pod update執(zhí)行后卻報了下面的錯誤：
Updating spec repo `master`[!] Failed to connect to GitHub to update the CocoaPods/Specs specs repo - Please checkifyou are offline,orthat GitHubisdown
這是為何呢吁峻，明明不久前剛剛更新Cocoapods為1.3.1版本啊。
搜索才發(fā)現(xiàn)是Github在不久之前的2018年2月23號移除了一些低加密標準協(xié)議，包括TLSv1/TLSv1.1比搭，diffie-hellman-group1-sha1，diffie-hellman-group14-sha1，相關鏈接在這里：Weak cryptographic standards removed
這就意味著Mac系統(tǒng)對應的openssl也需要更新火窒。
這里提供了全套升級辦法，搬運過來：
$ which openssl
/usr/bin/openssl
$ openssl version
OpenSSL 0.9.8zh 14 Jan 2016
$ /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
$ brew update
$ brew install openssl
$ brew upgrade openssl
`` If you need to have this software first in your PATH run: echo 'export PATH="/usr/local/opt/openssl/bin:$PATH"' >> ~/.bash_profile
$ echo 'export PATH="/usr/local/opt/openssl/bin:$PATH"' >> ~/.bash_profile
$ source ~/.bash_profile
$ which openssl
/usr/local/opt/openssl/bin/openssl
$ openssl version
OpenSSL 1.0.2n? 7 Dec 2017
$ brew install rbenv ruby-build
$ echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bash_profile
$ echo 'if which rbenv > /dev/null; then eval "$(rbenv init -)"; fi' >> ~/.bash_profile
$ source ~/.bash_profile
$ rbenv install --list
Available versions:
? 1.8.5-p52
? 1.8.5-p113
? 1.8.5-p114
? 1.8.5-p115
? 1.8.5-p231
? 1.8.6
:
? 2.5.0-rc1
? 2.5.0
? 2.6.0-dev
:
$ rbenv install 2.5.0
$ rbenv versions
* system (set by /Users/username/.rbenv/version)
? 2.5.0
$ ruby --version
ruby 2.0.0p648 (2015-12-16 revision 53162) [universal.x86_64-darwin16]
$ rbenv global 2.5.0
$ rbenv versions
? system
* 2.5.0 (set by /Users/username/.rbenv/version)
$ ruby --version
ruby 2.5.0p0 (2017-12-25 revision 61468) [x86_64-darwin16]
$ gem install cocoapods -n /usr/local/bin
$ which pod
/usr/local/bin/pod
$ pod --version
1.4.0
完成上面一系列操作后驮肉，Cocoapods將會升級到最新的1.4.0版本熏矿。再執(zhí)行pod repo update master --verbose就沒有問題了。
轉載地址：https://blog.csdn.net/h386926074/article/details/79488545
