-
Notifications
You must be signed in to change notification settings - Fork 4
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
mohamed
committed
Feb 6, 2023
1 parent
71d8574
commit d15e460
Showing
24 changed files
with
453 additions
and
97 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| #include <stdio.h> | ||
| #include <stdint.h> | ||
| #include <string.h> | ||
| #include <sys/socket.h> | ||
| #include <arpa/inet.h> | ||
| #include <unistd.h> | ||
|
|
||
| uint8_t connect_packet[]= { | ||
| 0x10, // Packet type = CONNECT | ||
| 0x10, // Remaining length = 16 | ||
| 0x00, 0x04, // Protocol name length | ||
| 0x4d, 0x51, 0x54, 0x54, // Protocol name = MQTT | ||
| 0x04, // Protocol Version | ||
| 0x02, // Connect flags | ||
| 0x00, 0x3c, // Keep alive time in secondes = 60 s | ||
| 0x00, 0x04, // Client ID length | ||
| 0x46, 0x46, 0x46, 0x46 // Client ID | ||
| }; | ||
|
|
||
|
|
||
| uint8_t disconnect_packet[] = { | ||
| 0xe0, // Packet type = DISCONNECT | ||
| 0x00 // Remaining length = 0 | ||
| }; | ||
|
|
||
| uint8_t publish_packet[] ={ | ||
| 0x30, // Packet type = Publish + DUP+QOS+retain=0 | ||
| 0x0b, // Remaining length = 11 | ||
| 0x00, 0x04, // Topic name length | ||
| 0x46, 0x46, 0x46, 0x46 // Topic name = Client ID | ||
| }; | ||
| uint8_t payload[]={0x68, 0x65, 0x6c, 0x6c, 0x6f}; // Payload | ||
|
|
||
|
|
||
| void print_array(uint8_t * a,uint8_t n){ | ||
| uint8_t i=0; | ||
| for(i=0;i<n;i++) | ||
| printf("%02x ",a[i]); | ||
| printf("\n"); | ||
| } | ||
|
|
||
|
|
||
|
|
||
| int main(){ | ||
| short server_socket = socket(AF_INET,SOCK_STREAM,0); | ||
| struct sockaddr_in remote = {0}; | ||
| remote.sin_addr.s_addr = inet_addr("127.0.0.1"); | ||
| remote.sin_family = AF_INET; | ||
| remote.sin_port = htons(1883); | ||
|
|
||
| print_array(connect_packet,18); | ||
|
|
||
| connect(server_socket,(struct sockaddr *)&remote,sizeof(struct sockaddr_in)); | ||
| send(server_socket,connect_packet,18,0); | ||
| sleep(1); | ||
| send(server_socket,publish_packet,13,0); | ||
| send(server_socket,payload,5,0); | ||
| sleep(1); | ||
| send(server_socket,disconnect_packet,2,0); | ||
| close(server_socket); | ||
|
|
||
|
|
||
| return 0; | ||
| } | ||
|
|
||
|
|
||
|
|
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.