someip代码
时间: 2023-07-02 22:11:07 浏览: 49
以下是一个简单的 SomeIP 示例代码,用于发送和接收一条消息:
```c++
#include <iostream>
#include <string.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#include <netinet/in.h>
#define SERVER_IP "127.0.0.1"
#define SERVER_PORT 8080
#define SOMEIP_HEADER_LENGTH 12
using namespace std;
// SomeIP header结构体
struct SomeIPHeader {
uint16_t message_id;
uint8_t length;
uint8_t protocol_version;
uint8_t interface_version;
uint8_t message_type;
uint8_t return_code;
uint8_t flags;
uint32_t reserved;
};
int main() {
int sock = socket(AF_INET, SOCK_DGRAM, 0);
if (sock < 0) {
cerr << "Failed to create socket." << endl;
return -1;
}
// 构造服务器地址
struct sockaddr_in server_addr;
memset(&server_addr, 0, sizeof(server_addr));
server_addr.sin_family = AF_INET;
server_addr.sin_addr.s_addr = inet_addr(SERVER_IP);
server_addr.sin_port = htons(SERVER_PORT);
// 构造SomeIP消息
SomeIPHeader header;
memset(&header, 0, sizeof(header));
header.message_id = htons(0x1234);
header.length = 4;
header.protocol_version = 1;
header.interface_version = 1;
header.message_type = 1;
header.return_code = 0;
header.flags = 0;
header.reserved = 0;
char message[SOMEIP_HEADER_LENGTH + header.length];
memcpy(message, &header, SOMEIP_HEADER_LENGTH);
memcpy(message + SOMEIP_HEADER_LENGTH, "test", header.length);
// 发送SomeIP消息
ssize_t send_len = sendto(sock, message, SOMEIP_HEADER_LENGTH + header.length, 0,
(struct sockaddr *)&server_addr, sizeof(server_addr));
if (send_len < 0) {
cerr << "Failed to send SomeIP message." << endl;
close(sock);
return -1;
}
cout << "SomeIP message sent." << endl;
// 接收SomeIP消息
char recv_buf[1024];
struct sockaddr_in client_addr;
socklen_t client_addr_len = sizeof(client_addr);
ssize_t recv_len = recvfrom(sock, recv_buf, sizeof(recv_buf), 0,
(struct sockaddr *)&client_addr, &client_addr_len);
if (recv_len < 0) {
cerr << "Failed to receive SomeIP message." << endl;
close(sock);
return -1;
}
// 解析SomeIP消息
SomeIPHeader *recv_header = (SomeIPHeader *)recv_buf;
uint16_t message_id = ntohs(recv_header->message_id);
uint8_t length = recv_header->length;
char payload[length];
memcpy(payload, recv_buf + SOMEIP_HEADER_LENGTH, length);
cout << "SomeIP message received. ID: " << message_id
<< ", Payload: " << string(payload, length) << endl;
close(sock);
return 0;
}
```
注意事项:
- SomeIP 头部长度为12字节。
- 在发送消息之前,需要构造 SomeIP 消息头部和消息负载。
- 发送和接收消息时,需要指定服务器地址和端口号。
- 接收到的消息需要按照 SomeIP 消息头部指定的长度进行解析。