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spec/util_http_spec.lua @ 11665:148075532021
net.server_epoll: Prevent stack overflow of opportunistic writes
net.http.files serving a big enough file on a fast enough connection
with opportunistic_writes enabled could trigger a stack overflow through
repeatedly serving more data that immediately gets sent, draining the
buffer and triggering more data to be sent. This also blocked the server
on a single task until completion or an error.
This change prevents nested opportunistic writes, which should prevent
the stack overflow, at the cost of reduced download speed, but this is
unlikely to be noticeable outside of Gbit networks. Speed at the cost of
blocking other processing is not worth it, especially with the risk of
stack overflow.
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Sun, 11 Jul 2021 09:39:21 +0200 |
parent | 10711:d2e4584ba7b3 |
child | 13124:f15e23840780 |
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local http = require "util.http"; describe("util.http", function() describe("#urlencode()", function() it("should not change normal characters", function() assert.are.equal(http.urlencode("helloworld123"), "helloworld123"); end); it("should escape spaces", function() assert.are.equal(http.urlencode("hello world"), "hello%20world"); end); it("should escape important URL characters", function() assert.are.equal(http.urlencode("This & that = something"), "This%20%26%20that%20%3d%20something"); end); end); describe("#urldecode()", function() it("should not change normal characters", function() assert.are.equal("helloworld123", http.urldecode("helloworld123"), "Normal characters not escaped"); end); it("should decode spaces", function() assert.are.equal("hello world", http.urldecode("hello%20world"), "Spaces escaped"); end); it("should decode important URL characters", function() assert.are.equal("This & that = something", http.urldecode("This%20%26%20that%20%3d%20something"), "Important URL chars escaped"); end); it("should decode both lower and uppercase", function () assert.are.equal("This & that = {something}.", http.urldecode("This%20%26%20that%20%3D%20%7Bsomething%7D%2E"), "Important URL chars escaped"); end); end); describe("#formencode()", function() it("should encode basic data", function() assert.are.equal(http.formencode({ { name = "one", value = "1"}, { name = "two", value = "2" } }), "one=1&two=2", "Form encoded"); end); it("should encode special characters with escaping", function() assert.are.equal(http.formencode({ { name = "one two", value = "1"}, { name = "two one&", value = "2" } }), "one+two=1&two+one%26=2", "Form encoded"); end); end); describe("#formdecode()", function() it("should decode basic data", function() local t = http.formdecode("one=1&two=2"); assert.are.same(t, { { name = "one", value = "1" }; { name = "two", value = "2" }; one = "1"; two = "2"; }); end); it("should decode special characters", function() local t = http.formdecode("one+two=1&two+one%26=2"); assert.are.same(t, { { name = "one two", value = "1" }; { name = "two one&", value = "2" }; ["one two"] = "1"; ["two one&"] = "2"; }); end); end); describe("normalize_path", function () it("root path is always '/'", function () assert.equal("/", http.normalize_path("/")); assert.equal("/", http.normalize_path("")); assert.equal("/", http.normalize_path("/", true)); assert.equal("/", http.normalize_path("", true)); end); it("works", function () assert.equal("/foo", http.normalize_path("foo")); assert.equal("/foo", http.normalize_path("/foo")); assert.equal("/foo", http.normalize_path("foo/")); assert.equal("/foo", http.normalize_path("/foo/")); end); it("is_dir works", function () assert.equal("/foo/", http.normalize_path("foo", true)); assert.equal("/foo/", http.normalize_path("/foo", true)); assert.equal("/foo/", http.normalize_path("foo/", true)); assert.equal("/foo/", http.normalize_path("/foo/", true)); end); end); describe("contains_token", function () it("is present in field", function () assert.is_true(http.contains_token("foo", "foo")); assert.is_true(http.contains_token("foo, bar", "foo")); assert.is_true(http.contains_token("foo,bar", "foo")); assert.is_true(http.contains_token("bar, foo,baz", "foo")); end); it("is absent from field", function () assert.is_false(http.contains_token("bar", "foo")); assert.is_false(http.contains_token("fooo", "foo")); assert.is_false(http.contains_token("foo o,bar", "foo")); end); it("is weird", function () assert.is_(http.contains_token("fo o", "foo")); end); end); end);