(int);
void bad_request(int);
void cat(int, FILE *);
void cannot_execute(int);
void error_die(const char...*);
void execute_cgi(int, const char *, const char *, const char *);
int get_line(int, char *, int);..., "REQUEST_METHOD=%s", method);
//设置环境变量
putenv(meth_env);
if (strcasecmp(method, "GET") == 0)..., strlen(buf), 0);
sprintf(buf, "\r\n");
send(client, buf, strlen(buf), 0);
sprintf(buf, "Method Not Implemented\r\n");
send(client, buf, strlen(buf), 0);
sprintf(buf, "</HEAD