CL: STM32: Make LWIP optional

PUBLISHED_FROM=eebffe7800a74d7b69aafd95e476b2e90328be98

Can be used for cases where device has no networking but mongoose is still needed for its event loop.

CL: mg: Add net_if_null, a no-op net interface

PUBLISHED_FROM=e79b4a8667508bbde1437dda9dad77ce3a3aa630

 * Change return type of mg_mgr_poll to return number of events
 * Add mg_mgr_min_timer
 * Refactor main poll loop to remove LwIP-specific stuff

CL: Refactor mg polling

PUBLISHED_FROM=dc94618b32fa3c84a2f053bd04d134297780ec82

CL: Mongoose 6.12

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CL: Add mg_strstrip: trims whitespace at the ends of s

PUBLISHED_FROM=a7e10054ac25fa2b3a878876da93a6b30d9507b3

Use vararg macros for this.

PUBLISHED_FROM=735c40b79dedef17a1fdbb5b846e984df0ae7018

CL: Add missing CC3220 sub-header to mongoose.h

PUBLISHED_FROM=a143485b629109c6e16c66b035f02f7552f76129

CL: Fix TZ on ESP8266

PUBLISHED_FROM=435a501a8b52524bccb67bb5a8ae7e09dfb4d44a

mgos_dlsym needs to include mg_str for ffi_exports to be able to use it

PUBLISHED_FROM=a2dd167c8e8f9e9b7316a856f19a4603080c3632

Enables extra compile-time checks

CL: none

PUBLISHED_FROM=9f7d658fbda5c721cf40293bf29967bb056d0437

CL: Add `mg_url_encode_opt()` - a parametrized version of `mg_url_encode()`

PUBLISHED_FROM=17fa57a7a5325b51b6e3aef3855eac4e82c35782

PUBLISHED_FROM=8828792097bd19774472b8a2e61420565684d174

A major cleanup, disentangling net_if and ssl_if.
Pulled a lot of common logic into the core and reduced size of net_if implementations.

CL: Mongoose net_if and ssl_if refactoring

PUBLISHED_FROM=29bd4dcb264a1fd96b3dd164e2d880e1c2c0921e

 * Limit total amount of headroom, in absolute terms (`MBUF_SIZE_MAX_HEADROOM`).
 * If unable to allocate with headroom, fall back to allocating the required minimum.
 * For mOS, set default `MBUF_SIZE_MULTIPLIER` to 2 to avoid floating point operations.
   Since max headroom size is now capped to 128 bytes, this will not result in much of a bloat.

PUBLISHED_FROM=11d4fc65a46a805bb7c8960f89a3d0b753c58bb8

CL: Fix mg_socketpair for lwip + UDP

PUBLISHED_FROM=6dd09136b3837016026523fb34acb5cc893cadbe

PUBLISHED_FROM=92604e1b7c65009a6214fea9f1b2460df721d38e

Which is a replacement of (deprecated) `mg_http_parse_header`, but,
similarly to `asprintf`, allocates a new buffer if the client-provided
one is not large enough.

Also use it throughout mongoose code, and thus some header-related
limitations are removed; in particular,
https://github.com/cesanta/mongoose/issues/813 is fixed.

CL: Mongoose Web Server: Deprecate `mg_http_parse_header()` and implement `mg_http_parse_header2()` instead, which allocates a new buffer if the client-provided one is not large enough (similarly to `asprintf`).
CL: Mongoose Web Server: Fix limitations of header value lengths, e.g. when parsing authentication headers such as nonce, etc.

PUBLISHED_FROM=c75b1bbbbdb294ea85075ce69b1368f115fdd1ef

In certain files it was necessary to make tests work from public
mongoose repo, so this commit makes things consistent.

PUBLISHED_FROM=694454d0ff007229c65d524a2a2beaf126420f15

CL: none

PUBLISHED_FROM=d6ebe5fa88c61ae3b8569897d9b09d54610bec73

CL: Mongoose Web Server: Remove tunneling functionality which was used by nobody

PUBLISHED_FROM=38b9e8ae7b0a5a1dbba5cff4074843dc681267d3

CL: Mongoose Web Server: Digest authentication: Fix nonce validity check (expired nonce or nonce from the future did not cause the the check to fail)
CL: Mongoose Web Server: Digest authentication: Fix nonce request value; it worked before because nonce validity check was broken as well
CL: Mongoose Web Server: Digest authentication: Add `nonce` argument to `mg_http_create_digest_auth_header()`: clients should use the value received from the server's authentication request.

Resolves https://github.com/cesanta/mongoose/issues/809

PUBLISHED_FROM=5e59f90ed6b2a4311ed6763159da81c2aaf6af4c

CL: Mongoose Web Server: Websocket: Respond to Ping with Pong
CL: Mongoose Web Server: Websocket: Properly close a connection with Close frame (in response to a client's close and when protocol failure is detected)
CL: Mongoose Web Server: Websocket: Fix support of fragmented messages
CL: Mongoose Web Server: Websocket: Add support for control frames interjected in the middle of a fragmented message

PUBLISHED_FROM=e2b3794aaacc64633540c493194cccc62afa2077

Fixes https://github.com/cesanta/mjs/issues/82
Integrates https://github.com/cesanta/mjs/pull/85

PUBLISHED_FROM=2f5f50c25ec1c92fdfb783cd95cb57f0cb20642b

CL: Fix OOB access in mg_match_prefix_n().
    Made mg_match_prefix_n() return non-negative result.

PUBLISHED_FROM=611454df6a6c55bfa7ddf05e7d268a86fa0457a8

AWS MQTT connection works

Also fixes https://github.com/mongoose-os-libs/ethernet/issues/1 (because why not).

PUBLISHED_FROM=7b0fa8894f2127335d075f2a97fcd37b932006b2

Standardize common packages in build images, to make better use of Docker image cache.

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PUBLISHED_FROM=3b75fd8247ba9028e0ef0c3e211e7c1a80013951

PUBLISHED_FROM=2c176091ffb6c7c5cfe8ea4f05b6109e00b33383

PUBLISHED_FROM=1bfc6e332f56b68eb6155bb729a97a0d8d5a316c

To avoid name clashes.

PUBLISHED_FROM=e6ae32ec48f9b599eace7a9214a1863cdc185fd9

PUBLISHED_FROM=b85fe1ee1e7bae4528c1240d8531c410728d0709

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PUBLISHED_FROM=c61fa89018f8cef4f798e094acff8d36c72869f2

Must set SSL parameters before invoking sl_Listen

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