linux socket缓存大小

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

int main() {
    int sockfd;
    struct sockaddr_in servaddr;
    int sendbuff_size = 65536; // 设置发送缓冲区大小为64KB
    int recvbuff_size = 65536; // 设置接收缓冲区大小为64KB

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

    // 设置发送缓冲区大小
    if (setsockopt(sockfd, SOL_SOCKET, SO_SNDBUF, &sendbuff_size, sizeof(sendbuff_size)) < 0) {
        perror("setsockopt SO_SNDBUF failed");
        close(sockfd);
        exit(EXIT_FAILURE);
    }

    // 设置接收缓冲区大小
    if (setsockopt(sockfd, SOL_SOCKET, SO_RCVBUF, &recvbuff_size, sizeof(recvbuff_size)) < 0) {
        perror("setsockopt SO_RCVBUF failed");
        close(sockfd);
        exit(EXIT_FAILURE);
    }

    // 绑定和监听等操作...

    close(sockfd);
    return 0;
}