VxWorks中TCP/IP协议的实现

该示例代码展示了如何在VxWorks操作系统中实现TCP/IP协议，包括初始化网络接口、创建socket等。其中，使用了VxWorks提供的网络栈和socket库。此外，该示例还演示了如何通过socket接收和发送数据。

#include <vxWorks.h>
#include <socket.h>
#include <inetLib.h>

STATUS netInit()
{
    STATUS status;

    /* 初始化网络接口 */
    status = netDevInit();
    if (status != OK) {
        printf("Failed to initialize network device.\n");
        return ERROR;
    }

    /* 初始化socket库 */
    status = sockLibInit();
    if (status != OK) {
        printf("Failed to initialize socket library.\n");
        return ERROR;
    }

    /* 绑定socket */
    int sock = socket(AF_INET, SOCK_STREAM, 0);
    if (sock == ERROR) {
        printf("Failed to create socket.\n");
        return ERROR;
    }

    /* 监听端口 */
    struct sockaddr_in serverAddr;
    memset(&serverAddr, 0, sizeof(serverAddr));
    serverAddr.sin_family = AF_INET;
    serverAddr.sin_port = htons(1234);
    serverAddr.sin_addr.s_addr = htonl(INADDR_ANY);
    if (bind(sock, (struct sockaddr *)&serverAddr, sizeof(serverAddr)) == ERROR) {
        printf("Failed to bind socket.\n");
        return ERROR;
    }

    /* 启动监听 */
    if (listen(sock, 10) == ERROR) {
        printf("Failed to listen on socket.\n");
        return ERROR;
    }

    /* 接收连接请求 */
    int connectedSock = accept(sock, NULL, NULL);
    if (connectedSock == ERROR) {
        printf("Failed to accept connection.\n");
        return ERROR;
    }

    /* 接收数据 */
    char buffer[1024];
    int bytesRead = recv(connectedSock, buffer, sizeof(buffer), 0);
    if (bytesRead == ERROR) {
        printf("Error reading from socket.\n");
        return ERROR;
    }

    printf("Received %d bytes of data: %s\n", bytesRead, buffer);

    /* 发送数据 */
    const char *message = "Hello, World!";
    int bytesSent = send(connectedSock, message, strlen(message), 0);
    if (bytesSent == ERROR) {
        printf("Error sending data.\n");
        return ERROR;
    }

    printf("%d bytes of data sent.\n", bytesSent);

    /* 关闭socket */
    close(connectedSock);
    close(sock);

    return OK;
}

int main()
{
    if (netInit() != OK) {
        printf("Failed to initialize network.\n");
        return -1;
    }

    return 0;
}

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