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[websocket]fix parse #718

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Merged
qicosmos merged 1 commit into from
Dec 2, 2025
Merged

[websocket]fix parse #718

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22 changes: 18 additions & 4 deletions include/cinatra/websocket.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -60,22 +60,36 @@ class websocket {
if (length_field <= 125) {
len_bytes_ = SHORT_HEADER;
payload_length_ = length_field;
left_header_len_ =
is_server ? SHORT_HEADER - size : CLIENT_SHORT_HEADER - size;
if (left_header_len_ > 0) {
// The frame length field or mask field was not received completely
return ws_header_status::incomplete;
}
}
else if (length_field == 126) // msglen is 16bit!
{
len_bytes_ = MEDIUM_HEADER;
payload_length_ = ntohs(*(uint16_t *)&inp[2]); // (inp[2] << 8) + inp[3];
pos += 2;
left_header_len_ =
is_server ? MEDIUM_HEADER - size : CLIENT_MEDIUM_HEADER - size;
if (left_header_len_ > 0) {
// The frame length field or mask field was not received completely
return ws_header_status::incomplete;
}
payload_length_ = ntohs(*(uint16_t *)&inp[2]); // (inp[2] << 8) + inp[3];
pos += 2;
}
else if (length_field == 127) // msglen is 64bit!
{
len_bytes_ = LONG_HEADER;
payload_length_ = (size_t)be64toh(*(uint64_t *)&inp[2]);
pos += 8;
left_header_len_ =
is_server ? LONG_HEADER - size : CLIENT_LONG_HEADER - size;
if (left_header_len_ > 0) {
// The frame length field or mask field was not received completely
return ws_header_status::incomplete;
}
payload_length_ = (size_t)be64toh(*(uint64_t *)&inp[2]);
pos += 8;
}
else {
len_bytes_ = INVALID_HEADER;
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