espterm
/
espterm-firmware
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

martonmiklos: Add GZIP compression for static files

Browse Source
pull/30/head
Jeroen Domburg 9 years ago
parent 48a017c029
commit 3cb7b32678
4 changed files with 88 additions and 2 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Show Stats Download Patch File Download Diff File
  1. 29
      Makefile
  2. 46
      user/httpd.c
  3. 4
      user/httpd.h
  4. 11
      user/httpdespfs.c

29
Makefile
Unescape View File

@ -38,6 +38,20 @@ EXTRA_INCDIR = include \
# libraries used in this project, mainly provided by the SDK
LIBS = c gcc hal phy pp net80211 wpa main lwip
# If GZIP_COMPRESSION is set to "yes" then the static css, js, and html files will be compressed with gzip before added to the espfs image
# and will be served with gzip Content-Encoding header.
# This could speed up the downloading of these files, but might break compatibility with older web browsers not supporting gzip encoding
# because Accept-Encoding is simply ignored. Enable this option if you have large static files to serve (for e.g. JQuery, Twitter bootstrap)
# By default only js, css and html files are compressed.
# If you have text based static files with different extensions what you want to serve compressed then you will need to add the extension to the following places:
# - Add the extension to this Makefile at the webpages.espfs target to the find command
# - Add the extension to the gzippedFileTypes array in the user/httpd.c file
#
# Adding JPG or PNG files (and any other compressed formats) is not recommended, because GZIP compression does not works effectively on compressed files.
#Static gzipping is disabled by default.
#GZIP_COMPRESSION = "yes"
# compiler flags using during compilation of source files
CFLAGS = -Os -ggdb -std=c99 -Werror -Wpointer-arith -Wundef -Wall -Wl,-EL -fno-inline-functions \
-nostdlib -mlongcalls -mtext-section-literals -D__ets__ -DICACHE_FLASH \
@ -101,6 +115,10 @@ Q := @
vecho := @echo
endif
ifeq ($(GZIP_COMPRESSION),"yes")
CFLAGS += -DGZIP_COMPRESSION
endif
vpath %.c $(SRC_DIR)
define compile-objects
@ -144,8 +162,15 @@ flash: $(FW_FILE_1) $(FW_FILE_2)
$(Q) $(ESPTOOL) -cp $(ESPPORT) -cb $(ESPBAUD) -ca 0x40000 -cf firmware/0x40000.bin -v
webpages.espfs: html/ html/wifi/ mkespfsimage/mkespfsimage
cd html; find . | ../mkespfsimage/mkespfsimage > ../webpages.espfs; cd ..
ifeq ($(GZIP_COMPRESSION),"yes")
$(Q) rm -rf html_compressed;
$(Q) cp -r html html_compressed;
$(Q) cd html_compressed; find . -type f -regex ".*/.*\.\(html\|css\|js\)" -exec sh -c "gzip -n {}; mv {}.gz {}" \;; cd ..;
$(Q) cd html_compressed; find | ../mkespfsimage/mkespfsimage > ../webpages.espfs; cd ..;
$(Q) awk "BEGIN {printf \"GZIP compression ratio was: %.2f%%\\n\", (`du -b -s html_compressed/ | sed 's/\([0-9]*\).*/\1/'`/`du -b -s html/ | sed 's/\([0-9]*\).*/\1/'`)*100}"
else
$(Q) cd html; find | ../mkespfsimage/mkespfsimage > ../webpages.espfs; cd ..
endif
mkespfsimage/mkespfsimage: mkespfsimage/
make -C mkespfsimage

46
user/httpd.c
Unescape View File

@ -75,6 +75,19 @@ static const MimeMap mimeTypes[]={
{NULL, "text/html"}, //default value
};
// The static files with the following extensions from the HTML folder will be compressed and served with GZIP compression
// Add any other file types you want compressed here (and don't forget to modify the Makefile too)
#ifdef GZIP_COMPRESSION
static const char * gzippedFileTypes[] = {
"js",
"html",
"css",
NULL
};
static const char gzipNonSupportedMessage[] = "<html><head></head><body>Your browser does not accept gzip-compressed data.</body></html>";
#endif
//Returns a static char* to a mime type for a given url to a file.
const char ICACHE_FLASH_ATTR *httpdGetMimetype(char *url) {
int i=0;
@ -88,6 +101,39 @@ const char ICACHE_FLASH_ATTR *httpdGetMimetype(char *url) {
return mimeTypes[i].mimetype;
}
#ifdef GZIP_COMPRESSION
//Sends Content-encoding header if the requested file was GZIP compressed
//If the client does not sent the Accept-encoding, send out a static html message.
const char* sendGZIPEncodingIfNeeded(HttpdConnData *connData) {
int i=0;
char acceptEncodingBuffer[64];
//Go find the extension
char *ext=connData->url+(strlen(connData->url)-1);
while (ext!=connData->url && *ext!='.') ext--;
if (*ext=='.') ext++;
//ToDo: os_strcmp is case sensitive; we may want to do case-intensive matching here...
while (gzippedFileTypes[i]!=NULL) {
if (os_strcmp(ext, gzippedFileTypes[i])==0) {
//when serving gzipped files check the browser's "Accept-Encoding" header
//if the client does not advertises that he accepts GZIP send a warning message (telnet users for e.g.)
httpdGetHeader(connData, "Accept-Encoding", acceptEncodingBuffer, 64);
if (os_strstr(acceptEncodingBuffer, "gzip") == NULL) {
//No Accept-Encoding: gzip header present
return gzipNonSupportedMessage;
} else {
httpdHeader(connData, "Content-Encoding", "gzip");
return NULL;
}
}
i++;
}
return NULL;
}
#endif
//Looks up the connData info for a specific esp connection
static HttpdConnData ICACHE_FLASH_ATTR *httpdFindConnData(void *arg) {
int i;

4
user/httpd.h
Unescape View File

@ -14,6 +14,7 @@
#define HTTPD_METHOD_GET 1
#define HTTPD_METHOD_POST 2
typedef struct HttpdPriv HttpdPriv;
typedef struct HttpdConnData HttpdConnData;
typedef struct HttpdPostData HttpdPostData;
@ -58,6 +59,9 @@ int httpdUrlDecode(char *val, int valLen, char *ret, int retLen);
int ICACHE_FLASH_ATTR httpdFindArg(char *line, char *arg, char *buff, int buffLen);
void ICACHE_FLASH_ATTR httpdInit(HttpdBuiltInUrl *fixedUrls, int port);
const char *httpdGetMimetype(char *url);
#ifdef GZIP_COMPRESSION
const char* sendGZIPEncodingIfNeeded(HttpdConnData *connData);
#endif
void ICACHE_FLASH_ATTR httpdStartResponse(HttpdConnData *conn, int code);
void ICACHE_FLASH_ATTR httpdHeader(HttpdConnData *conn, const char *field, const char *val);
void ICACHE_FLASH_ATTR httpdEndHeaders(HttpdConnData *conn);

11
user/httpdespfs.c
Unescape View File

@ -31,6 +31,9 @@ int ICACHE_FLASH_ATTR cgiEspFsHook(HttpdConnData *connData) {
EspFsFile *file=connData->cgiData;
int len;
char buff[1024];
#ifdef GZIP_COMPRESSION
const char *gzipSendResult = NULL;
#endif
if (connData->conn==NULL) {
//Connection aborted. Clean up.
@ -47,6 +50,14 @@ int ICACHE_FLASH_ATTR cgiEspFsHook(HttpdConnData *connData) {
connData->cgiData=file;
httpdStartResponse(connData, 200);
httpdHeader(connData, "Content-Type", httpdGetMimetype(connData->url));
#ifdef GZIP_COMPRESSION
gzipSendResult = sendGZIPEncodingIfNeeded(connData);
if (gzipSendResult != NULL) {
httpdEndHeaders(connData);
httpdSend(connData, gzipSendResult, os_strlen(gzipSendResult));
return HTTPD_CGI_DONE;
}
#endif
httpdHeader(connData, "Cache-Control", "max-age=3600, must-revalidate");
httpdEndHeaders(connData);
return HTTPD_CGI_MORE;

Write Preview
Loading…
Cancel
Save