
,
world
!
"
))
if
err
!=
nil
{
log
.
Fatalln
(
err
)
}
...
...
@@ -135,23 +136,21 @@ func main() {
log
.
Fatalln
(
err
)
}
log
.
Print
ln
(
"GOT: "
,
string
(
out
)
)
log
.
Print
f
(
"read reply: %q
\n
"
,
out
)
}
func
doEcho
(
s
inet
.
Stream
)
{
buf
:=
make
([]
byte
,
1024
)
for
{
n
,
err
:=
s
.
Read
(
buf
)
if
err
!=
nil
{
log
.
Println
(
err
)
return
}
n
,
err
:=
s
.
Read
(
buf
)
if
err
!=
nil
{
log
.
Println
(
err
)
return
}
log
.
Printf
(
"read data: %q
\n
"
,
buf
[
:
n
])
_
,
err
=
s
.
Write
(
buf
[
:
n
])
if
err
!=
nil
{
log
.
Println
(
err
)
return
}
log
.
Printf
(
"read request: %q
\n
"
,
buf
[
:
n
])
_
,
err
=
s
.
Write
(
buf
[
:
n
])
if
err
!=
nil
{
log
.
Println
(
err
)
return
}
}
This diff is collapsed.
Click to expand it.
examples/hosts/README.md
deleted
100644 → 0
View file @
1c10ed41
# libp2p host example
## What this does
This example can be started in either listen mode, or dial mode.
When running as a listener, it will sit and wait for incoming connections on
the
`/hello/1.0.0`
protocol. Whenever it receives a stream, it will
write the message "hello libp2p" over the stream and close it.
When run in dial mode, the node will start up, connect to the given
address, open a stream to the target peer, and read a message on the
protocol
`/hello/1.0.0`
## Building
```
$ go build
```
## Usage
In one terminal:
```
$ ./hosts -l 4737
```
In another, copy the address printed by the listener and do:
```
$ ./hosts -d ADDRESS
```
This diff is collapsed.
Click to expand it.
examples/justtcp/README.md
deleted
100644 → 0
View file @
1c10ed41
# libp2p 'just tcp' example
## What this does
This example starts up a libp2p swarm that listens for tcp connections behind a
multistream muxer protocol of
`/plaintext/1.0.0`
. All connections made to it
will be echoed back.
## Building
```
$ go build
```
## Usage
```
$ ./justtcp
```
This diff is collapsed.
Click to expand it.
examples/justtcp/main.go
deleted
100644 → 0
View file @
1c10ed41
package
main
import
(
"context"
"fmt"
"os"
"github.com/libp2p/go-libp2p-swarm"
tcpt
"github.com/libp2p/go-tcp-transport"
ma
"github.com/multiformats/go-multiaddr"
)
func
fatal
(
i
interface
{})
{
fmt
.
Println
(
i
)
os
.
Exit
(
1
)
}
func
main
()
{
laddr
,
err
:=
ma
.
NewMultiaddr
(
"/ip4/0.0.0.0/tcp/5555"
)
if
err
!=
nil
{
fatal
(
err
)
}
// create a new swarm with a dummy peer ID, no private key, and no stream muxer
s
:=
swarm
.
NewBlankSwarm
(
context
.
Background
(),
"bob"
,
nil
,
nil
)
// Add a TCP transport to it
s
.
AddTransport
(
tcpt
.
NewTCPTransport
())
// Add an address to start listening on
err
=
s
.
AddListenAddr
(
laddr
)
if
err
!=
nil
{
fatal
(
err
)
}
// Set a handler for incoming connections
s
.
SetConnHandler
(
func
(
c
*
swarm
.
Conn
)
{
fmt
.
Println
(
"Got a new connection!"
)
defer
c
.
Close
()
buf
:=
make
([]
byte
,
1024
)
for
{
n
,
err
:=
c
.
RawConn
()
.
Read
(
buf
)
if
err
!=
nil
{
fmt
.
Println
(
err
)
return
}
fmt
.
Printf
(
"read: %q
\n
"
,
string
(
buf
[
:
n
]))
_
,
err
=
c
.
RawConn
()
.
Write
(
buf
[
:
n
])
if
err
!=
nil
{
fmt
.
Println
(
err
)
return
}
}
})
// Wait forever
<-
make
(
chan
bool
)
}
This diff is collapsed.
Click to expand it.
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