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joaquinelio merged 23 commits into from
Oct 30, 2020
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Fetch: Cross-Origin Requests #427

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e396038
se actualiza con la version en ingles
MaskeZen Oct 6, 2020
ca6607b
traduccion parcial
MaskeZen Oct 16, 2020
70ecc20
corss-origin-request articulo completo
MaskeZen Oct 19, 2020
ac12441
se agrega task y solution
MaskeZen Oct 21, 2020
576213a
Merge branch 'master' into cross-origin-requests
joaquinelio Oct 22, 2020
538975a
Update 5-network/05-fetch-crossorigin/article.md
MaskeZen Oct 23, 2020
f134240
Update 5-network/05-fetch-crossorigin/1-do-we-need-origin/solution.md
MaskeZen Oct 23, 2020
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Update 5-network/05-fetch-crossorigin/article.md
MaskeZen Oct 23, 2020
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Update Cross-Origin Request #427
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Update 5-network/05-fetch-crossorigin/article.md 
Co-authored-by: joaquinelio <joaquinelio@gmail.com>
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@MaskeZen @joaquinelio
MaskeZen and joaquinelio authored Oct 23, 2020
commit 15fe5de9411a374c63ee1ea0030ab4dc8e3aeca1
2 changes: 1 addition & 1 deletion 5-network/05-fetch-crossorigin/article.md
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Expand Up @@ -149,7 +149,7 @@ Tal como se puede ver, la cabecera `Origin` contiene exactamente el origen (prot
El servidor puede inspeccionar el origen `Origin` y, si esta de acuerdo en aceptar ese tipo de solicitudes, agrega una cabecera especial `Access-Control-Allow-Origin` a la respuesta. Esta cabecera debe contener el origen permitido (en nuestro caso `https://es.javascript.info`), o un asterisco `*`. En ese caso la respuesta es satisfactoria, de otro modo falla.

El navegador cumple el papel de mediador de confianza:
1. Se asegura de que el origen correcto es enviado cuando se trata de una solicitud de origen cruzado.
1. Ante una solicitud de origen cruzado, se asegura de que se envíe el origen correcto.
2. Chequea que la respuesta contenga la cabecera `Access-Control-Allow-Origin`, de ser así JavaScript tiene permitido acceder a la respuesta, de no ser así la solicitud falla con un error.

![](xhr-another-domain.svg)
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