当我运行以下程序时，我的程序启动了绑定功能，但失败，并显示错误“非套接字上的套接字操作”。我不确定发生了什么。我使用“ gcc a3server.c -g -o服务器”进行编译，没有编译错误。
#include <stdio.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
int main(int argc, char *argv[])
{
if (argc != 2)
{
printf("Error. Please enter the right amount of arguments (2)");
exit(1);
}
int sock, port, clientlen, connection, readfd, writefd;
char buffer[255];
struct sockaddr_in server, clientaddr;
if (sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP) < 0)
{
printf("Socket was not made.");
exit(1);
}
//bzero((char *) &server, sizeof(server));
port = atoi(argv[1]);
server.sin_family = AF_INET;
server.sin_addr.s_addr = INADDR_ANY;
server.sin_port = htons(port);
int bindfd = bind(sock, (struct sockaddr *) &server, sizeof(server));
if (bindfd < 0)
{
perror("Could not bind socket to address: ");
exit(1);
}
listen(sock, 5);
clientlen = sizeof(clientaddr);
if (connection = accept(sock, (struct sockaddr *) &clientaddr, &clientlen) < 0)
{
printf("Could not accept connection");
exit(1);
}
if (readfd = read(connection, buffer, 255) < 0)
{
printf("Could not read from socket");
exit(1);
}
printf("!---THIS IS A TEST---! \n BUFFER: %s", buffer);
if (writefd = write(connection, buffer, 255) < 0)
{
printf("Could not write to socket");
exit(1);
}
return 0;
}
线
if (sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP) < 0)
应该
if ( (sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0)
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我来说两句