blob: 66e7f16a217ab1ae240b46e6f3ba7138e0dec0d1 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
package main
import (
"bufio"
"encoding/json"
"log"
"math"
"net"
)
func main() {
listener, err := net.Listen("tcp", "0.0.0.0:7000")
if err != nil {
panic(err)
}
for {
go handle(listener.Accept())
}
}
func handle(conn net.Conn, err error) {
if err != nil {
log.Println(err)
return
}
defer conn.Close()
reader := bufio.NewScanner(conn)
writer := json.NewEncoder(conn)
for reader.Scan() {
log.Println("received ", reader.Text())
var req struct {
Method string `json:"method"`
Number *float64 `json:"number"`
}
if err := json.Unmarshal(reader.Bytes(), &req); err != nil {
log.Println(err)
return
}
if req.Method != "isPrime" || req.Number == nil {
_, err := conn.Write([]byte("you dingus"))
if err != nil {
log.Println(err)
}
return
}
res := struct {
Method string `json:"method"`
Prime bool `json:"prime"`
}{Method: "isPrime"}
n := int64(*req.Number)
if *req.Number == float64(n) {
res.Prime = isPrime(n)
}
if err := writer.Encode(res); err != nil {
log.Println(err)
return
}
}
}
func isPrime(n int64) bool {
max := int64(math.Sqrt(float64(n)))
for i := int64(2); i <= max; i++ {
if n%i == 0 {
return false
}
}
return n > 1
}
|
