src/cypherpunks.ru/nncp/call.go

   1 /*
   2 NNCP -- Node to Node copy, utilities for store-and-forward data exchange
   3 Copyright (C) 2016-2019 Sergey Matveev <stargrave@stargrave.org>
   4
   5 This program is free software: you can redistribute it and/or modify
   6 it under the terms of the GNU General Public License as published by
   7 the Free Software Foundation, either version 3 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17 */
  18
  19 package nncp
  20
  21 import (
  22         "net"
  23         "strconv"
  24
  25         "github.com/gorhill/cronexpr"
  26 )
  27
  28 type Call struct {
  29         Cron           *cronexpr.Expression
  30         Nice           uint8
  31         Xx             TRxTx
  32         RxRate         int
  33         TxRate         int
  34         Addr           *string
  35         OnlineDeadline uint
  36         MaxOnlineTime  uint
  37 }
  38
  39 func (ctx *Ctx) CallNode(
  40         node *Node,
  41         addrs []string,
  42         nice uint8,
  43         xxOnly TRxTx,
  44         rxRate, txRate int,
  45         onlineDeadline, maxOnlineTime uint) (isGood bool) {
  46         for _, addr := range addrs {
  47                 sds := SDS{"node": node.Id, "addr": addr}
  48                 ctx.LogD("call", sds, "dialing")
  49                 conn, err := net.Dial("tcp", addr)
  50                 if err != nil {
  51                         ctx.LogD("call", SdsAdd(sds, SDS{"err": err}), "dialing")
  52                         continue
  53                 }
  54                 ctx.LogD("call", sds, "connected")
  55                 state, err := ctx.StartI(
  56                         conn,
  57                         node.Id,
  58                         nice,
  59                         xxOnly,
  60                         rxRate,
  61                         txRate,
  62                         onlineDeadline,
  63                         maxOnlineTime,
  64                 )
  65                 if err == nil {
  66                         ctx.LogI("call-start", sds, "connected")
  67                         state.Wait()
  68                         ctx.LogI("call-finish", SDS{
  69                                 "node":     state.Node.Id,
  70                                 "duration": strconv.FormatInt(int64(state.Duration.Seconds()), 10),
  71                                 "rxbytes":  strconv.FormatInt(state.RxBytes, 10),
  72                                 "txbytes":  strconv.FormatInt(state.TxBytes, 10),
  73                                 "rxspeed":  strconv.FormatInt(state.RxSpeed, 10),
  74                                 "txspeed":  strconv.FormatInt(state.TxSpeed, 10),
  75                         }, "")
  76                         isGood = true
  77                         conn.Close()
  78                         break
  79                 } else {
  80                         ctx.LogE("call-start", SdsAdd(sds, SDS{"err": err}), "")
  81                         conn.Close()
  82                 }
  83         }
  84         return
  85 }