linux进程间通信send

ssize_t send(int sockfd, const void *buf, size_t len, int flags);

if (send(sockfd, buffer, strlen(buffer), 0) == -1) {
    perror("send");
    // 进一步的错误处理
}

int flags = fcntl(sockfd, F_GETFL, 0);
fcntl(sockfd, F_SETFL, flags | O_NONBLOCK);

#include <stdio.h>
#include <string.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <unistd.h>

int main() {
    int sockfd;
    struct sockaddr_in server_addr;
    char *message = "Hello, Server!";

    // 创建套接字
    if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
        perror("socket failed");
        exit(EXIT_FAILURE);
    }

    // 设置服务器地址
    server_addr.sin_family = AF_INET;
    server_addr.sin_port = htons(8080);
    inet_pton(AF_INET, "127.0.0.1", &server_addr.sin_addr);

    // 连接到服务器
    if (connect(sockfd, (struct sockaddr *)&server_addr, sizeof(server_addr)) < 0) {
        perror("connect failed");
        close(sockfd);
        exit(EXIT_FAILURE);
    }

    // 发送数据
    if (send(sockfd, message, strlen(message), 0) < 0) {
        perror("send failed");
    } else {
        printf("Message sent successfully\n");
    }

    close(sockfd);
    return 0;
}