On Fri, 2020-05-22 at 20:56 +0000, Bernd Eckenfels wrote: > Hello, > > the blocking code could use a different reader thread, but maybe that > would be too much overhead? (Having a single polling thread might > have a lower footprint but could create concurrency stress) > > The question is if the sync code could use available() after sending > some buffers (not only the header but enough to fill a send buffer, > say x*32kb? (configurable)). This might block but it also might catch > early answers/closes. >
Hi Bernd Using SocketInputStream#available() to test for an out of sequence response is actually an interesting idea. I will experiment with it in the coming days. Thank you! Oleg > Gruss > Bernd > -- > http://bernd.eckenfels.net > ________________________________ > Von: Oleg Kalnichevski <ol...@apache.org> > Gesendet: Friday, May 22, 2020 10:18:02 PM > An: HttpClient User Discussion <httpclient-users@hc.apache.org> > Betreff: Re: Server-side mid-air connection close on upload > > On Fri, 2020-05-22 at 19:25 +0200, Michael Osipov wrote: > > Hi folks, > > > > I believe that this is a wellknown limitation in blocking I/O, but > > would > > like to know how to solve/workaround this issue. The source > > discussion > > is here [1]. > > > > Bascially, I am posting a large file (~7 MB) to Tomcat 8.5.54 where > > the > > resource needs to be authenticated: > > > > > 69 [main] DEBUG > > > org.apache.hc.client5.http.impl.classic.InternalHttpClient - ex- > > > 00000001: preparing request execution > > > 145 [main] DEBUG > > > org.apache.hc.client5.http.protocol.RequestAddCookies - Cookie > > > spec > > > selected: strict > > > 150 [main] DEBUG > > > org.apache.hc.client5.http.protocol.RequestAuthCache - Auth cache > > > not set in the context > > > 150 [main] DEBUG > > > org.apache.hc.client5.http.impl.classic.ProtocolExec - ex- > > > 00000001: > > > target auth state: UNCHALLENGED > > > 151 [main] DEBUG > > > org.apache.hc.client5.http.impl.classic.ProtocolExec - ex- > > > 00000001: > > > proxy auth state: UNCHALLENGED > > > 151 [main] DEBUG > > > org.apache.hc.client5.http.impl.classic.ConnectExec - ex- > > > 00000001: > > > acquiring connection with route {s}->https://<hostname>:11111 > > > 151 [main] DEBUG > > > org.apache.hc.client5.http.impl.classic.InternalHttpClient - ex- > > > 00000001: acquiring endpoint (3 MINUTES) > > > 152 [main] DEBUG > > > org.apache.hc.client5.http.impl.io.PoolingHttpClientConnectionMan > > > ag > > > er - ex-00000001: endpoint lease request (3 MINUTES) [route: {s}- > > > > > > > https://<hostname>:11111][total available: 0; route allocated: 0 > > > of > > > 5; total allocated: 0 of 25] > > > 175 [main] DEBUG > > > org.apache.hc.client5.http.impl.io.PoolingHttpClientConnectionMan > > > ag > > > er - ex-00000001: endpoint leased [route: {s}-> > > > https://<hostname>:11111][total available: 0; route allocated: 1 > > > of > > > 5; total allocated: 1 of 25] > > > 183 [main] DEBUG > > > org.apache.hc.client5.http.impl.io.PoolingHttpClientConnectionMan > > > ag > > > er - ex-00000001: acquired ep-00000000 > > > 183 [main] DEBUG > > > org.apache.hc.client5.http.impl.classic.InternalHttpClient - ex- > > > 00000001: acquired endpoint ep-00000000 > > > 183 [main] DEBUG > > > org.apache.hc.client5.http.impl.classic.ConnectExec - ex- > > > 00000001: > > > opening connection {s}->https://<hostname>:11111 > > > 184 [main] DEBUG > > > org.apache.hc.client5.http.impl.classic.InternalHttpClient - ep- > > > 00000000: connecting endpoint (3 MINUTES) > > > 184 [main] DEBUG > > > org.apache.hc.client5.http.impl.io.PoolingHttpClientConnectionMan > > > ag > > > er - ep-00000000: connecting endpoint to https://<hostname>:11111 > > > (3 MINUTES) > > > 201 [main] DEBUG > > > org.apache.hc.client5.http.impl.io.DefaultHttpClientConnectionOpe > > > ra > > > tor - http-outgoing-0: connecting to <hostname>/<ip>:11111 > > > 201 [main] DEBUG > > > org.apache.hc.client5.http.ssl.SSLConnectionSocketFactory - > > > Connecting socket to <hostname>/<ip>:11111 with timeout 3 MINUTES > > > 237 [main] DEBUG > > > org.apache.hc.client5.http.ssl.SSLConnectionSocketFactory - > > > Enabled > > > protocols: [TLSv1.3, TLSv1.2] > > > 237 [main] DEBUG > > > org.apache.hc.client5.http.ssl.SSLConnectionSocketFactory - > > > Enabled > > > cipher suites:[TLS_AES_256_GCM_SHA384, TLS_AES_128_GCM_SHA256, > > > TLS_CHACHA20_POLY1305_SHA256, > > > TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384, > > > TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, > > > TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256, > > > TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384, > > > TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256, > > > TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256, > > > TLS_DHE_RSA_WITH_AES_256_GCM_SHA384, > > > TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256, > > > TLS_DHE_DSS_WITH_AES_256_GCM_SHA384, > > > TLS_DHE_RSA_WITH_AES_128_GCM_SHA256, > > > TLS_DHE_DSS_WITH_AES_128_GCM_SHA256, > > > TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384, > > > TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384, > > > TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256, > > > TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256, > > > TLS_DHE_RSA_WITH_AES_256_CBC_SHA256, > > > TLS_DHE_DSS_WITH_AES_256_CBC_SHA256, > > > TLS_DHE_RSA_WITH_AES_128_CBC_SHA256, > > > TLS_DHE_DSS_WITH_AES_128_CBC_SHA256, > > > TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384, > > > TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384, > > > TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256, > > > TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256, > > > TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384, > > > TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384, > > > TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256, > > > TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256, > > > TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, > > > TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA, > > > TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, > > > TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, > > > TLS_DHE_RSA_WITH_AES_256_CBC_SHA, > > > TLS_DHE_DSS_WITH_AES_256_CBC_SHA, > > > TLS_DHE_RSA_WITH_AES_128_CBC_SHA, > > > TLS_DHE_DSS_WITH_AES_128_CBC_SHA, > > > TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA, > > > TLS_ECDH_RSA_WITH_AES_256_CBC_SHA, > > > TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA, > > > TLS_ECDH_RSA_WITH_AES_128_CBC_SHA, > > > TLS_RSA_WITH_AES_256_GCM_SHA384, > > > TLS_RSA_WITH_AES_128_GCM_SHA256, TLS_RSA_WITH_AES_256_CBC_SHA256, > > > TLS_RSA_WITH_AES_128_CBC_SHA256, TLS_RSA_WITH_AES_256_CBC_SHA, > > > TLS_RSA_WITH_AES_128_CBC_SHA, TLS_EMPTY_RENEGOTIATION_INFO_SCSV] > > > 237 [main] DEBUG > > > org.apache.hc.client5.http.ssl.SSLConnectionSocketFactory - > > > Starting handshake > > > 431 [main] DEBUG > > > org.apache.hc.client5.http.ssl.SSLConnectionSocketFactory - > > > Secure > > > session established > > > 431 [main] DEBUG > > > org.apache.hc.client5.http.ssl.SSLConnectionSocketFactory > > > - negotiated protocol: TLSv1.3 > > > 431 [main] DEBUG > > > org.apache.hc.client5.http.ssl.SSLConnectionSocketFactory > > > - negotiated cipher suite: TLS_AES_256_GCM_SHA384 > > > 431 [main] DEBUG > > > org.apache.hc.client5.http.ssl.SSLConnectionSocketFactory - peer > > > principal: CN=<hostname>, OU=LDA DW, O=Siemens, C=DE > > > 431 [main] DEBUG > > > org.apache.hc.client5.http.ssl.SSLConnectionSocketFactory - peer > > > alternative names: [<hostname>] > > > 431 [main] DEBUG > > > org.apache.hc.client5.http.ssl.SSLConnectionSocketFactory > > > - issuer > > > principal: CN=Siemens Issuing CA Intranet Server 2017, OU=Siemens > > > Trust Center, SERIALNUMBER=ZZZZZZB7, O=Siemens, L=Muenchen, > > > ST=Bayern, C=DE > > > 433 [main] DEBUG > > > org.apache.hc.client5.http.impl.io.DefaultHttpClientConnectionOpe > > > ra > > > tor - http-outgoing-0: connection established > > > 192.168.1.12:54367<- > > > > <ip>:11111 > > > > > > 433 [main] DEBUG > > > org.apache.hc.client5.http.impl.io.PoolingHttpClientConnectionMan > > > ag > > > er - ep-00000000: connected http-outgoing-0 > > > 433 [main] DEBUG > > > org.apache.hc.client5.http.impl.classic.InternalHttpClient - ep- > > > 00000000: endpoint connected > > > 434 [main] DEBUG > > > org.apache.hc.client5.http.impl.classic.MainClientExec - ex- > > > 00000001: executing POST /content-dev/api/documents HTTP/1.1 > > > 434 [main] DEBUG > > > org.apache.hc.client5.http.impl.io.DefaultManagedHttpClientConnec > > > ti > > > on - http-outgoing-0: set socket timeout to 100 MILLISECONDS > > > 434 [main] DEBUG > > > org.apache.hc.client5.http.impl.classic.InternalHttpClient - ep- > > > 00000000: start execution ex-00000001 > > > 434 [main] DEBUG > > > org.apache.hc.client5.http.impl.io.PoolingHttpClientConnectionMan > > > ag > > > er - ep-00000000: executing exchange ex-00000001 over http- > > > outgoing-0 > > > 435 [main] DEBUG org.apache.hc.client5.http.headers - http- > > > outgoing-0 >> POST /content-dev/api/documents HTTP/1.1 > > > 435 [main] DEBUG org.apache.hc.client5.http.headers - http- > > > outgoing-0 >> Accept-Encoding: gzip, x-gzip, deflate > > > 435 [main] DEBUG org.apache.hc.client5.http.headers - http- > > > outgoing-0 >> Content-Length: 7664149 > > > 435 [main] DEBUG org.apache.hc.client5.http.headers - http- > > > outgoing-0 >> Content-Type: application/zip > > > 435 [main] DEBUG org.apache.hc.client5.http.headers - http- > > > outgoing-0 >> Host: <hostname>:11111 > > > 435 [main] DEBUG org.apache.hc.client5.http.headers - http- > > > outgoing-0 >> Connection: keep-alive > > > 435 [main] DEBUG org.apache.hc.client5.http.headers - http- > > > outgoing-0 >> User-Agent: Apache-HttpClient/5.0 (Java/13.0.2) > > > 578 [main] DEBUG org.apache.hc.client5.http.wire - http-outgoing- > > > 0 > > > > > "POST /content-dev/api/documents HTTP/1.1[\r][\n]" > > > > > > 578 [main] DEBUG org.apache.hc.client5.http.wire - http-outgoing- > > > 0 > > > > > "Accept-Encoding: gzip, x-gzip, deflate[\r][\n]" > > > > > > 578 [main] DEBUG org.apache.hc.client5.http.wire - http-outgoing- > > > 0 > > > > > "Content-Length: 7664149[\r][\n]" > > > > > > 578 [main] DEBUG org.apache.hc.client5.http.wire - http-outgoing- > > > 0 > > > > > "Content-Type: application/zip[\r][\n]" > > > > > > 578 [main] DEBUG org.apache.hc.client5.http.wire - http-outgoing- > > > 0 > > > > > "Host: <hostname>:11111[\r][\n]" > > > > > > 579 [main] DEBUG org.apache.hc.client5.http.wire - http-outgoing- > > > 0 > > > > > "Connection: keep-alive[\r][\n]" > > > > > > 579 [main] DEBUG org.apache.hc.client5.http.wire - http-outgoing- > > > 0 > > > > > "User-Agent: Apache-HttpClient/5.0 (Java/13.0.2)[\r][\n]" > > > > > > 579 [main] DEBUG org.apache.hc.client5.http.wire - http-outgoing- > > > 0 > > > > > "[\r][\n]" > > > > > > 580 [main] DEBUG org.apache.hc.client5.http.wire - http-outgoing- > > > 0 > > > > > > > > > > > "PK[0x3][0x4][0x14][0x0][0x0][0x0][0x0][0x0][0xffffffd3]~[0xfffff > > > fb > > > 3]P... > > > ... > > > 5861 [main] DEBUG org.apache.hc.client5.http.wire - http- > > > outgoing-0 > > > > > > > > > > > "[\r][0xffffffe0]t[0xffffffa1][0x1f][0xffffffb0][0xfffffffa][0xff > > > ff > > > ffa1]... > > > 5861 [main] DEBUG org.apache.hc.client5.http.wire - http- > > > outgoing-0 > > > > > "[write] I/O error: Connection or outbound has closed" > > > > > > 5862 [main] DEBUG > > > org.apache.hc.client5.http.impl.classic.InternalHttpClient - ep- > > > 00000000: endpoint closed > > > 5862 [main] DEBUG > > > org.apache.hc.client5.http.impl.classic.InternalHttpClient - ep- > > > 00000000: discarding endpoint > > > 5862 [main] DEBUG > > > org.apache.hc.client5.http.impl.io.PoolingHttpClientConnectionMan > > > ag > > > er - ep-00000000: releasing endpoint > > > 5862 [main] DEBUG > > > org.apache.hc.client5.http.impl.io.PoolingHttpClientConnectionMan > > > ag > > > er - ep-00000000: connection released [route: {s}-> > > > https://<hostname>:11111][total available: 0; route allocated: 0 > > > of > > > 5; total allocated: 0 of 25] > > > 5862 [main] DEBUG > > > org.apache.hc.client5.http.impl.io.PoolingHttpClientConnectionMan > > > ag > > > er - Shutdown connection pool GRACEFUL > > > 5862 [main] DEBUG > > > org.apache.hc.client5.http.impl.io.PoolingHttpClientConnectionMan > > > ag > > > er - Connection pool shut down > > > Exception in thread "main" javax.net.ssl.SSLException: Eine > > > bestehende Verbindung wurde softwaregesteuert > > > durch den Hostcomputer abgebrochen > > > at > > > java.base/sun.security.ssl.Alert.createSSLException(Alert.java:12 > > > 7) > > > at > > > java.base/sun.security.ssl.TransportContext.fatal(TransportContex > > > t. > > > java:324) > > > at > > > java.base/sun.security.ssl.TransportContext.fatal(TransportContex > > > t. > > > java:267) > > > at > > > java.base/sun.security.ssl.TransportContext.fatal(TransportContex > > > t. > > > java:262) > > > at > > > java.base/sun.security.ssl.SSLSocketImpl$AppOutputStream.write(SS > > > LS > > > ocketImpl.java:1258) > > > at > > > org.apache.hc.client5.http.impl.io.LoggingOutputStream.write(Logg > > > in > > > gOutputStream.java:72) > > > at > > > org.apache.hc.core5.http.impl.io.SessionOutputBufferImpl.flushBuf > > > fe > > > r(SessionOutputBufferImpl.java:117) > > > at > > > org.apache.hc.core5.http.impl.io.SessionOutputBufferImpl.write(Se > > > ss > > > ionOutputBufferImpl.java:150) > > > at > > > org.apache.hc.core5.http.impl.io.ContentLengthOutputStream.write( > > > Co > > > ntentLengthOutputStream.java:113) > > > at > > > org.apache.hc.core5.http.io.entity.AbstractHttpEntity.writeTo(Abs > > > tr > > > actHttpEntity.java:85) > > > at > > > org.apache.hc.core5.http.io.entity.AbstractHttpEntity.writeTo(Abs > > > tr > > > actHttpEntity.java:93) > > > at > > > org.apache.hc.core5.http.impl.io.DefaultBHttpClientConnection.sen > > > dR > > > equestEntity(DefaultBHttpClientConnection.java:153) > > > at > > > org.apache.hc.core5.http.impl.io.HttpRequestExecutor.execute(Http > > > Re > > > questExecutor.java:148) > > > at > > > org.apache.hc.core5.http.impl.io.HttpRequestExecutor.execute(Http > > > Re > > > questExecutor.java:225) > > > at > > > org.apache.hc.client5.http.impl.io.PoolingHttpClientConnectionMan > > > ag > > > er$InternalConnectionEndpoint.execute(PoolingHttpClientConnection > > > Ma > > > nager.java:596) > > > at > > > org.apache.hc.client5.http.impl.classic.InternalExecRuntime.execu > > > te > > > (InternalExecRuntime.java:220) > > > at > > > org.apache.hc.client5.http.impl.classic.MainClientExec.execute(Ma > > > in > > > ClientExec.java:107) > > > at > > > org.apache.hc.client5.http.impl.classic.ExecChainElement.execute( > > > Ex > > > ecChainElement.java:51) > > > at > > > org.apache.hc.client5.http.impl.classic.ExecChainElement$1.procee > > > d( > > > ExecChainElement.java:57) > > > at > > > org.apache.hc.client5.http.impl.classic.ConnectExec.execute(Conne > > > ct > > > Exec.java:181) > > > at > > > org.apache.hc.client5.http.impl.classic.ExecChainElement.execute( > > > Ex > > > ecChainElement.java:51) > > > at > > > org.apache.hc.client5.http.impl.classic.ExecChainElement$1.procee > > > d( > > > ExecChainElement.java:57) > > > at > > > org.apache.hc.client5.http.impl.classic.ProtocolExec.execute(Prot > > > oc > > > olExec.java:165) > > > at > > > org.apache.hc.client5.http.impl.classic.ExecChainElement.execute( > > > Ex > > > ecChainElement.java:51) > > > at > > > org.apache.hc.client5.http.impl.classic.ExecChainElement$1.procee > > > d( > > > ExecChainElement.java:57) > > > at > > > org.apache.hc.client5.http.impl.classic.HttpRequestRetryExec.exec > > > ut > > > e(HttpRequestRetryExec.java:93) > > > at > > > org.apache.hc.client5.http.impl.classic.ExecChainElement.execute( > > > Ex > > > ecChainElement.java:51) > > > at > > > org.apache.hc.client5.http.impl.classic.ExecChainElement$1.procee > > > d( > > > ExecChainElement.java:57) > > > at > > > org.apache.hc.client5.http.impl.classic.RedirectExec.execute(Redi > > > re > > > ctExec.java:116) > > > at > > > org.apache.hc.client5.http.impl.classic.ExecChainElement.execute( > > > Ex > > > ecChainElement.java:51) > > > at > > > org.apache.hc.client5.http.impl.classic.ExecChainElement$1.procee > > > d( > > > ExecChainElement.java:57) > > > at > > > org.apache.hc.client5.http.impl.classic.ContentCompressionExec.ex > > > ec > > > ute(ContentCompressionExec.java:128) > > > at > > > org.apache.hc.client5.http.impl.classic.ExecChainElement.execute( > > > Ex > > > ecChainElement.java:51) > > > at > > > org.apache.hc.client5.http.impl.classic.InternalHttpClient.doExec > > > ut > > > e(InternalHttpClient.java:178) > > > at > > > org.apache.hc.client5.http.impl.classic.CloseableHttpClient.execu > > > te > > > (CloseableHttpClient.java:75) > > > at > > > org.apache.hc.client5.http.impl.classic.CloseableHttpClient.execu > > > te > > > (CloseableHttpClient.java:89) > > > at sspijava.SspiAuth.main(SspiAuth.java:59) > > > Suppressed: java.net.SocketException: Eine bestehende > > > Verbindung wurde softwaregesteuert > > > durch den Hostcomputer abgebrochen > > > at > > > java.base/sun.nio.ch.NioSocketImpl.implWrite(NioSocketImpl.java:4 > > > 21 > > > ) > > > at > > > java.base/sun.nio.ch.NioSocketImpl.write(NioSocketImpl.java:441) > > > at > > > java.base/sun.nio.ch.NioSocketImpl$2.write(NioSocketImpl.java:825 > > > ) > > > at > > > java.base/java.net.Socket$SocketOutputStream.write(Socket.java:10 > > > 07 > > > ) > > > at > > > java.base/sun.security.ssl.SSLSocketOutputRecord.encodeAlert(SSLS > > > oc > > > ketOutputRecord.java:82) > > > at > > > java.base/sun.security.ssl.TransportContext.fatal(TransportContex > > > t. > > > java:355) > > > ... 35 more > > > Suppressed: java.net.SocketException: Connection or outbound > > > has closed > > > at > > > java.base/sun.security.ssl.SSLSocketImpl$AppOutputStream.write(SS > > > LS > > > ocketImpl.java:1246) > > > at > > > org.apache.hc.client5.http.impl.io.LoggingOutputStream.write(Logg > > > in > > > gOutputStream.java:72) > > > at > > > org.apache.hc.core5.http.impl.io.SessionOutputBufferImpl.flushBuf > > > fe > > > r(SessionOutputBufferImpl.java:117) > > > at > > > org.apache.hc.core5.http.impl.io.SessionOutputBufferImpl.flush(Se > > > ss > > > ionOutputBufferImpl.java:126) > > > at > > > org.apache.hc.core5.http.impl.io.ContentLengthOutputStream.close( > > > Co > > > ntentLengthOutputStream.java:93) > > > at > > > org.apache.hc.core5.http.impl.io.DefaultBHttpClientConnection.sen > > > dR > > > equestEntity(DefaultBHttpClientConnection.java:154) > > > ... 25 more > > > Caused by: java.net.SocketException: Eine bestehende Verbindung > > > wurde softwaregesteuert > > > durch den Hostcomputer abgebrochen > > > at > > > java.base/sun.nio.ch.NioSocketImpl.implWrite(NioSocketImpl.java:4 > > > 21 > > > ) > > > at > > > java.base/sun.nio.ch.NioSocketImpl.write(NioSocketImpl.java:441) > > > at > > > java.base/sun.nio.ch.NioSocketImpl$2.write(NioSocketImpl.java:825 > > > ) > > > at > > > java.base/java.net.Socket$SocketOutputStream.write(Socket.java:10 > > > 07 > > > ) > > > at > > > java.base/sun.security.ssl.SSLSocketOutputRecord.deliver(SSLSocke > > > tO > > > utputRecord.java:342) > > > at > > > java.base/sun.security.ssl.SSLSocketImpl$AppOutputStream.write(SS > > > LS > > > ocketImpl.java:1253) > > > ... 32 more > > > > So what happens here, HttpClient uploads the file while Tomcat > > pretty > > quick notices that the requests needs to be authenticated, responds > > 401 > > and closes the connection. > > Is my understanding correct? What do I have to do to solve this? > > curl seems to handle this properly, aborts the request and retries > > with > > proper credentials. > > > > The key difference I see in Tomcats logs is that headers are seen > > first > > first, authnz checks, then curl sends the body while HttpClient > > sends > > headers and the first block of the payload. I can provide the trace > > output from Tomcat. > > > > Regards, > > > > Michael > > > > PS: Yes, I know I can use Expect, but I am trying to reproduce this > > for > > a failure with mod_proxy_http and py-requests. > > > > Hi Micheal > > I think your analysis is quite accurate. HttpClient indeed tries to > pack the request body into the same IP frame as the header for > performance reasons. It also does not stop and check for any out of > sequence response from the server due to high cost of such operation. > The only way to properly solve the problem is to enable `expect- > continue` handshake or use an async version of HttpClient. > > Theoretically we could enhance the classic client-side protocol > handler > to check if the length of the request entity is known and is greater, > say, than 1MB, send the request head first, stop and wait for an > early > response, but this could potentially kill performance of entity > enclosing requests processed in proper request-response sequence. > This > approach has been considered on several occasions but always decided > against. > > Oleg > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: httpclient-users-unsubscr...@hc.apache.org > For additional commands, e-mail: httpclient-users-h...@hc.apache.org > --------------------------------------------------------------------- To unsubscribe, e-mail: httpclient-users-unsubscr...@hc.apache.org For additional commands, e-mail: httpclient-users-h...@hc.apache.org
