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#include "ConnectResponse.h" |
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#include "Error.h" |
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#include "utils.h" |
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#include |
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#include |
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7
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namespace panda { namespace protocol { namespace websocket { |
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9
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90
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void ConnectResponse::process_headers () { |
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90
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100
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if (code == 426) { |
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2
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50
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_ws_version = headers.get("Sec-WebSocket-Version"); |
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50
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12
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2
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error = errc::unsupported_version; |
13
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90
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return; |
14
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} |
15
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16
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88
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100
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if (code != 101) { |
17
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1
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error = errc::response_code_101; |
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1
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return; |
19
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} |
20
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21
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87
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50
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auto it = headers.find("Connection"); |
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261
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50
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if (it == headers.end() || !string_contains_ci(it->value, "upgrade")) { |
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50
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100
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50
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50
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100
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0
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0
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23
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1
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error = errc::connection_mustbe_upgrade; |
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1
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return; |
25
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} |
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27
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86
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50
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it = headers.find("Upgrade"); |
28
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258
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50
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if (it == headers.end() || !string_contains_ci(it->value, "websocket")) { |
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50
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100
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50
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50
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100
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0
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0
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29
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1
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error = errc::upgrade_mustbe_websocket; |
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1
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return; |
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} |
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33
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85
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50
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it = headers.find("Sec-WebSocket-Accept"); |
34
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255
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50
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if (it == headers.end() || it->value != _calc_accept_key(_ws_key)) { |
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50
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50
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50
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100
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50
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50
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50
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100
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0
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0
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0
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35
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1
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error = errc::sec_accept_missing; |
36
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1
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return; |
37
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} |
38
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84
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50
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else _ws_accept_key = it->value; |
39
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40
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41
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84
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50
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auto ext_range = headers.get_multi("Sec-WebSocket-Extensions"); |
42
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149
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50
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for (auto& val : ext_range) { |
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50
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50
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100
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50
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50
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43
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65
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50
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parse_header_value(val, _ws_extensions); |
44
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} |
45
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46
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84
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50
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ws_protocol = headers.get("Sec-WebSocket-Protocol"); |
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50
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47
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} |
48
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49
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313
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string ConnectResponse::_calc_accept_key (string ws_key) { |
50
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626
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50
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auto key_base = ws_key + "258EAFA5-E914-47DA-95CA-C5AB0DC85B11"; |
51
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unsigned char sha1bin[21]; |
52
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313
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50
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SHA1((const unsigned char*)key_base.data(), key_base.length(), sha1bin); |
53
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626
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50
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return panda::encode::encode_base64(string_view((const char*)sha1bin, 20), false, true); |
54
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} |
55
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56
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228
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string ConnectResponse::to_string() { |
57
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228
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code = 101; |
58
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228
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message = "Switching Protocols"; |
59
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228
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50
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headers.add("Upgrade", "websocket"); |
60
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228
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50
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headers.add("Connection", "Upgrade"); |
61
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62
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228
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100
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if (ws_protocol) headers.add("Sec-WebSocket-Protocol", ws_protocol); |
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50
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63
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64
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228
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50
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headers.add("Sec-WebSocket-Accept", _calc_accept_key(_ws_key)); |
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50
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65
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228
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50
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if (!headers.has("Server")) headers.add("Server", "Panda-WebSocket"); |
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50
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50
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66
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67
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228
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100
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if (_ws_extensions.size()) headers.add("Sec-WebSocket-Extensions", compile_header_value(_ws_extensions)); |
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50
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68
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69
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228
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body.parts.clear(); // body not supported in WS responses |
70
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71
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228
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return http::Response::to_string(); |
72
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} |
73
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74
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}}} |