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A transfer may do several `SingleRequest`s for its success. This happens regularly for authentication, follows and retries on failed connections. The "readwrite()" calls and functions connected to those carried a `bool *done` parameter to indicate that the current `SingleRequest` is over. This may happen before `upload_done` or `download_done` bits of `SingleRequest` are set. The problem with that is now `write_resp()` protocol handlers are invoked in places where the `bool *done` cannot be passed up to the caller. Instead of being a bool in the call chain, it needs to become a member of `SingleRequest`, reflecting its state. This removes the `bool *done` parameter and adds the `done` bit to `SingleRequest` instead. It adds `Curl_req_soft_reset()` for using a `SingleRequest` in a follow up, clearing `done` and other flags/counters. Closes #13096
108 lines
4.4 KiB
C
108 lines
4.4 KiB
C
#ifndef HEADER_CURL_TRANSFER_H
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#define HEADER_CURL_TRANSFER_H
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/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at https://curl.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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* SPDX-License-Identifier: curl
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*
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***************************************************************************/
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#define Curl_headersep(x) ((((x)==':') || ((x)==';')))
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char *Curl_checkheaders(const struct Curl_easy *data,
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const char *thisheader,
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const size_t thislen);
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void Curl_init_CONNECT(struct Curl_easy *data);
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CURLcode Curl_pretransfer(struct Curl_easy *data);
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CURLcode Curl_posttransfer(struct Curl_easy *data);
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typedef enum {
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FOLLOW_NONE, /* not used within the function, just a placeholder to
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allow initing to this */
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FOLLOW_FAKE, /* only records stuff, not actually following */
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FOLLOW_RETRY, /* set if this is a request retry as opposed to a real
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redirect following */
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FOLLOW_REDIR /* a full true redirect */
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} followtype;
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CURLcode Curl_follow(struct Curl_easy *data, char *newurl,
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followtype type);
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CURLcode Curl_readwrite(struct Curl_easy *data);
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int Curl_single_getsock(struct Curl_easy *data,
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struct connectdata *conn, curl_socket_t *socks);
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CURLcode Curl_retry_request(struct Curl_easy *data, char **url);
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bool Curl_meets_timecondition(struct Curl_easy *data, time_t timeofdoc);
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/**
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* Write the transfer raw response bytes, as received from the connection.
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* Will handle all passed bytes or return an error. By default, this will
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* write the bytes as BODY to the client. Protocols may provide a
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* "write_resp" callback in their handler to add specific treatment. E.g.
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* HTTP parses response headers and passes them differently to the client.
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* @param data the transfer
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* @param buf the raw response bytes
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* @param blen the amount of bytes in `buf`
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* @param is_eos TRUE iff the connection indicates this to be the last
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* bytes of the response
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* @param done on returnm, TRUE iff the response is complete
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*/
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CURLcode Curl_xfer_write_resp(struct Curl_easy *data,
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char *buf, size_t blen,
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bool is_eos);
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/* This sets up a forthcoming transfer */
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void Curl_xfer_setup(struct Curl_easy *data,
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int sockindex, /* socket index to read from or -1 */
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curl_off_t size, /* -1 if unknown at this point */
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bool getheader, /* TRUE if header parsing is wanted */
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int writesockindex /* socket index to write to. May be
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the same we read from. -1
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disables */
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);
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/**
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* Multi has set transfer to DONE. Last chance to trigger
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* missing response things like writing an EOS to the client.
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*/
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CURLcode Curl_xfer_write_done(struct Curl_easy *data, bool premature);
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/**
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* Send data on the socket/connection filter designated
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* for transfer's outgoing data.
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* Will return CURLE_OK on blocking with (*pnwritten == 0).
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*/
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CURLcode Curl_xfer_send(struct Curl_easy *data,
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const void *buf, size_t blen,
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size_t *pnwritten);
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/**
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* Receive data on the socket/connection filter designated
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* for transfer's incoming data.
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* Will return CURLE_AGAIN on blocking with (*pnrcvd == 0).
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*/
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CURLcode Curl_xfer_recv(struct Curl_easy *data,
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char *buf, size_t blen,
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ssize_t *pnrcvd);
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CURLcode Curl_xfer_send_close(struct Curl_easy *data);
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#endif /* HEADER_CURL_TRANSFER_H */
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