How to send data using tcp/ip from raspberrypi to windows form

어디에서 어디를 호출할지. ^^; 그림 좀 그려보고 짜보자구

server - link link2 (enrol_method) (nonblocking_mode)

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(noblocking server side code)\

1. #include
2. #include
3. #include <sys/socket.h>
4. #include
5. #include <netinet/in.h>
6. #include
7. #include
8. #define PORT 8080
9. int main(int argc, char const *argv[])
10. {
11. int server_fd, new_socket, valread;
12. struct sockaddr_in address;
13. int opt = 1;
14. int addrlen = sizeof(address);
15. char buffer[1024] = {0};
16. char *hello = ”Hello from server”;
17. //Creating socket file descriptor
18. if((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == 0 )
19. {
20. perror(“socket failed”);
21. exit(EXIT_FAILURE);
22. }

23. if(setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR

    SO_REUSEPORT, & opt, sizeof(opt)))

24. {
25. perror(“setsockopt”);
26. exit(EXIT_FAILURE);
27. }
28. address.sin_family = AF_INET;
29. address.sin_addr.s_addr = INADDR_ANY;
30. address.sin_port = htons(PORT);
31. if(bind(server_fd, (struct sockaddr *)&address, sizeof(address))<0)
32. {
33. perror(“bind failed”);
34. exit(EXIT_FAILURE);
35. }
36. if(listen(server_fd, 3)< 0)
37. {
38. perror(“listen”);
39. exit(EXIT_FAILURE);
40. }
41. if((new_socket = accept(server_fd, (struct sockaddr *)&address, (socklen_t*)&addrlen))<0)
42. {
43. printf(“server accept failed….\n”);
44. exit(0);
45. }
46. int flag = fcntl(new_socket, F_GETFL, 0);

47. fcntl(new_socket, F_SETFL, flag

    O_NONBLOCK);

48. int read_size = 0;
49. while(1)
50. {
51. read_size = read(new_socket, buffer, 1024);
52. if(read_size > 0 )
53. {
54. printf(“%s\n”,buffer);
55. write(new_socket, hello, strlen(hello));
56. printf(“Hello message sent\n”);
57. }
58. }
59. return 0;
60. }

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client winform c# - link

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1. using System;
2. using System.Collections.Generic;
3. using System.ComponentModel;
4. using System.Data;
5. using System.Drawing;
6. using System.Linq;
7. using System.Text;
8. using System.Threading.Tasks;
9. using System.Windows.Forms;
10. using System.Net;
11. using System.Net.Sockets;
12. using SimpleTCP;
13. namespace tcp_ip_client_test
14. {
15. public partial class Form1 : Form
16. {
17. public Form1()
18. {
19. InitializeComponent();
20. }
21. SimpleTcpClient client;
22. private void button1_Click(object sender, EventArgs e)  //connect
23. {
24. connectBtn.Enabled = false;
25. //Connect to server
26. client.Connect(ttxtHost.Text, Convert.ToInt32(txtPort.Text));
27. }
28. private void Form1_Load(object sender, EventArgs e)
29. {
30. client = new SimpleTcpClient();
31. client.StringEncoder = Encoding.UTF8;
32. client.DataReceived += Client_DataReceived;
33. }
34. private void Client_DataReceived(object sender, SimpleTCP.Message e)
35. {
36. //Update message to txtStatus
37. txtStatus.Invoke((MethodInvoker)delegate ()
38. {
39. txtStatus.Text += e.MessageString;
40. });
41. }
42. private void button2_Click(object sender, EventArgs e)  //send
43. {
44. client.WriteLineAndGetReply(txtMessage.Text, TimeSpan.FromSeconds(3));
45. }
46. }
47. }

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socket_flow socket_flow_2

link1 link1-1 link1-2

link2

fixed ip setting guide