C++ 代码怎么使用使用SOME/IP协议进行通信
时间: 2024-01-30 20:04:09 浏览: 76
SOME/IP(Scalable service-Oriented MiddlewarE over IP)协议是一种高效的通信协议,适用于多种应用场景。下面是一个使用C++实现SOME/IP通信的示例代码:
```cpp
#include <iostream>
#include <cstdlib>
#include <cstring>
#include <unistd.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netinet/in.h>
// 定义SOME/IP协议头部结构体
struct SomeipHeader {
uint8_t protocol_version;
uint8_t interface_version;
uint8_t message_type;
uint8_t return_code;
uint32_t message_id;
uint32_t client_id;
uint32_t session_id;
};
// 定义SOME/IP协议消息结构体
struct SomeipMessage {
SomeipHeader header;
uint8_t payload[1024];
};
int main() {
int sockfd;
struct sockaddr_in servaddr, cliaddr;
// 创建socket
sockfd = socket(AF_INET, SOCK_DGRAM, 0);
if (sockfd == -1) {
perror("socket");
exit(EXIT_FAILURE);
}
// 设置服务器地址
memset(&servaddr, 0, sizeof(servaddr));
servaddr.sin_family = AF_INET;
servaddr.sin_port = htons(54321);
servaddr.sin_addr.s_addr = inet_addr("127.0.0.1");
// 绑定客户端地址
memset(&cliaddr, 0, sizeof(cliaddr));
cliaddr.sin_family = AF_INET;
cliaddr.sin_port = htons(0);
cliaddr.sin_addr.s_addr = htonl(INADDR_ANY);
if (bind(sockfd, (struct sockaddr *)&cliaddr, sizeof(cliaddr)) == -1) {
perror("bind");
exit(EXIT_FAILURE);
}
// 创建SOME/IP协议消息
SomeipMessage message;
memset(&message, 0, sizeof(message));
message.header.protocol_version = 1;
message.header.interface_version = 1;
message.header.message_type = 0x02; // 请求消息
message.header.return_code = 0x00;
message.header.message_id = 0x12345678;
message.header.client_id = 0x11223344;
message.header.session_id = 0x55667788;
message.payload[0] = 0x01;
message.payload[1] = 0x02;
message.payload[2] = 0x03;
message.payload[3] = 0x04;
// 发送SOME/IP协议消息
if (sendto(sockfd, &message, sizeof(message), 0, (const struct sockaddr *)&servaddr, sizeof(servaddr)) == -1) {
perror("sendto");
exit(EXIT_FAILURE);
}
// 接收SOME/IP协议消息
SomeipMessage response;
memset(&response, 0, sizeof(response));
socklen_t len = sizeof(cliaddr);
if (recvfrom(sockfd, &response, sizeof(response), 0, (struct sockaddr *)&cliaddr, &len) == -1) {
perror("recvfrom");
exit(EXIT_FAILURE);
}
// 处理SOME/IP协议响应消息
std::cout << "Response message payload: ";
for (int i = 0; i < sizeof(response.payload); i++) {
std::cout << std::hex << (int)response.payload[i];
}
std::cout << std::endl;
// 关闭socket
close(sockfd);
return 0;
}
```
这段代码实现了一个SOME/IP协议的客户端,它向服务器发送一个请求消息,并接收服务器的响应消息。在代码中,我们首先定义了SOME/IP协议头部和消息结构体。接着创建了一个UDP socket,并设置了服务器地址和客户端地址。然后创建了一个SOME/IP协议消息,并发送给服务器。最后接收服务器的响应消息,并处理消息的payload部分。
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