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TFTP: add option to suppress TFTP option requests (Part 1)

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Some TFTP server implementations ignore the "TFTP Option extension"
(RFC 1782-1784, 2347-2349), or implement it in a flawed way, causing
problems with libcurl. Another switch for curl_easy_setopt
"CURLOPT_TFTP_NO_OPTIONS" is introduced which prevents libcurl from
sending TFTP option requests to a server, avoiding many problems caused
by faulty implementations.

Bug: https://github.com/curl/curl/issues/481
This commit is contained in:
Michael Koenig 2015-08-17 17:54:47 +02:00 • committed by Jay Satiro
parent 527e86b054
commit 9dc3eaee29
8 changed files with 90 additions and 27 deletions
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3
include/curl/curl.h
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@ -1673,6 +1673,9 @@ typedef enum {
/* Set E-xclusive stream dependency on another CURL handle */
CINIT(STREAM_DEPENDS_E, OBJECTPOINT, 241),
/* Do not send any tftp option requests to the server */
CINIT(TFTP_NO_OPTIONS, LONG, 242),
CURLOPT_LASTENTRY /* the last unused */
} CURLoption;