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p2p
go-p2p-tls
Commits
7b8ba831
Commit
7b8ba831
authored
Feb 20, 2019
by
Marten Seemann
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add an example server and client
parent
3a88d269
Changes
3
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example/README.md
example/README.md
+6
-0
example/client/main.go
example/client/main.go
+68
-0
example/server/main.go
example/server/main.go
+73
-0
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example/README.md
0 → 100644
View file @
7b8ba831
# TLS handshake example
Run
```
bash
go run example/server/main.go
```
example/client/main.go
0 → 100644
View file @
7b8ba831
package
main
import
(
"context"
"crypto/rand"
"flag"
"fmt"
"io/ioutil"
"net"
"time"
ic
"github.com/libp2p/go-libp2p-crypto"
peer
"github.com/libp2p/go-libp2p-peer"
libp2ptls
"github.com/libp2p/go-libp2p-tls"
)
func
main
()
{
if
err
:=
startClient
();
err
!=
nil
{
panic
(
err
)
}
}
func
startClient
()
error
{
port
:=
flag
.
Int
(
"p"
,
5533
,
"port"
)
peerIDString
:=
flag
.
String
(
"id"
,
""
,
"peer ID"
)
flag
.
Parse
()
peerID
,
err
:=
peer
.
IDB58Decode
(
*
peerIDString
)
if
err
!=
nil
{
return
err
}
priv
,
_
,
err
:=
ic
.
GenerateECDSAKeyPair
(
rand
.
Reader
)
if
err
!=
nil
{
return
err
}
id
,
err
:=
peer
.
IDFromPrivateKey
(
priv
)
if
err
!=
nil
{
return
err
}
fmt
.
Printf
(
"Generated new peer with an ECDSA key. Peer ID: %s
\n
"
,
id
.
Pretty
())
tp
,
err
:=
libp2ptls
.
New
(
priv
)
if
err
!=
nil
{
return
err
}
remoteAddr
:=
fmt
.
Sprintf
(
"localhost:%d"
,
*
port
)
fmt
.
Printf
(
"Dialing %s
\n
"
,
remoteAddr
)
conn
,
err
:=
net
.
Dial
(
"tcp"
,
remoteAddr
)
if
err
!=
nil
{
return
err
}
fmt
.
Printf
(
"Dialed raw connection to %s
\n
"
,
conn
.
RemoteAddr
())
ctx
,
cancel
:=
context
.
WithTimeout
(
context
.
Background
(),
10
*
time
.
Second
)
defer
cancel
()
sconn
,
err
:=
tp
.
SecureOutbound
(
ctx
,
conn
,
peerID
)
if
err
!=
nil
{
return
err
}
fmt
.
Printf
(
"Authenticated server: %s
\n
"
,
sconn
.
RemotePeer
()
.
Pretty
())
data
,
err
:=
ioutil
.
ReadAll
(
sconn
)
if
err
!=
nil
{
return
err
}
fmt
.
Printf
(
"Received message from server: %s
\n
"
,
string
(
data
))
return
nil
}
example/server/main.go
0 → 100644
View file @
7b8ba831
package
main
import
(
"context"
"crypto/rand"
"flag"
"fmt"
"net"
"time"
ic
"github.com/libp2p/go-libp2p-crypto"
peer
"github.com/libp2p/go-libp2p-peer"
libp2ptls
"github.com/libp2p/go-libp2p-tls"
)
func
main
()
{
if
err
:=
startServer
();
err
!=
nil
{
panic
(
err
)
}
}
func
startServer
()
error
{
port
:=
flag
.
Int
(
"p"
,
5533
,
"port"
)
flag
.
Parse
()
priv
,
_
,
err
:=
ic
.
GenerateECDSAKeyPair
(
rand
.
Reader
)
if
err
!=
nil
{
return
err
}
id
,
err
:=
peer
.
IDFromPrivateKey
(
priv
)
if
err
!=
nil
{
return
err
}
fmt
.
Printf
(
"Generated new peer with an ECDSA key. Peer ID: %s
\n
"
,
id
.
Pretty
())
tp
,
err
:=
libp2ptls
.
New
(
priv
)
if
err
!=
nil
{
return
err
}
ln
,
err
:=
net
.
Listen
(
"tcp"
,
fmt
.
Sprintf
(
"localhost:%d"
,
*
port
))
if
err
!=
nil
{
return
err
}
fmt
.
Printf
(
"Listening for new connections on %s
\n
"
,
ln
.
Addr
())
fmt
.
Printf
(
"Now run the following command in a separate terminal:
\n
"
)
fmt
.
Printf
(
"
\t
go run example/client/main.go -p %d -id %s
\n
"
,
*
port
,
id
.
Pretty
())
for
{
conn
,
err
:=
ln
.
Accept
()
if
err
!=
nil
{
return
err
}
fmt
.
Printf
(
"Accepted raw connection from %s
\n
"
,
conn
.
RemoteAddr
())
go
func
()
{
if
err
:=
handleConn
(
tp
,
conn
);
err
!=
nil
{
fmt
.
Printf
(
"Error handling connection from %s: %s
\n
"
,
conn
.
RemoteAddr
(),
err
)
}
}()
}
}
func
handleConn
(
tp
*
libp2ptls
.
Transport
,
conn
net
.
Conn
)
error
{
ctx
,
cancel
:=
context
.
WithTimeout
(
context
.
Background
(),
10
*
time
.
Second
)
defer
cancel
()
sconn
,
err
:=
tp
.
SecureInbound
(
ctx
,
conn
)
if
err
!=
nil
{
return
err
}
fmt
.
Printf
(
"Authenticated client: %s
\n
"
,
sconn
.
RemotePeer
()
.
Pretty
())
fmt
.
Fprintf
(
sconn
,
"Hello client!"
)
fmt
.
Printf
(
"Closing connection to %s
\n
"
,
conn
.
RemoteAddr
())
return
sconn
.
Close
()
}
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