SPDK hello_sock.c提示hello_sock_listen: *ERROR*: Cannot create server socket

如果在运行 SPDK hello_sock_connect 示例应用程序时，提示 "hello_sock_listen: *ERROR*: Cannot create server socket" 错误，通常是由于以下原因之一导致的：

1. 端口号被占用：在启动 hello_sock_connect 应用程序时，可能指定的端口号已经被其他进程占用了。您可以尝试使用其他端口号或检查当前系统中哪些进程占用了指定的端口号。

2. 没有足够的权限：在某些情况下，启动 hello_sock_connect 应用程序需要管理员权限或特定的权限。您可以尝试使用 sudo 命令以管理员身份运行应用程序，或检查当前用户是否具有足够的权限来创建服务器 socket。

3. 防火墙或网络设置问题：在某些情况下，防火墙或网络设置可能会阻止应用程序创建服务器 socket。您可以检查防火墙或网络设置，并确保它们允许应用程序创建服务器 socket。

如果您无法解决这个问题，可以尝试使用其他端口号或尝试在其他计算机上运行应用程序，以确定问题是否与特定的计算机或端口号有关。

相关问题

C++ socket code

Sorry, as an AI language model, I cannot provide you with a complete code without knowing the specific requirements of your project. However, I can give you a basic example of a client-server communication code using sockets in C.

Server Side:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>

int main(){
    int server_socket, client_socket, port_number;
    socklen_t client_length;
    char buffer[256];

    struct sockaddr_in server_address, client_address;

    // create socket
    server_socket = socket(AF_INET, SOCK_STREAM, 0);
    if (server_socket < 0) {
        perror("Error opening socket");
        exit(1);
    }

    // initialize server address
    bzero((char*) &server_address, sizeof(server_address));
    port_number = 8080;
    server_address.sin_family = AF_INET;
    server_address.sin_addr.s_addr = INADDR_ANY;
    server_address.sin_port = htons(port_number);

    // bind socket to address
    if (bind(server_socket, (struct sockaddr*) &server_address, sizeof(server_address)) < 0) {
        perror("Error binding socket");
        exit(1);
    }

    // listen for incoming connections
    listen(server_socket, 5);

    // accept client connection
    client_length = sizeof(client_address);
    client_socket = accept(server_socket, (struct sockaddr*) &client_address, &client_length);
    if (client_socket < 0) {
        perror("Error accepting connection");
        exit(1);
    }

    // read message from client
    bzero(buffer, 256);
    read(client_socket, buffer, 255);
    printf("Received message from client: %s\n", buffer);

    // send response to client
    char response[] = "Hello from server!";
    write(client_socket, response, strlen(response));

    // close sockets
    close(client_socket);
    close(server_socket);

    return 0;
}

Client Side:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>

int main(){
    int client_socket, port_number, n;
    struct sockaddr_in server_address;
    struct hostent* server;

    char buffer[256];

    // create socket
    client_socket = socket(AF_INET, SOCK_STREAM, 0);
    if (client_socket < 0) {
        perror("Error opening socket");
        exit(1);
    }

    // get server by hostname
    server = gethostbyname("localhost");
    if (server == NULL) {
        perror("Error finding server");
        exit(1);
    }

    // initialize server address
    bzero((char*) &server_address, sizeof(server_address));
    port_number = 8080;
    server_address.sin_family = AF_INET;
    bcopy((char*) server->h_addr, (char*) &server_address.sin_addr.s_addr, server->h_length);
    server_address.sin_port = htons(port_number);

    // connect to server
    if (connect(client_socket, (struct sockaddr*) &server_address, sizeof(server_address)) < 0) {
        perror("Error connecting to server");
        exit(1);
    }

    // send message to server
    char message[] = "Hello from client!";
    write(client_socket, message, strlen(message));

    // read response from server
    bzero(buffer, 256);
    read(client_socket, buffer, 255);
    printf("Received message from server: %s\n", buffer);

    // close socket
    close(client_socket);

    return 0;
}