try fix

src/recipient/recipient.go

@@ -3,7 +3,6 @@ package recipient
 import (
 	"bytes"
 	"encoding/json"
-	"errors"
 	"fmt"
 	"io/ioutil"
 	"net"
@@ -14,6 +13,7 @@ import (
 	"time"
 
 	humanize "github.com/dustin/go-humanize"
+	"github.com/pkg/errors"
 
 	log "github.com/cihub/seelog"
 	"github.com/gorilla/websocket"
@@ -407,10 +407,15 @@ func receive(forceSend int, serverAddress string, tcpPorts []string, isLocal boo
 
 func connectToTCPServer(room string, address string) (com *comm.Comm, err error) {
 	log.Debugf("recipient connecting to %s", address)
-	connection, err := net.Dial("tcp", address)
+	rAddr, err := net.ResolveTCPAddr("tcp", address)
 	if err != nil {
 		return
 	}
+	connection, err := net.DialTCP("tcp", nil, rAddr)
+	if err != nil {
+		err = errors.Wrap(err, "bad connection to tcp")
+		return
+	}
 	connection.SetReadDeadline(time.Now().Add(3 * time.Hour))
 	connection.SetDeadline(time.Now().Add(3 * time.Hour))
 	connection.SetWriteDeadline(time.Now().Add(3 * time.Hour))

src/sender/sender.go

@@ -408,10 +408,15 @@ func send(forceSend int, serverAddress string, tcpPorts []string, isLocal bool,
 }
 
 func connectToTCPServer(room string, address string) (com *comm.Comm, err error) {
-	connection, err := net.Dial("tcp", address)
+	rAddr, err := net.ResolveTCPAddr("tcp", address)
 	if err != nil {
 		return
 	}
+	connection, err := net.DialTCP("tcp", nil, rAddr)
+	if err != nil {
+		err = errors.Wrap(err, "bad connection to tcp")
+		return
+	}
 	connection.SetReadDeadline(time.Now().Add(3 * time.Hour))
 	connection.SetDeadline(time.Now().Add(3 * time.Hour))
 	connection.SetWriteDeadline(time.Now().Add(3 * time.Hour))

src/tcp/tcp.go

@@ -42,7 +42,7 @@ func Run(debugLevel, port string) {
 
 func run(port string) (err error) {
 	log.Debugf("starting TCP server on " + port)
-	rAddr, err := net.ResolveTCPAddr("tcp", "localhost:"+port)
+	rAddr, err := net.ResolveTCPAddr("tcp", "0.0.0.0:"+port)
 	if err != nil {
 		panic(err)
 	}