libcurl-http发送数据流程

2021-05-13 04:27

阅读:304

标签:fill   creat   run   version   custom   sts   bsp   sim   set   

源码目录

docs/example/httpcustomheader.c  添加自定义headers

 http-post.c  按字符串推送数据

simplepost.c 按长度推送数据

httpput.c  按文件推送

 

curl_easy_perform()

easy_transfer()

curl_multi_perform()

multi_runsingle()

 

CURLM_STATE_CONNECT

 

Curl_connect() (url.c)

create_conn()

  conn = allocate_conn(data);

  

  conn->recv[FIRSTSOCKET] = Curl_recv_plain;     //默认发送接收数据
  conn->send[FIRSTSOCKET] = Curl_send_plain;
  conn->recv[SECONDARYSOCKET] = Curl_recv_plain;
  conn->send[SECONDARYSOCKET] = Curl_send_plain;

 

  parseurlandfillconn()

  findprotocol()

    struct Curl_handler *p = Curl_builtin_scheme(protostr);

    conn->handler = conn->given = p;  

 

    Curl_builtin_scheme() (url.c)

      取出对应协议Curl_handler,包括连接,发送,接收处理等

      static const struct Curl_handler * const protocols[] = {

      #ifndef CURL_DISABLE_HTTP
      &Curl_handler_http,
      #endif

      #if defined(USE_SSL) && !defined(CURL_DISABLE_HTTP)
      &Curl_handler_https,
      #endif

 

 

CURLM_STATE_DO

multi_do()

  conn->handler->do_it(conn, done);

  Curl_http() (http.c)

 

  Curl_add_bufferf(&req_buffer,   //http 头数据发送
  "%s" /* ftp typecode (;type=x) */
  " HTTP/%s\r\n" /* HTTP version */

 

  Curl_add_custom_headers()   //添加自定义http头数据

 

  if(data->set.postfields) {  //按chunk,数据长度,文件推送数据

   Curl_add_buffer_send() //发送数据

     Curl_write()

      conn->send[] -> Curl_send_plain()

       *written = bytes_written; //保存已发送的数据

 

 

libcurl-http发送数据流程

标签:fill   creat   run   version   custom   sts   bsp   sim   set   

原文地址:https://www.cnblogs.com/gluck-sw-life/p/12002772.html


评论


亲,登录后才可以留言!