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conf: stalled-download-timeout: make tunable

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Make curl's low speed limit configurable via stalled-download-timeout.
Before, this limit was five minutes without receiving a single byte.
This is much too long as if the remote end may not have even
acknowledged the HTTP request.
This commit is contained in:
Graham Christensen 2019-08-07 15:14:40 -04:00
parent 1eeaf99cf8
commit a02457db71
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GPG key ID: ACA1C1D120C83D5C
3 changed files with 12 additions and 3 deletions
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8
doc/manual/command-ref/conf-file.xml
View file

@ -873,6 +873,14 @@ password <replaceable>my-password</replaceable>
</varlistentry> </varlistentry>
<varlistentry xml:id="conf-stalled-download-timeout"><term><literal>stalled-download-timeout</literal></term>
<listitem>
<para>The timeout (in seconds) for receiving data from servers
during download. Nix cancels idle downloads after this timeout's
duration.</para>
</listitem>
</varlistentry>
<varlistentry xml:id="conf-substituters"><term><literal>substituters</literal></term> <varlistentry xml:id="conf-substituters"><term><literal>substituters</literal></term>
<listitem><para>A list of URLs of substituters, separated by <listitem><para>A list of URLs of substituters, separated by

4
src/libstore/download.cc
View file

@ -236,8 +236,6 @@ struct CurlDownloader : public Downloader
return ((DownloadItem *) userp)->readCallback(buffer, size, nitems); return ((DownloadItem *) userp)->readCallback(buffer, size, nitems);
} }
long lowSpeedTimeout = 300;
void init() void init()
{ {
if (!req) req = curl_easy_init(); if (!req) req = curl_easy_init();
@ -297,7 +295,7 @@ struct CurlDownloader : public Downloader
curl_easy_setopt(req, CURLOPT_CONNECTTIMEOUT, downloadSettings.connectTimeout.get()); curl_easy_setopt(req, CURLOPT_CONNECTTIMEOUT, downloadSettings.connectTimeout.get());
curl_easy_setopt(req, CURLOPT_LOW_SPEED_LIMIT, 1L); curl_easy_setopt(req, CURLOPT_LOW_SPEED_LIMIT, 1L);
curl_easy_setopt(req, CURLOPT_LOW_SPEED_TIME, lowSpeedTimeout); curl_easy_setopt(req, CURLOPT_LOW_SPEED_TIME, downloadSettings.stalledDownloadTimeout.get());
/* If no file exist in the specified path, curl continues to work /* If no file exist in the specified path, curl continues to work
anyway as if netrc support was disabled. */ anyway as if netrc support was disabled. */

3
src/libstore/download.hh
View file

@ -24,6 +24,9 @@ struct DownloadSettings : Config
Setting<unsigned long> connectTimeout{this, 0, "connect-timeout", Setting<unsigned long> connectTimeout{this, 0, "connect-timeout",
"Timeout for connecting to servers during downloads. 0 means use curl's builtin default."}; "Timeout for connecting to servers during downloads. 0 means use curl's builtin default."};
Setting<unsigned long> stalledDownloadTimeout{this, 300, "stalled-download-timeout",
"Timeout (in seconds) for receiving data from servers during download. Nix cancels idle downloads after this timeout's duration."};
Setting<unsigned int> tries{this, 5, "download-attempts", Setting<unsigned int> tries{this, 5, "download-attempts",
"How often Nix will attempt to download a file before giving up."}; "How often Nix will attempt to download a file before giving up."};
}; };