int
pmhttpClientFetch(http_client *cp, const char *url,
char *body_buffer, size_t body_length,
char *type_buffer, size_t type_length)
{
int sts = 0, redirected = 0;
if (pmDebug & DBG_TRACE_HTTP)
fprintf(stderr, "pmhttpClientFetch: %s\n", url);
if (http_client_prepare(cp, url, body_buffer, body_length,
type_buffer, type_length) != 0)
return -1;
while (redirected <= cp->max_redirect) {
/* ensure we're connected to the server */
if ((sts = http_client_connect(cp)) < 0)
return sts;
/* make a GET request via the given URL */
if ((sts = http_client_get(cp)) < 0)
return sts;
if (sts == 1) /* server connection is lost */
continue;
/* parse, extract body, handle redirect */
if ((sts = http_client_response(cp)) < 0) {
if (sts == -EAGAIN) /* server closed */
continue;
if (sts == -EMLINK) { /* http redirect */
redirected++;
continue;
}
break; /* propogate errors */
}
break; /* successful exchange */
}
if (pmDebug & DBG_TRACE_HTTP)
fprintf(stderr, "pmhttpClientFetch sts=%d\n", sts);
return sts;
}
/*
* response_write: 回写http响应。
* 参数:
* client: client实例的指针,
* sockfd: socket 文件描述符。
* 返回:
* -1: 表示出错，
* 1(HTTP_SOCKFD_IN): 表示I/O层监听sockfd读事件。
* 2(HTTP_SOCKFD_OUT): 表示I/O层监听sockfd写事件。
* 4(HTTP_SOCKFD_DEL): 表示I/O层删除sockfd事件监听。
*/
int response_write(struct http_client *client, int sockfd)
{
struct pool_entry *entry;
int ret = -1;
unsigned int epflag = 0;
if ( NULL == client || sockfd < 0 )
return ret;
if ( !client->inprocess ) {
/* 不应该会执行到此处 */
fprintf(stderr, "WRITE: client->inprocess equal 0 and sockfd equal %d\n",
sockfd);
return ret;
}
ret = http_client_response(client, &epflag);
if (ret < 0)
return ret;
if ( HTTP_SOCKFD_OUT == epflag ) {
return HTTP_SOCKFD_OUT;
} else if ( HTTP_SOCKFD_IN == epflag ) {
return HTTP_SOCKFD_IN;
} else if ( HTTP_SOCKFD_DEL == epflag ) {
return HTTP_SOCKFD_DEL;
} else {
/* 出错了 */
return -1;
}
/* TODO */
ret = http_client_keepalive(client);
if ( ret && ret != -1 ) {
/* 准备下一次连接请求 */
http_client_reset(client);
return HTTP_SOCKFD_IN;
} else {
return HTTP_SOCKFD_DEL;
}
}