EOLib WASM Demo

Encode Number

Value Size

Encoded bytes (hex)

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Negative values are only supported for 4-byte EO ints, in the range -2147483648 to -197815216.

Decode Number

Hex bytes (space-separated, 1–4)

Decoded value

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4-byte EO ints decode to a 32-bit bit pattern interpreted as int32_t. Values at or above 0x80000000 will display as negative.

EO Number Limits

Type	Bytes	Max Value	Constant
Char	1	252	EO_CHAR_MAX
Short	2	64,008	EO_SHORT_MAX
Three	3	16,194,276	EO_THREE_MAX
Int	4	4,097,152,080	EO_INT_MAX

Encode String

Plain text (ASCII / Windows-1252)

Encoded bytes (hex)

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Encoded as Latin-1 string

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Decode String

Encoded hex bytes (space-separated)

Decoded text

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UTF-8 → Windows-1252 Conversion

Characters with no CP1252 mapping are replaced with ?. Replaced characters are shown in red.

UTF-8 input

Converted string

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Hex bytes (CP1252)

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Encrypt / Decrypt Packet

Unencrypted bytes (hex)

Encrypted bytes (hex)

Swap multiple (6–12)

Server Verification Hash

During the INIT handshake the client must respond with hash(challenge).

Challenge value

Hash result

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Sequence Generator

Start value (0–243)

Step	Counter	Value (start+counter)

Init Handshake — Recover Start

Server sends s1, s2 during INIT. Formula: start = s1 × 7 + s2 − 13

s1 (0–252) s2 (0–252)

Recovered sequence start

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Ping Handshake — Recover Start

Server refreshes the sequence on PING. Formula: start = s1 − s2

s1 s2

Recovered sequence start

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Seed RNG (srand)

Seed the RNG. Use the same seed to reproduce a deterministic sequence. The original EO client seeded with (uint32_t)time(NULL) on startup.

Seed

Status

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Generate Random Number

Result

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Generate Random Number in Range

Min Max

Result

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Captured Packets

Packet Details

Name: —

Capture: —

Note: —

Expected bytes (hex)

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Properties

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Roundtrip (deserialize → serialize)

Serialized output bytes (hex)

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