linux socket 参数

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

int main() {
    int sockfd;
    int flag = 1;
    struct sockaddr_in serv_addr;

    if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
        perror("socket");
        exit(EXIT_FAILURE);
    }

    memset(&serv_addr, 0, sizeof(serv_addr));
    serv_addr.sin_family = AF_INET;
    serv_addr.sin_port = htons(8080);

    if (inet_pton(AF_INET, "127.0.0.1", &serv_addr.sin_addr) <= 0) {
        perror("inet_pton");
        exit(EXIT_FAILURE);
    }

    // 设置TCP_NODELAY选项
    if (setsockopt(sockfd, IPPROTO_TCP, TCP_NODELAY, (char *)&flag, sizeof(flag)) < 0) {
        perror("setsockopt");
        exit(EXIT_FAILURE);
    }

    if (connect(sockfd, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) < 0) {
        perror("connect");
        exit(EXIT_FAILURE);
    }

    // ... 进行数据通信 ...

    close(sockfd);
    return 0;
}