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describe("http.websocket module's internal functions work", function()
local websocket = require "http.websocket"
it("build_frame works for simple cases", function()
-- Examples from RFC 6455 Section 5.7
-- A single-frame unmasked text message
assert.same(string.char(0x81,0x05,0x48,0x65,0x6c,0x6c,0x6f), websocket.build_frame {
FIN = true;
MASK = false;
opcode = 0x1;
data = "Hello";
})
-- A single-frame masked text message
assert.same(string.char(0x81,0x85,0x37,0xfa,0x21,0x3d,0x7f,0x9f,0x4d,0x51,0x58), websocket.build_frame {
FIN = true;
MASK = true;
key = {0x37,0xfa,0x21,0x3d};
opcode = 0x1;
data = "Hello";
})
end)
it("build_frame validates opcode", function()
assert.has.errors(function()
websocket.build_frame { opcode = -1; }
end)
assert.has.errors(function()
websocket.build_frame { opcode = 16; }
end)
end)
it("build_frame validates data length", function()
assert.has.errors(function()
websocket.build_frame {
opcode = 0x8;
data = ("f"):rep(200);
}
end)
end)
it("build_close works for common case", function()
assert.same({
opcode = 0x8;
FIN = true;
MASK = false;
data = "\3\232";
}, websocket.build_close(1000, nil, false))
assert.same({
opcode = 0x8;
FIN = true;
MASK = false;
data = "\3\232error";
}, websocket.build_close(1000, "error", false))
end)
it("build_close validates string length", function()
assert.has.errors(function() websocket.build_close(1000, ("f"):rep(200), false) end)
end)
it("build_close can generate frames without a code", function()
assert.same({
opcode = 0x8;
FIN = true;
MASK = false;
data = "";
}, websocket.build_close(nil, nil, false))
end)
it("parse_close works", function()
assert.same({nil, nil}, {websocket.parse_close ""})
assert.same({1000, nil}, {websocket.parse_close "\3\232"})
assert.same({1000, "error"}, {websocket.parse_close "\3\232error"})
end)
end)
describe("http.websocket", function()
local websocket = require "http.websocket"
it("__tostring works", function()
local ws = websocket.new_from_uri("wss://example.com")
assert.same("http.websocket{", tostring(ws):match("^.-%{"))
end)
it("close on a new websocket doesn't throw an error", function()
local ws = websocket.new_from_uri("wss://example.com")
ws:close() -- this shouldn't throw
end)
describe("new_from_stream", function()
local ca = require "cqueues.auxlib"
local cs = require "cqueues.socket"
local ce = require "cqueues.errno"
local h1_connection = require "http.h1_connection"
local http_headers = require "http.headers"
local function new_connection_pair(version)
local s, c = ca.assert(cs.pair())
s = h1_connection.new(s, "server", version)
c = h1_connection.new(c, "client", version)
return s, c
end
local correct_headers = http_headers.new()
correct_headers:append(":method", "GET")
correct_headers:append(":scheme", "http")
correct_headers:append(":authority", "example.com")
correct_headers:append(":path", "/")
correct_headers:append("upgrade", "websocket")
correct_headers:append("connection", "upgrade")
correct_headers:append("sec-websocket-key", "foo", true)
correct_headers:append("sec-websocket-version", "13")
it("works with correct parameters", function()
local s, c = new_connection_pair(1.1)
local c_stream = c:new_stream()
c_stream:write_headers(correct_headers, false)
local s_stream = assert(s:get_next_incoming_stream(TEST_TIMEOUT))
local s_headers = assert(s_stream:get_headers(TEST_TIMEOUT))
local ws = assert(websocket.new_from_stream(s_stream, s_headers))
s:close()
ws:close()
end)
it("rejects client streams", function()
local s, c = new_connection_pair(1.1)
local c_stream = c:new_stream()
assert.has.errors(function() websocket.new_from_stream(c_stream, correct_headers) end)
s:close()
c:close()
end)
it("rejects non-1.0 connections", function()
local s, c = new_connection_pair(1.0)
local c_stream = c:new_stream()
c_stream:write_headers(correct_headers, false)
local s_stream = assert(s:get_next_incoming_stream(TEST_TIMEOUT))
local s_headers = assert(s_stream:get_headers(TEST_TIMEOUT))
assert.same({nil, "upgrade headers MUST be ignored in HTTP 1.0", ce.EINVAL}, {websocket.new_from_stream(s_stream, s_headers)})
s:close()
c:close()
end)
local function test_invalid_headers(test_name, cb, err)
it(test_name, function()
local s, c = new_connection_pair(1.1)
local c_stream = c:new_stream()
local headers = correct_headers:clone()
cb(headers)
c_stream:write_headers(headers, false)
local s_stream = assert(s:get_next_incoming_stream(TEST_TIMEOUT))
local s_headers = assert(s_stream:get_headers(TEST_TIMEOUT))
assert.same({nil, err, ce.EINVAL}, {websocket.new_from_stream(s_stream, s_headers)})
s:close()
c:close()
end)
end
test_invalid_headers("rejects missing upgrade header", function(headers)
headers:delete("upgrade")
end, "upgrade header not websocket")
test_invalid_headers("rejects non-websocket upgrade header", function(headers)
headers:upsert("upgrade", "notwebsocket")
end, "upgrade header not websocket")
test_invalid_headers("rejects missing connection header", function(headers)
headers:delete("connection")
end, "connection header doesn't contain upgrade")
test_invalid_headers("rejects upgrade missing from connection header", function(headers)
headers:upsert("connection", "other")
end, "connection header doesn't contain upgrade")
test_invalid_headers("rejects missing Sec-Websocket-Key header", function(headers)
headers:delete("sec-websocket-key")
end, "missing sec-websocket-key")
test_invalid_headers("rejects missing Sec-Websocket-Version header", function(headers)
headers:delete("sec-websocket-version")
end, "unsupported sec-websocket-version")
test_invalid_headers("rejects unknown Sec-Websocket-Version header", function(headers)
headers:upsert("sec-websocket-version", "123456")
end, "unsupported sec-websocket-version")
test_invalid_headers("rejects invalid Sec-Websocket-Protocol header", function(headers)
headers:upsert("sec-websocket-protocol", "invalid@protocol")
end, "invalid sec-websocket-protocol header")
test_invalid_headers("rejects duplicate Sec-Websocket-Protocol", function(headers)
headers:upsert("sec-websocket-protocol", "foo, foo")
end, "duplicate protocol")
end)
end)
describe("http.websocket module two sided tests", function()
local onerror = require "http.connection_common".onerror
local server = require "http.server"
local util = require "http.util"
local websocket = require "http.websocket"
local cqueues = require "cqueues"
local ca = require "cqueues.auxlib"
local ce = require "cqueues.errno"
local cs = require "cqueues.socket"
local function new_pair()
local s, c = ca.assert(cs.pair())
s:onerror(onerror)
c:onerror(onerror)
local ws_server = websocket.new("server")
ws_server.socket = s
ws_server.readyState = 1
local ws_client = websocket.new("client")
ws_client.socket = c
ws_client.readyState = 1
return ws_client, ws_server
end
it("works with a socketpair", function()
local cq = cqueues.new()
local c, s = new_pair()
cq:wrap(function()
assert(c:send("hello"))
assert.same("world", c:receive())
assert(c:close())
end)
cq:wrap(function()
assert.same("hello", s:receive())
assert(s:send("world"))
assert(s:close())
end)
assert_loop(cq, TEST_TIMEOUT)
assert.truthy(cq:empty())
end)
it("timeouts return nil, err, errno", function()
local cq = cqueues.new()
local c, s = new_pair()
local ok, _, errno = c:receive(0)
assert.same(nil, ok)
assert.same(ce.ETIMEDOUT, errno)
-- Check it still works afterwards
cq:wrap(function()
assert(c:send("hello"))
assert.same("world", c:receive())
assert(c:close())
end)
cq:wrap(function()
assert.same("hello", s:receive())
assert(s:send("world"))
assert(s:close())
end)
assert_loop(cq, TEST_TIMEOUT)
assert.truthy(cq:empty())
end)
it("doesn't fail when data contains a \\r\\n", function()
local cq = cqueues.new()
local c, s = new_pair()
cq:wrap(function()
assert(c:send("hel\r\nlo"))
assert.same("wor\r\nld", c:receive())
assert(c:close())
end)
cq:wrap(function()
assert.same("hel\r\nlo", s:receive())
assert(s:send("wor\r\nld"))
assert(s:close())
end)
assert_loop(cq, TEST_TIMEOUT)
assert.truthy(cq:empty())
end)
local function send_receive_test(name, data, data_type)
it(name, function()
data_type = data_type or "text"
local cq = cqueues.new()
local c, s = new_pair()
cq:wrap(function()
assert(c:send(data, data_type))
assert.same({data, data_type}, {assert(c:receive())})
assert(c:close())
end)
cq:wrap(function()
assert.same({data, data_type}, {assert(s:receive())})
assert(s:send(data, data_type))
assert(s:close())
end)
assert_loop(cq, TEST_TIMEOUT)
assert.truthy(cq:empty())
end)
end
send_receive_test("works with small size frames", "f")
send_receive_test("works with medium size frames", ("f"):rep(200))
send_receive_test("works with large size frames", ("f"):rep(100000))
send_receive_test("works with binary frames", "\0\1\127\255", "binary")
it("fails when text isn't valid utf8", function()
local cq = cqueues.new()
local c, s = new_pair()
cq:wrap(function()
assert(c:send("\230", "text"))
local ok, _, errno = c:receive()
assert.same(nil, ok)
assert.same(1007, errno)
assert(c:close())
end)
cq:wrap(function()
local ok, _, errno = s:receive()
assert.same(nil, ok)
assert.same(1007, errno)
assert(s:close())
end)
assert_loop(cq, TEST_TIMEOUT)
assert.truthy(cq:empty())
end)
it("fails when text isn't valid utf8 (utf16 surrogates)", function()
local cq = cqueues.new()
local c, s = new_pair()
cq:wrap(function()
assert(c:send("\237\160\128", "text"))
local ok, _, errno = c:receive()
assert.same(nil, ok)
assert.same(1007, errno)
assert(c:close())
end)
cq:wrap(function()
local ok, _, errno = s:receive()
assert.same(nil, ok)
assert.same(1007, errno)
assert(s:close())
end)
assert_loop(cq, TEST_TIMEOUT)
assert.truthy(cq:empty())
end)
it("doesn't allow invalid utf8 in close messages", function()
local cq = cqueues.new()
local c, s = new_pair()
cq:wrap(function()
assert(c:close(1000, "\237\160\128"))
end)
cq:wrap(function()
local ok, _, errno = s:receive()
assert.same(nil, ok)
assert.same(1007, errno)
assert(s:close())
end)
assert_loop(cq, TEST_TIMEOUT)
assert.truthy(cq:empty())
end)
for _, flag in ipairs{"RSV1", "RSV2", "RSV3"} do
it("fails correctly on "..flag.." flag set", function()
local cq = cqueues.new()
local c, s = new_pair()
cq:wrap(function()
assert(c:send_frame({
opcode = 1;
[flag] = true;
}))
assert(c:close())
end)
cq:wrap(function()
local ok, _, errno = s:receive()
assert.same(nil, ok)
assert.same(1002, errno)
assert(s:close())
end)
assert_loop(cq, TEST_TIMEOUT)
assert.truthy(cq:empty())
end)
end
it("doesn't blow up when given pings", function()
local cq = cqueues.new()
local c, s = new_pair()
cq:wrap(function()
assert(c:send_ping())
assert(c:send("test"))
assert(c:close())
end)
cq:wrap(function()
assert.same("test", s:receive())
assert(s:close())
end)
assert_loop(cq, TEST_TIMEOUT)
assert.truthy(cq:empty())
end)
it("ignores unsolicited pongs", function()
local cq = cqueues.new()
local c, s = new_pair()
cq:wrap(function()
assert(c:send_pong())
assert(c:send("test"))
assert(c:close())
end)
cq:wrap(function()
assert.same("test", s:receive())
assert(s:close())
end)
assert_loop(cq, TEST_TIMEOUT)
assert.truthy(cq:empty())
end)
it("works when using uri string constructor", function()
local cq = cqueues.new()
local s = server.listen {
host = "localhost";
port = 0;
onstream = function(s, stream)
local headers = assert(stream:get_headers())
assert.same("http", headers:get(":scheme"))
local ws = websocket.new_from_stream(stream, headers)
assert(ws:accept())
assert(ws:close())
s:close()
end;
}
assert(s:listen())
local _, host, port = s:localname()
cq:wrap(function()
assert_loop(s)
end)
cq:wrap(function()
local ws = websocket.new_from_uri("ws://"..util.to_authority(host, port, "ws"));
assert(ws:connect())
assert(ws:close())
end)
assert_loop(cq, TEST_TIMEOUT)
assert.truthy(cq:empty())
end)
it("works when using uri table constructor and protocols", function()
local new_headers = require "http.headers".new
local cq = cqueues.new()
local s = server.listen {
host = "localhost";
port = 0;
onstream = function(s, stream)
local headers = assert(stream:get_headers())
local ws = websocket.new_from_stream(stream, headers)
local response_headers = new_headers()
response_headers:upsert(":status", "101")
response_headers:upsert("server", "lua-http websocket test")
assert(ws:accept {
headers = response_headers;
protocols = {"my awesome-protocol", "foo"};
})
-- Should prefer client protocol preference
assert.same("foo", ws.protocol)
assert(ws:close())
s:close()
end;
}
assert(s:listen())
local _, host, port = s:localname()
cq:wrap(function()
assert_loop(s)
end)
cq:wrap(function()
local ws = websocket.new_from_uri({
scheme = "ws";
host = host;
port = port;
}, {"foo", "my-awesome-protocol", "bar"})
assert(ws:connect())
assert.same("foo", ws.protocol)
assert.same("lua-http websocket test", ws.headers:get("server"))
assert(ws:close())
end)
assert_loop(cq, TEST_TIMEOUT)
assert.truthy(cq:empty())
end)
end)
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