static FskErr KprWebSocketServerRequestDoRead(FskThreadDataHandler handler UNUSED, FskThreadDataSource source UNUSED, void *refCon)
{
FskErr err = kFskErrNone;
KprWebSocketServerRequest self = refCon;
int size = -1;
char buffer[kHeaderBufferSize];
while (err == kFskErrNone) {
err = FskNetSocketRecvTCP(self->skt, buffer, kHeaderBufferSize, &size);
if (err == kFskErrNoData) return kFskErrNone;
FskHeadersParseChunk(buffer, size, kFskHeaderTypeRequest, self->requestHeaders);
if (self->requestHeaders->headersParsed) {
KprWebSocketServerHandleRequest(self);
KprWebSocketServerRequestDispose(self);
break;
}
}
return err;
}
static void httpServerEngineCycle(void *param) {
FskErr err = kFskErrNone, retVal = kFskErrNeedMoreTime;
FskHTTPServerRequest request = (FskHTTPServerRequest)param;
int amt, ret, chunkSize = 0;
UInt32 chunkSizeL;
char *s, *p;
Boolean readSomeMore, needsDispose = false;
FskThreadRemoveDataHandler(&request->dataHandler);
switch (request->state) {
case kHTTPNewSession:
FskInstrumentedItemSendMessage(request, kFskHTTPInstrMsgRequestState, request);
FskTimeGetNow(&request->stats.requestStarted);
request->state = kHTTPReadRequestHeaders;
case kHTTPReadRequestHeaders:
FskInstrumentedItemSendMessage(request, kFskHTTPInstrMsgRequestState, request);
shoveBuffer(request->in);
amt = request->in.bufferSize - request->in.max;
if (amt) {
err = FskNetSocketRecvTCP(request->skt, &request->in.buf[request->in.max], amt, &ret);
switch (err) {
case kFskErrNone:
#if SUPPORT_INSTRUMENTATION
if (FskInstrumentedItemHasListeners(request)) {
FskHTTPInstrMsgDataRecord msg;
msg.buffer = &request->in.buf[request->in.max];
msg.amt = ret;
FskInstrumentedItemSendMessage(request, kFskHTTPInstrMsgRequestRecvData, &msg);
}
#endif
request->http->stats.requestsStarted += 1;
request->in.max += ret;
request->state = kHTTPProcessRequestHeaders;
request->stats.bytesReceived += ret;
request->http->stats.bytesReceived += ret;
break;
case kFskErrNoData:
retVal = kFskErrNoData;
break;
case kFskErrConnectionClosed:
if (request->stats.bytesReceived) {
request->state = kHTTPSocketError;
}
else {
request->state = kHTTPDone;
}
break;
default:
FskInstrumentedItemSendMessage(request, kFskHTTPInstrMsgErrString, "kHTTPReadRequestHeaders: RecvTCP - error");
request->state = kHTTPSocketError;
break;
}
}
else
request->state = kHTTPProcessRequestHeaders;
if (request->state != kHTTPProcessRequestHeaders)
break;
case kHTTPProcessRequestHeaders:
FskInstrumentedItemSendMessage(request, kFskHTTPInstrMsgRequestState, request);
amt = request->in.max - request->in.pos;
if (amt) {
ret = FskHeadersParseChunk(&request->in.buf[request->in.pos], amt, kFskHeaderTypeRequest, request->requestHeaders);
if (ret < 0) {
err = kFskErrBadData;
request->state = kHTTPSocketError;
break;
}
request->in.pos += ret;
if (request->requestHeaders->headersParsed) {
httpProcessRequestHeaders(request);
}
else if (ret != amt) {
// odd case - we didn't consume all the data, but
// the header parsing isn't complete.
request->state = kHTTPServerError;
}
}
else
request->state = kHTTPReadRequestHeaders;
if (request->state != kHTTPReadRequestBody)
break;
case kHTTPReadRequestBody:
FskInstrumentedItemSendMessage(request, kFskHTTPInstrMsgRequestState, request);
readSomeMore = false;
amt = request->in.max - request->in.pos;
if (request->requestBodyContentLength > 0) {
if (amt) {
request->state = kHTTPProcessRequestBody;
}
else {
request->in.max = 0;
request->in.pos = 0;
readSomeMore = true;
}
}
else if (request->requestBodyChunked) { // chunked
if (amt == 0) {
readSomeMore = true;
}
else {
p = &request->in.buf[request->in.pos];
while ((amt > 1) && lineEnd(p)) {
// consume line-ends
amt -= 2;
request->in.pos += 2;
p += 2;
}
while ((amt > 1) && !lineEnd(p)) {
// scan for chunk size
amt--;
p++;
}
if ((amt > 1) && lineEnd(p)) {
// convert the chunksize
s = &request->in.buf[request->in.pos];
chunkSize = FskStrHexToNum(s, p-s);
p += 2; //lineend
request->requestBodyContentLength = chunkSize;
request->in.pos += (p-s);
request->state = kHTTPReadRequestBody;
if (0 == chunkSize) {
// we've read the end indicator (0)
if ((amt > 1) && lineEnd(p))
request->in.pos += 2; // consume last cr/lf }
request->requestBodyChunked = false;
}
}
else {
readSomeMore = true;
}
}
}
else {
// we're done reading chunks
// we're done reading the request
request->state = kHTTPPrepareResponse;
doCallCondition(request->http->callbacks->requestCondition, request, kFskHTTPConditionRequestRequestFinished, request->refCon);
}
if (readSomeMore) {
shoveBuffer(request->in);
err = FskNetSocketRecvTCP(request->skt, &request->in.buf[request->in.max], request->in.bufferSize - request->in.max, &ret);
switch (err) {
case kFskErrNone:
#if SUPPORT_INSTRUMENTATION
if (FskInstrumentedItemHasListeners(request)) {
FskHTTPInstrMsgDataRecord msg;
msg.buffer = &request->in.buf[request->in.max];
msg.amt = ret;
FskInstrumentedItemSendMessage(request, kFskHTTPInstrMsgRequestRecvData, &msg);
}
#endif
request->in.max += ret;
if (request->requestBodyChunked) // chunked?
request->state = kHTTPReadRequestBody;
else
request->state = kHTTPProcessRequestBody;
request->stats.bytesReceived += ret;
request->http->stats.bytesReceived += ret;
break;
case kFskErrNoData:
retVal = kFskErrNoData;
break;
default:
FskInstrumentedItemSendMessage(request, kFskHTTPInstrMsgErrString, "kHTTPReadRequestBody: RecvTCP - error");
request->http->stats.requestsFailed += 1;
request->state = kHTTPSocketError;
break;
}
}
if (request->state != kHTTPProcessRequestBody)
break;
case kHTTPProcessRequestBody:
FskInstrumentedItemSendMessage(request, kFskHTTPInstrMsgRequestState, request);
amt = request->in.max - request->in.pos;
if (amt > request->requestBodyContentLength) {
if (false == request->requestBodyChunked)
request->requestBodyContentLength = amt;
else
amt = request->requestBodyContentLength;
}
chunkSizeL = (UInt32)chunkSize;
err = doDataCallback(request->http->callbacks->requestReceiveRequest, request, &request->in.buf[request->in.pos], amt, &chunkSizeL, request->refCon);
chunkSize = (int)chunkSizeL;
if (kFskErrNone == err) {
if (chunkSize) {
request->in.pos += chunkSize;
request->requestBodyContentLength -= chunkSize;
request->stats.requestBodyReceived += chunkSize;
if (false == request->requestBodyChunked) {
if (0 == request->requestBodyContentLength)
request->state = kHTTPPrepareResponse;
else
request->state = kHTTPReadRequestBody;
}
else
request->state = kHTTPReadRequestBody;
}
else {
// data callback wants to suspend the session and not
// consume the chunk, it can do so
if (request->state != kHTTPSessionSuspend)
request->state = kHTTPServerError;
}
}
else {
// the data callback returned an error.
if (request->state != kHTTPSessionSuspend)
request->state = kHTTPServerError;
}
if (request->state != kHTTPPrepareResponse)
break;
doCallCondition(request->http->callbacks->requestCondition, request, kFskHTTPConditionRequestRequestFinished, request->refCon);
if (request->state != kHTTPPrepareResponse)
break;
case kHTTPPrepareResponse:
FskInstrumentedItemSendMessage(request, kFskHTTPInstrMsgRequestState, request);
request->state = kHTTPProcessResponse;
err = doCallCondition(request->http->callbacks->requestCondition, request, kFskHTTPConditionRequestGenerateResponseHeaders, request->refCon);
if (err == kFskErrNeedMoreTime)
request->state = kHTTPSessionSuspend;
else if (err)
request->responseHeaders->responseCode = 500;
if (request->state != kHTTPProcessResponse)
break;
case kHTTPProcessResponse:
request->state = kHTTPGetDataChunk;
httpPrepareResponseHeaders(request);
if (request->state != kHTTPGetDataChunk)
break;
case kHTTPGetDataChunk:
FskInstrumentedItemSendMessage(request, kFskHTTPInstrMsgRequestState, request);
if (0 == FskStrCompare(kFskStrHEAD, FskHeaderMethod(request->requestHeaders))) {
request->state = kHTTPSendDataChunk;
request->nextState = kHTTPSetupNextRequest;
break;
}
p = &request->out.buf[request->out.max];
if (request->transferEncoding == kFskTransferEncodingChunked) {
request->out.max += 6;
}
chunkSize = 0;
amt = (request->out.bufferSize - request->out.max) - 2;
// fetch response data from callback
chunkSizeL = (UInt32)chunkSize;
err = doDataCallback(request->http->callbacks->requestGenerateResponseBody, request, &request->out.buf[request->out.max], amt, &chunkSizeL, request->refCon);
chunkSize = (int)chunkSizeL;
FskInstrumentedTypePrintfDebug(&gFskHTTPServerTypeInstrumentation, "doDataCallback returns err: %d, chunkSize: %d\n", err, chunkSize);
if ((kFskErrNone != err) && (kFskErrEndOfFile != err)) {
FskInstrumentedTypePrintfDebug(&gFskHTTPServerTypeInstrumentation, "about to doCallCondition -requestResponseFinished - FAIL\n");
doCallCondition(request->http->callbacks->requestCondition, request, kFskHTTPConditionRequestResponseFinished, request->refCon);
request->http->stats.requestsFailed += 1;
request->state = kHTTPServerError;
break;
}
request->out.max += chunkSize;
if ((0 == chunkSize) && (request->state == kHTTPSessionSuspend)) {
if (kFskTransferEncodingChunked == request->transferEncoding)
request->out.max -= 6;
break;
}
request->state = kHTTPSendDataChunk;
if ((chunkSize == 0) || (kFskErrEndOfFile == err)) {
request->nextState = kHTTPSetupNextRequest;
}
else
request->nextState = kHTTPGetDataChunk;
if (request->transferEncoding == kFskTransferEncodingChunked) {
FskStrNumToHex(chunkSize, p, 4);
p += 4;
*p++ = kFskCR;
*p++ = kFskLF;
if (chunkSize)
p += chunkSize;
*p++ = kFskCR;
*p++ = kFskLF;
request->out.max += 2;
}
request->stats.bodyBytesSent += chunkSize;
if (request->state != kHTTPSendDataChunk)
break;
case kHTTPSendDataChunk:
FskInstrumentedItemSendMessage(request, kFskHTTPInstrMsgRequestState, request);
FskInstrumentedTypePrintfDebug(&gFskHTTPServerTypeInstrumentation, " - request->out.max %d - request->out.pos %d\n", request->out.max, request->out.pos);
amt = request->out.max - request->out.pos;
if (0 == amt) {
FskInstrumentedTypePrintfDebug(&gFskHTTPServerTypeInstrumentation, "amt is zero now - transition to next state.\n");
request->state = request->nextState;
break;
}
err = FskNetSocketSendTCP(request->skt, &request->out.buf[request->out.pos], amt, &ret);
switch (err) {
case kFskErrNone:
#if SUPPORT_INSTRUMENTATION
if (FskInstrumentedItemHasListeners(request)) {
FskHTTPInstrMsgDataRecord msg;
msg.buffer = &request->out.buf[request->out.pos];
msg.amt = ret;
FskInstrumentedItemSendMessage(request, kFskHTTPInstrMsgRequestSendData, &msg);
}
#endif
request->out.pos += ret;
request->stats.bytesSent += ret;
request->http->stats.bytesSent += ret;
if (request->transferEncoding == kFskTransferEncodingChunked) {
request->stats.bytesSent -= 8;
}
if (request->out.pos == request->out.max) {
request->out.pos = 0;
request->out.max = 0;
request->state = request->nextState;
}
break;
case kFskErrNoData:
retVal = kFskErrSocketFull;
break;
default:
FskInstrumentedItemSendMessage(request, kFskHTTPInstrMsgErrString, "kHTTPSendDataChunk: SendTCP - error");
request->state = kHTTPSocketError;
request->http->stats.requestsFailed += 1;
break;
}
if (request->state != kHTTPSetupNextRequest)
break;
case kHTTPSetupNextRequest:
FskInstrumentedItemSendMessage(request, kFskHTTPInstrMsgRequestState, request);
FskTimeGetNow(&request->stats.requestStopped);
request->http->stats.requestsFinished += 1;
doCallCondition(request->http->callbacks->requestCondition, request, kFskHTTPConditionRequestResponseFinished, request->refCon);
request->state = kHTTPDone;
if (request->keepAlive && !request->http->stopped) {
if ((request->in.max - request->in.pos) > 0) {
FskHeaderStructDispose(request->requestHeaders);
FskHeaderStructDispose(request->responseHeaders);
FskHeaderStructNew(&request->requestHeaders);
FskHeaderStructNew(&request->responseHeaders);
request->keepAlive = false;
request->out.max = 0;
request->out.pos = 0;
FskMemSet(&request->stats, 0, sizeof(request->stats));
FskTimeGetNow(&request->stats.requestStarted);
request->state = kHTTPProcessRequestHeaders;
}
}
if (request->state != kHTTPDone)
break;
case kHTTPDone:
FskInstrumentedItemSendMessage(request, kFskHTTPInstrMsgRequestState, request);
if (request->keepAlive && !request->http->stopped) {
FskHeaderStructDispose(request->requestHeaders);
FskHeaderStructDispose(request->responseHeaders);
FskHeaderStructNew(&request->requestHeaders);
FskHeaderStructNew(&request->responseHeaders);
request->keepAlive = false;
request->in.max = 0;
request->in.pos = 0;
request->out.max = 0;
request->out.pos = 0;
FskMemSet(&request->stats, 0, sizeof(request->stats));
retVal = kFskErrNoData; // will cause data handler to be installed
request->state = kHTTPNewSession;
}
else {
request->state = kHTTPClose;
retVal = kFskErrNeedMoreTime;
}
break;
case kHTTPFulfillExpectation:
FskInstrumentedItemSendMessage(request, kFskHTTPInstrMsgRequestState, request);
request->state = kHTTPSendDataChunk;
request->nextState = kHTTPReadRequestBody;
request->out.max += snprintf(request->out.buf, request->out.bufferSize, "%s %d %s\r\n\r\n", httpProtocolVersionString(request), 100, FskFindResponse(100));
break;
case kHTTPDenyExpectation:
FskInstrumentedItemSendMessage(request, kFskHTTPInstrMsgRequestState, request);
request->state = kHTTPSendDataChunk;
request->nextState = kHTTPDone;
request->out.max += snprintf(request->out.buf, request->out.bufferSize, "%s %d %s\r\n\r\n", httpProtocolVersionString(request), 417, FskFindResponse(417));
break;
case kHTTPServerError:
FskInstrumentedItemSendMessage(request, kFskHTTPInstrMsgRequestState, request);
request->state = kHTTPSocketError;
// fall through
case kHTTPSocketError:
FskInstrumentedItemSendMessage(request, kFskHTTPInstrMsgRequestState, request);
request->http->stats.connectionsAborted++;
doCallCondition(request->http->callbacks->requestCondition, request, kFskHTTPConditionRequestErrorAbort, request->refCon);
request->state = kHTTPClose;
// fall through
case kHTTPClose:
FskInstrumentedItemSendMessage(request, kFskHTTPInstrMsgRequestState, request);
request->state = kHTTPRequestComplete;
needsDispose = true;
break;
case kHTTPRequestComplete:
FskInstrumentedItemSendMessage(request, kFskHTTPInstrMsgRequestState, request);
retVal = kFskErrNone; // request is finished, don't call back
break;
case kHTTPSessionSuspend:
FskInstrumentedItemSendMessage(request, kFskHTTPInstrMsgRequestState, request);
retVal = kFskErrNone; // do nothing in suspend state
break;
default:
FskInstrumentedItemSendMessage(request, kFskHTTPInstrMsgRequestState, request);
request->state = kHTTPClose; // unknown state
break;
;
}
if ((request->state == kHTTPServerError)
|| (request->state == kHTTPSocketError)
|| (request->state == kHTTPDone)
|| (request->state == kHTTPClose))
retVal = kFskErrNeedMoreTime;
if (retVal == kFskErrNoData) {
FskThreadAddDataHandler(&request->dataHandler, (FskThreadDataSource)request->skt, httpServerDataHandler, true, false, request);
}
else if (retVal == kFskErrSocketFull) {
FskThreadAddDataHandler(&request->dataHandler, (FskThreadDataSource)request->skt, httpServerDataHandler, false, true, request);
}
else if (retVal == kFskErrNeedMoreTime) {
FskTimeCallbackScheduleNextRun(request->cycleCallback, httpServerTimeCycle, request);
}
else if (retVal == kFskErrNone) {
// nothing doin
}
else {
FskInstrumentedTypePrintfDebug(&gFskHTTPServerTypeInstrumentation, "httpCycle - weird retVal %d\n", retVal);
}
if (needsDispose) {
FskListRemove((FskList*)&request->http->activeRequests, request);
FskTimeCallbackDispose(request->keepAliveKillCallback);
request->keepAliveKillCallback = NULL;
if (kFskErrNone != doCallCondition(request->http->callbacks->requestCondition, request, kFskHTTPConditionConnectionTerminating, request->refCon))
FskHTTPServerRequestDispose(request);
}
else {
if ((retVal == kFskErrNeedMoreTime) || ((retVal != kFskErrNone) && request->keepAlive)) {
FskTimeCallbackScheduleFuture(request->keepAliveKillCallback, FskHTTPServerRequestGetKeepAliveTimeout(request), 0, httpKillKeepAlive, request);
}
}
}
